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  • $70 hourly
    Highly creative and experienced product designer. Medical devices, consumer products, and military/avionics. Specialize in battery operated embedded systems that include sensors, displays, wireless, and human interfaces. Expertise in rf design, analog, signal conditioning, power supplies, battery management and wireless. My years of consulting experience lead to accurate project estimates and on time delivery of a functional design.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Core Bluetooth
    PCB Design
    Antenna Design
    Digital Electronics
    Embedded C
    Embedded System
  • $65 hourly
    My job is to design functional and tested circuits and PCBs for your application or consult you, so you can do that your self. Just give me requirements for your circuit: the price for bill of materials, deadline and a list of required features. After prototype of device is designed I almost always advise I will order a few sample PCBs for testing. After testing and debugging is completed, I will ship them to you, so you can verify my testing results. This costs a bit extra for you, but you are buying 100% working circuit design which needs no testing. Just take it and use it in your project. If you want to know how a circuit works I can develop complete math model of the circuit. This approach is way more accurate than SPICE simulation and allows you to understand how the circuit operates. I have completed at least one project having fallowing sub circuits: Analog: Low noise, low speed front-ends (from Hz to 100KHz): Photodiode, strain gauge, pressure sensitive resistors, magnetic angle sensors, tensile, thermocouples and other. High order active filters Voltage measurement (uV to kV) Current measurement (pA to tens of A) Resistance measurements (mOhm to Mohm) Frequency measurement (below GHz) Current output Oscillators (Bubba, Pierce, Hartley, phase shift, relaxation, crystal, RC) Integrated RF transmitters/receivers Digital: PCIe USB HDMI I2S SPI High speed parallel interfaces Logic circuits (TTL, CMOS) SOCs Power: DC/DC converters: Buck, Boost, SEPIC, full bridge, Cuk, Linear AC/DC converters (up to 1.8kW) Brushless and brushed motor drivers TEC drivers CAD packages: DipTrace KiCad Altium I have fallowing equipment: 1x Osciloscope RTB2004 4 channel 10 bit 300MHz with logic analyzer having 16 differential channels up to 600Mbps. 1x Oscilloscope HMO1002 2 channel 8 bit 50MHz. 1x Multimeter HMC8012 5,75digit 1x Electronic load IT8616 1.8kVA 420VAC 20AC (60A peak) or 600VDC 20ADC with AC signal analysis 1x Electronic load IT8512C 120VDC 60ADC 1x Signal generator Rohde and Schwarz AFG 20MHz 1x TP3020 30V 20A linear power supply 1x HY5003-2 dual channel 50V 3A linear power supply 2x PeakTech 6080A 15V 3A power supply 1x VP-2000VA - 2kVA 230VAC to 120VAC converter. 1x DER-EE DE-5000 RLC meter I also have programmer for: Texas Instruments CC series, Texas Instruments MSP430 programmer, Microchip ICD3/PicKit2/AVR ISP USBasp, Segger ARM programmer, SiliconLabs 8051 core programmer
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Electronic Circuit Design
    Power Electronics
    KiCad
    Altium Designer
    Assembly Language
    C
    Automotive Engineering
    PCB Design
    Circuit Design
    Digital Electronics
    Microcontroller Design
    Amplifiers & Filters
    Microcontroller Programming
  • $35 hourly
    My skills and experiences are Antenna, Low Noise Amplifiers, Active and reconfigurable Antenna, RF and Microwave sensors, Analog design, simulation (CST STUDIO SUITE commercial license), prototyping and testing in professional lab environment. In particular, antenna for mobile devices, smart antennas, electrically small antennas, beam forming, beam steering, real-time location system, tracking, IoT, RFID, NFC, LoRa, WiFi, BLE, radar, 5G, wireless Ethernet etc, high speed pcb design, Signal Integrity, EMC. I provide support and consulting, ranging from concept formulation and design, through to prototyping, testing, FCC/CE/KC certification, measuring and troubleshooting. I hold full access to standard electronics lab equipped with: network and spectrum analyzer, EMI test equipment, anechoic chamber, PCB manufacturing and SMT assembling tools etc. Apart from that, I also provide assistance and support with the writing of reports, extended essays, dissertations, theses, and scientific publications; from formulating the proposal and the working hypothesis (research outline) to proofreading and editing.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Wireless Communication
    RF Design
    RF Microwave Design
    Scientific Writing
    Physics
    Amplifiers & Filters
    Hardware Prototyping
    RFID
    Circuit Design
    Electronic Design
    Electronics
    Antenna Design
  • $35 hourly
    Hello! My name is Manh, professional hardware engineer My job is design hardware circuit, test circuit, program for electronic product and program software on PC to manage/communicate with circuit boards. Just give me your requirements/product specification. Then we can discuss about the deadline, price and other features. I have more than 7 years experience in design hardware for IoT Products, Consumer Products and Telecom Products. So I think i can try my best to complete your project with best result Below is my work flow in hardware design: - Receive your requirements, discuss to have final product/circuit specs - Design block diagram for circuit: need to very detail, it will decide what part will be used in project - Design schematics: follow block diagram to design schematic for product - Design PCB Layout: with requirement about Mechanical Design and Industrial Design, i will do the PCB Layout the fit with your MD that archive best performance - Extract production data: BOM, CAD, GERBER, DESIGN, ASSEMBLY GUIDELINE, IMPEDANCE CONTROL REQUIREMENTS, ... Something about my experience: - About microcontroller: STM32F0/F1/F2/F4/F7, MSP430, MSP432, ATMEGA, ATSAM, PIC, ... - About SoC and MPU: RK3399, Allwinner A10, RTS3902L/RTS3902, RTL8188/8192, ... - About dev board: Arduino, RPi, Teensy, ... - About Wireless MCU: ESP8266, ESP32, CC2530, CC2538, DA14580/14583, CC2540/41, nRF51822/nRF52840, CC1310, ... - About Sensor: CMOS Image Sensor, light sensor, CO, Smoke Sensor, Dust Sensor, Air Sensor, pH sensor, .... - About wireless communication: WiFi, BLE4.0/4.1/4.0, Lora, Zigbee, Sub1GHz, ... - About GPRS/3G/LTE Module: SIM800C/H, SIM900A, SIM908, SIM5320, SIM5360, Quectel MC60/M95/UC15/UC20/EC20, Sierra HL8548, SIM7600E. - About highspeed PCB Design: DDR3/DDR4, SATA, HDMI, USB2.0/3.0/TypeC, eMMC, ... - About Mass Production: I can help you prepare production data that help you do the mass production. I also have experience in mass production process for IP Camera and Home Gateway with very big quantity, so i will know how to design for manufacturing with your product, design mass production process, etc Some of my product that I have designed and released to the market: - Home IP Camera: using SoC with DDR3-RAM, livestream via Ethernet and WiFi, have light sensor, IR-Led Array, IR Cut control, CMOS Image Sensor, Flash, USB and MicroSD Card - Smart Home Product: Design Home Gateway with Ethernet, WiFi, Zigbee and TFT LCD, ... Design Smart Switch with capacitive touch, Zigbee communication, Single Phase Power Meter, 220VAC/110VAC load control, ... - Tablet board: using RK3399 SoC, DDR3, eMMC, NAND Flash, Touch Screen, LTE Module, Printer driver, ... - Smart Water Meter: With BLE, WiFi, MCU from TI, LCD 7 Segment - Tracking Device: Using 3G with GPS, this device is used for personal tracking ... and a lot of other products ... I hope to work with you, to help you complete your project and release your product to the market
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Multilayer PCB
    Antenna Design
    Arduino
    LoRa
    Altium Designer
    STM32
    Eagle
    PCB Design
    Hardware Design
    RF Microwave Design
    Electronic Design
    Microcontroller Programming
    Embedded System
    Circuit Design
    Electrical Engineering
    Microcontroller Design
    Electronics
  • $135 hourly
    Electronic Engineer - I Help You Bring Practical & Profitable Solutions To Market I’ll help you take your idea... to a schematic, to a PCB, then integrate software, take it to production, debug, document the process and get it out the door onto the market on time and under budget. I’m your go-to guy when you need technical skills to transform big ideas into tangible real-world practical and profitable solutions. • Need layouts and/or schematics verified? • Want enclosure design or retrofit electronics? • Seeking firmware design/development involving micro-controllers. Call Kevin. Who am I? I dig aerospace, rockets and airplanes. • I’m quick to absorb, understand and build on the information you give me. • When I see a problem, I step in to help solve it. And step away if I’m not required. • I’m trustworthy & honest, easy-going and love solving tough engineering problems. Who am I looking to work with? I want to help great start-ups bring great ideas to life and impact society positively. Honestly, I couldn’t think of anything more satisfying than being part of a project that makes life better for hundreds, thousands or even millions of people and contributing to the world in a positive way through engineering. What I do is a real passion for me, not just a job. And because I understand that the most important investment you can ever make in your business (besides product development) is in the team you build. I would greatly welcome the opportunity to be part of your project. I started my career as a technician and worked my way up to engineer. I have a rare combination of skills, knowledge & experience, and I know what it takes to make your project successful. I am 100% dedicated to my craft and I love to win. Let me help you win. ________________________________________ Experience: I use Altium Designer for all schematic and PCB needs. Worked on designs from simple 2 layer designs to complex 18 layer designs with high-density mixed signal designs from DC to 32GHz. This includes high-density DDR designs. Worked with Bluetooth, WIFI, IoT, PCIe. SPI / I2C / I2S / RS-232 / RS-422 / RS-485 Analog Design ( DAC / ADC / Op-Amp ) FPGA - Aritx / Kintex / UltraScale / Spartan Mechanical: Solidworks for enclosure design and retrofitting electronics Injection Molding Firmware: Microchip/Atmel 8 bit, 16 bit, 32 bit microcontrollers STM32 with LCD GUI interfaces FPGA design with VHDL with Xilinx or Altera Software: Altium MPLABX STM32CubeIDE / STM32CubeMX / TouchGFX Python and C/C++ LabWindows SystemVue ADS Solidworks Projects: IoT for Marine application (Particle System used) PEMF (Pulsed Electromagnetic Field Therapy) Consumer Product with touch screen GUI Ultra-Compact Audio Debug Tool for Audio Engineers 12ch 50Gbps PRBS generator 64Gbps PRBS/Pattern generator 60Gbps Error Detector 1-32GHz Synthesizer 1-18GHz Spectrum Analyzer 6GHz VSWR PoE Analyzer 18 layer HDI Motherboard with high-speed HDI layout Rigid Flex PCB 6GHz VSWR PoE IoT 10GHz Antenna Array Batteries / BMS controllers When you need a freelance staff engineer to help you get a project over the line on time. Call your reliable & trustworthy freelance software engineer Kevin Regan. See video below. Search LinkedIn Profile: Kevin Regan
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Electronics
    Altium Designer
    PCB Design
    VHDL
    Circuit Design
    Electronic Design
    Digital Electronics
    Analog Circuit
    C
    Microcontroller Programming
    Python
    Embedded System
  • $68 hourly
    My education includes a M.S. in Electrical Engineering and a B.S. in Electrical Engineering with a minor in Physics from the Milwaukee School of Engineering. I have experience in a wide variety of electrical engineering disciplines including power electronics, analog circuit design, embedded systems and signal processing. My primary fields of study in my Master’s program were power electronics design/analysis, electronic circuit design/analysis and digital signal processing. One example of a previous job function was at DRS-Power and Control Technologies. The project I worked on was the redesign of all power conversion and distribution systems for the next-generation Navy Nuclear Submarine (Ohio Replacement Program). After 1.5 years at this this position, I lead major start-to-finish designs on five separate, interdisciplinary circuit board designs. These designs required heavy design efforts with power and digital embedded systems including microprocessor, DSP, FPGA and GPP architectures.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Electrical Engineering
    Hardware Design
    Engineering Simulation
    Power Electronics
    Layout Design
    Integrated Circuit
    Circuit Design
    Algorithms
    Digital Electronics
    Digital Signal Processing
    Embedded System
  • $39 hourly
    Electrical/Electronics design engineer with 5+ years of experience. Control systems design expert with an emphasis on novel product design. Arduino, ESP32 and Raspberry Pi master. Microprocessor professional. PCB/circuit design, schematics, in-person testing, circuit simulation and more offered today: 🎛 Control Systems Design Expertise 💰 Bill of Materials (buy list with sources included) 💻 PCB Design (manufacturing/production sources included) 🧰 In-Person Hardware Testing 👨‍💻 Coding (tested, modular, scalable) (C/C++, Python, Assembly)🖥️ Circuit Simulation 🎛 Control Systems 🏽 Microprocessors ⌨️ Arduino 💻 RaspberryPi 🕸 IoT 🔌 Power Systems 📡 WiFi ☀️ Solar Power 🔋 Batteries 🌐 Ethernet 📱 Cell (3/4/5G) 👨‍💻 C/C++/Python/Assembly 🧪 Multisim, Teststand, MATLAB, Simulink, and more I specialize in control/embedded systems design and have designed boards for industrial electrostatic disinfectant sprayers, pick and place machines, solar powered fish farms, universal phone chargers, guitar pedal effects, electric vehicle charging, 40 ton industrial chicken fryers and much more. My backgrounds include industrial manufacturing, university research laboratories, and consumer product design. I focus on small to medium control systems and PCB design. I like to work with microprocessors, microcontrollers and microcomputers to design logic systems for people who have novel ideas and need an electronics expert's know how. I'm all about working with large or small businesses to help make the product of your dreams. 🏢 Corporations🚀 Start Ups 🏭 Industrial 🔬 Uni Research 🎨 Hobby 🎓 Electrical/Electronics I'm an electronics engineer with a degree from the University of Georgia and over 5 years of experience. My embedded systems journey began under Dr. Haidekker modeling power microgrid structures intended to solve rolling blackout problems. I helped design, test and write firmware for four PCBs we researched and later published a research journal on our findings. I have industrial manufacturing experience with an electrostatic disinfectant sprayer manufacturing company ByoPlanet. I designed data collection systems and autonomous tests for R&D and control systems for product safety testing. During my time at ByoPlanet, I improved test stand parameter precisions by 120%, decreased test stand operation time by 1000% and designed a control board for a handheld consumer disinfectant sprayer produced in conjunction with Clorox. My PLC experience began with MP Equipment, a food service industrial manufacturer. During my time there I increased precision of both versions of batter mixers by 20%, redesigned the control cabinet for a 40 ton fryer, and created modular electrical schematics for multi million dollar machines. I also worked for Niverplast, a Dutch packaging machine manufacturer to design and install packaging manufacturing lines. 📨 Constant Communication 🗓 Setting/Meeting Deadlines 🔍 Attention to Detail 🌎 24/7 Availability 💸 Budget Friendly 📚 In-Depth Research and Planning I aim to satisfy all clients by providing clear communication, realistic deadlines and a great attitude. Message me with any questions! I aim to keep my response time quick.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    PLC Programming
    Electrical Design
    Consumer Electronics
    Altium Designer
    Research & Development
    Automation
    ESP32
    Microcontroller Programming
    Python
    PCB Design
    Raspberry Pi
    Embedded System
    Arduino
    C++
  • $35 hourly
    Skilled RF engineer with over 7 years of experience in designing, testing, and troubleshooting RF & Antennas systems. - Designed passive Radar System -PET Locator - Designed RF circuits and systems for various applications using simulation tools like ADS, and CST. - Designed and optimized antennas for various applications including S-Band Systems, L-Band Systems, LoRa Module on 915 MHz, 2.4 GHz wireless Systems - Designed and tested PCB layouts for RF circuits and systems. - Debugged RF issues in lab and field environments and provided solutions to improve performance. - Collaborated with cross-functional teams including hardware engineers, software engineers, and product managers to deliver high-quality products on schedule. - Conducted feasibility studies, simulations, and prototype testing to validate new product concepts. - Developed test plans and procedures to ensure products meet performance and regulatory requirements. - Provided technical support to customers and resolved product-related issues. Skills : - RF System Design - Antenna Design - PCB Design : High Speed PCB Design, RF PCB Design - RF Debugging : VNA, Spectrum Analyzer, Oscilloscope - Simulation Tools : Matlab, ADS, CST - Design Tools : Altium - Wireless Communication Systems : LoRa Systems, WIFI systems, Telemetry Systems, Radar Systems, GPS/GNSS - Cross-functional Collaboration - Test Plan Development - Technical Support Delivered Products : - Power Divider/Combiner : L-Band, S-Band - S-Band Receiver Channel : that consist of : LNA, BPF, Digital Step Attenuator, power detector, High Power Limiter - L- Band Receiver Channel : that consist of : LNA, BPF, Mixer, Log Amp - Patch Antenna Design : Conformal antenna, 2x2 antenna on freq 8 GHz, - Dipole Antenna Design : 3 GHz Antenna Design. - Waveguide Antenna Design - and various design that meet client needs Sometimes do Consultation for RF Circuit, Antennas, RF Things
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Antenna Testing
    Circuit Design
    C
    Xilinx
    Verilog
    Electronic Design
    RF Microwave Design
    Antenna Measurement
    Altium Designer
    Multilayer PCB
    Antenna Design
    FPGA
    RF Design
    PCB Design
  • $300 hourly
    Versatile engineer focused on electronics and product design, with strong emphasis on high-complexity printed circuit board designs with a focus on design for manufacturability. I design, build, program, and test prototypes with in-house tools. I have served a wide variety of industries and have developed initial concepts and prototype devices as well as producing products that go into full scale production manufacturing. Extensive design experience on Altium Designer, including detailed layout incorporating 3D CAD models. Certified IPC Designer Council PCB Designer (CID). Whether it's taking an existing Arduino / Raspberry Pi prototype and turning it into a manufacturable product, or developing a brand new product from the early concept stage, I enjoy providing you with technical solutions that are suitably engineered for your needs. I am a graduate of the California Institute of Technology (Caltech), with a B.S. in Engineering and Applied Sciences. I am located in the Pasadena / Los Angeles-area. I am a U.S. Citizen and am available for travel domestically and internationally. Key offerings: • System analysis and design, including key technical and market considerations for success • Electronics design and printed circuit board (PCB) layout with Altium Designer • Mechanical CAD work to supplement the electronics, including sheet metal work • Develop bare-metal firmware and embedded-OS software • Build and test prototypes • Manage regulatory testing • Manage product manufacturing and logistics • Troubleshoot and fix failed devices and bad designs. • Assemble / repair prototype devices. I can use many formats of customer-supplied data from other electronics design software, and mechanical data from Solidworks and other standard CAD data formats. I have developed a wide variety of circuit boards, including: • Industry standard 4- and 2-layer boards with surface mount and through-hole components • Higher-complexity board (very high layer count, blind/buried vias, HDI) • High-speed / high-density boards with length-matching and tuning • Circuit boards with complex mechanical dimensional requirements • Flex and rigid-flex circuits with features on multiple work planes. • Products incorporating Bluetooth, BLE, WiFi, and serial interfaces (SPI, I2C, LIN, RS-232, RS-485) I design, assemble and test prototype electronics with in-house equipment. For volume production, I can arrange turn-key manufacturing for you. Partial list of equipment: • Prototype SMD assembly and rework tools • Othermill CNC PCB milling system • SMD Pick-and-place for short-run PCB assembly (over 3,000 CPH) • 3-axis CNC mill for enclosure / custom metal fabrication • Multiple 3D Printers • 4-Channel 500 MHz DSO, 500 Msps logic analyzer • Thermal imaging camera Please feel free to challenge me with your tough projects!
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    PCB Design
    Embedded System
    Electronics
    Prototype Design
    Compliance Testing
    Multilayer PCB
    Altium Designer
    Mechanical Design
    Digital Electronics
    Product Development
    Firmware
    Engineering Design
    Hardware Prototyping
    Electrical Engineering
  • $40 hourly
    Offering a complete electronic systems design and consultancy service. With small overheads I can impart a professional personal flexible service to deliver a quality reliable product at low design costs. An innovative, well-organised individual with an extensive background in electronic system design and product development. An effective, disciplined and reliable worker who has the ability to meet targets and objectives and has the persistence to achieve the highest standard in every undertaking My name is Dave Lelievre and I am an innovative, well-organised individual with an extensive background in electronic system design and product development. An effective, disciplined and reliable worker who has the ability to meet targets and objectives and has the persistence to achieve the highest standard in every undertaking. I have been an electronic design engineer for over 35 years after graduating in 1975 with a first class honours degree in Electrical and Electronic Engineering. I encompass the knowledge and resources to implement the following tasks in an innovative and imaginative way:- Digital Design including FPGA, high speed and microprocessor Analogue Design - Instrument, measurement and high voltage PCB Layout Product Specification and Reports EMC Compliance Consultancy Reverse Engineering - New replacement product with circuit diagram and parts list Test & Manufacture - Strong links with local companies to provide a full procurement, manufacture and test service. Software Development - Windows Visual Basic 6 and firmware in C Interface Design - Bluetooth, PCI, USB, RS232, RS485, I2C, SPI, VXI, VME Full System Design - Concept to fully tested and evaluated developed product
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Visual Basic
    C
    Amplifiers & Filters
    Microcontroller Design
    Circuit Design
    PIC Programming
    PCB Design
    PIC16
  • $125 hourly
    I have a BSEE with an emphasis in servo controls. I have 4 decades of experience in embedded software design / development / integration and test. Embedded Linux real-time applications, kernel driver development, front-end UI development. Hardware design capabilities and extensive experience in embedded real-time product development. Raspberry Pi, Arduino, esp32, RTD custom design hardware platforms. Prototype development and detailed design documentation capability, I am an excellent mechanical designer (Solidworks) and electrical designer as well as detailed mathematical modeling, simulation and analytical analysis.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Hardware Design
    KiCad
    ESP32
    Arduino
    Raspberry Pi
    Product Design
    Hardware Prototyping
    PCB Design
    SolidWorks
    Software Architecture & Design
    Firmware Programming
    Python
    C++
    Hardware Troubleshooting
    Embedded Linux
  • $25 hourly
    Big Dolphin Co., Ltd www.bigdolphin.com.vn Analog and digital circuit design. PCB design. Software and hardware development with MCU and FPGA: AVR MCU's, Microchip PIC MCU's, Altera KIT's, C/C++, Visual Basic, VHDL/Verilog HDL.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    OpenCV
    Computer Vision
    Eagle
    Image Processing
    PCB Design
    Integrated Circuit
    Electronic Design
    Digital Signal Processing
    Digital Electronics
    Circuit Design
    HTML
    Embedded System
    C++
    C
  • $50 hourly
    🌟 Welcome to my Profile! 🌟 👋 Looking for an experienced firmware developer and embedded systems expert to bring your project to life? Look no further! 🔥 Here's why you should consider working with me: 🌟 Client Satisfaction: 87% of my clients recommend my services, and 33% of them become long-term clients. I'm committed to delivering results that exceed your expectations. 🎓 Ph.D. in Radiophysics: With a Ph.D. in Radiophysics and over 20 years of experience, I bring a wealth of knowledge to the table. My expertise spans firmware development, embedded systems, microcontroller programming, and end-to-end project development. 🚀 Proven Track Record: I've successfully completed over 100 projects in diverse domains, including: Internet of Things (IoT) Embedded Electronics Development Machine Vision Smart Home Electronics Wearable Electronics Start-up electronics development (Kickstarter, Indiegogo) Apple HW development Sensors Development Radars Development PCB development, Mass Production 🔍 About Me: I remember the big round eyes of my dad when he saw me with a soldering iron in my little hands, attempting to fix Christmas lights. As I grew older, my passion for engineering only deepened. I hold a degree in Electrical Engineering, and my work revolves around electro-optics, RF/wireless, embedded systems, and harsh environment electronics. Technology is in my DNA, and I thrive on creating and innovating. 🛠️ My Lab: My workspace is a temple of technology, equipped with oscilloscopes, signal generators, power supplies, and various other tools. I'm not limited to specific tools and am open to using whatever is required for your project. I often embrace open-source or low-cost design tools to make high-quality devices accessible. ✅ Areas of Expertise: Embedded systems Analog circuits Digital circuits Low power & battery-operated devices Wireless designs Microcontroller (e.g., AVR, STM, MSP, TMS, etc.) DSP, SDR, RF, UHF design 📡 Microcontroller Experience: I have specific experience with microcontrollers from various manufacturers, including Atmel, Silabs, ST, Cypress, Xilinx, TI, Espressif Systems, and Nordic. 🤖 Embedded Platforms: I'm well-versed in working with platforms such as Raspberry Pi, Beagle Bone, Mediatek, Ratlink, Atheros, Paralela, Qualcomm Snapdragon, and Nvidia Tegra. 💻 Programming Languages: My coding skills include C/C++, Assembler, Python, VHDL, Java, OpenCV, C#, PHP, and JS. 🖥️ Operating Systems: I'm proficient in Embedded Linux, RTLinux, FreeRTOS, embOS, and QNX. 🌐 Standards and Technologies: I'm familiar with WiFi, Bluetooth, BLE, LoRa, OLED, LCD, TFT, Altium Designer for PCB development, inductive and capacitive sensor technologies, and ultra-low power electronics power harvesting. Ready to bring your project to life? Let's collaborate and turn your vision into reality! 🚀
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Firmware Programming
    Embedded C
    RFID
    Digital Signal Processing
    Machine Learning
    Embedded Linux
    Digital Electronics
    Embedded System
  • $60 hourly
    RF design engineer for IoT products. A lot of experience designing from concept to manufacturing. We also debug existing design issues with a specialty in RF TIS/TRP compliance issues. My team is also capable build embedded firmware for STM32xx series processors. Hardware Design - Complete IoT designs: Concept, schematics, pcb layout, component selection, and enclosure design) - Partial IoT designs: Antenna matching, Radio, Control, external Interfaces, and Sensor - MCU’s : STM32 and ESP - Wireless modules: Quectel, SIMCOM, Sierra Wireless, Telit, and u-blox - BLE: Nordic nRF5xxxx, STM32WB, and BlueNRG-2 - In-house Product Prototyping as well as preparing for 3rd party manufacturing - In-house RF equipment for pre- FCC, TIS/TRP emissions testing Software Design Programming Languages/ Technologies - Embedded Cortex M0, M3, M4 - FreeRTOS - Technical Documentation - Architecture Design - Change Management JIRA, SCRUM, git Programming Languages - Embedded C/C++ - C/C++/Win API/STL - embedded Linux - Operating systems: bare metal, FreeRTOS, Ubuntu, and Android PROTOCOLS /STANDARDS - TCP/IP - Modbus RTU - BLE 5.x - 3GPP 5G NR, LTE, UMTS, and GSM/GPRS - 3GPP MAC/RRC/NAS… - 802.xx - SSH - MQTT - SSL/TLS - HTTP/HTTPS - My SQL INTERFACES - I2C - UART - Ethernet - USB - SPI - GPIO - RS232/RS485 - One wire interface Development Tools - Eclipse - IAR for ARM 7.4/AVR 5.4 - Mobile network simulators, - Spectrum and Network Analyzers - Qualcomm QXDM - JTAG - ST-link
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Mobile Device
    WiFi
    Bluetooth
    ESP32
    Microcontroller Programming
    PCB Design
    RF Design
    Antenna Design
    Firmware Programming
    STM32
    Internet of Things
    Industrial Internet of Things
    Antenna Testing
    Antenna Measurement
  • $65 hourly
    "𝗘𝘃𝗲𝗿𝘆𝗼𝗻𝗲 𝗰𝗮𝗻 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗥𝗘𝗦𝗨𝗟𝗧𝗦 𝗯𝘂𝘁 𝗼𝗻𝗹𝘆 𝗮 𝗳𝗲𝘄 𝗰𝗮𝗻 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗦𝗔𝗧𝗜𝗦𝗙𝗔𝗖𝗧𝗜𝗢𝗡" 🔥 𝗧𝗼𝗽-𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 💪 𝗔𝗺𝗼𝗻𝗴 𝘁𝗵𝗲 𝘁𝗼𝗽 𝟯% 𝗼𝗳 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗲𝗿𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 |⭐𝟱 𝗦𝘁𝗮𝗿 𝗥𝗮𝘁𝗶𝗻𝗴 | 👍𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 |✔︎ 𝟯𝟱+ 𝗝𝗼𝗯𝘀 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲𝗱 | 💰𝗖𝗼𝘀𝘁 𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝕀 ℂ𝔸ℕ ℙℝ𝕆𝕍𝕀𝔻𝔼 𝕐𝕆𝕌 𝔽𝕆𝕃𝕃𝕆𝕎𝕀ℕ𝔾 𝔼ℕ𝔾𝕀ℕ𝔼𝔼ℝ𝕀ℕ𝔾 𝕊𝔼ℝ𝕍𝕀ℂ𝔼𝕊 . My design work has been for commercial customers, including several Fortune 500 firms. I have strong grip on Firmware writing and Hardware designs. Because of my 12 years experience, it is highly likely I've already worked with the technologies you need to make your project a success. PRODUCT DEVELOPMENT - Circuit Design and Schematic Capture - Bills of Material and Part Sourcing - Printed Circuit Board Layout and Manufacturing Data - Assembly and Fabrication Drawings - Prototyping - Debug - Product Testing - Embedded Firmware and Application Software • ESp32/ESP8266 programming using in ESP-IDF/ Arduino • STM32 ARM M3 programming in Keil-MDK,STM32CUBE IDE and Micro C pro for ARM. • Linux Programming for Raspberry Pi Programming for I/O read /Image processing. • Nordic Semiconductor nFR series Wireless SoCs • Amazon IOT core • FreeRtos / MQXRTOS / Mongoose OS. • Experience with LAN, TCP/IP, wifi, LORA, Bluetooth, BLE, RS232, I2C, SPI, RS485, MOD Bus, etc. • Experience with Temperature ,Humidity, gyro, Accelerometer, Light, Sound, Power, CO2 and Medical sensors and many more My lab is equipped with all the necessary hardware/firmware development equipment, including oscilloscopes, signal generators and analyzers, power supplies, and a myriad of other miscellaneous tools useful for debug and test. To see some of the examples of my work, Please check out my project list. Thank you, Abu.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    nRF51
    ESP32
    Electronics
    STM32
    Microcontroller
    nRF52
    Circuit Design
    Arduino
    PCB Design
    Embedded System
    Computer Hardware
    C++
    Microcontroller Programming
    Electrical Engineering
  • $45 hourly
    Please don't invite me if you need only some low pay (< $45/hr) low skills (such as ESP32, Arduino copy and paste alike etc) jobs, it's insulting for a professional, thanks. Thank you for taking the time to view my profile. I'm a professional electrical engineer with experience in power electronics, digital circuits, analog circuits, and HF RF circuits. My favorite EDA tools are OrCAD Capture CIS for schematics design, Allegro for PCB design, PSpice for circuit simulation, Verilog/Vivado for digital and FPGA design, SIMetrix/SIMPLIS for SMPS design. Still, I have used many other EDA tools under customer/client requests in the past, such as Altium Designer, LTspice, TINA-TI, ADS, Quartus Prime, etc. I'm also a professional programmer with experience in PC BIOS, BSP, Linux, and Android, and I'm familiar with many programming languages such as x86 assembly, ARM assembly, C, C++, Java, Python, HTML, CSS, XML, SQL, JavaScript, Unix shell script. I have many mass production designs for domestic clients and some from foreign countries. If you want reference to some of my product designs, I can ask for the client's permission as they are mostly NDA secured. I'm serious about the intellectual properties of others. But you can view my portfolio for a LF N2PK VNA and a Red Pitaya STEMlab125 designs, both are the few best in class amateur measurement equipment with professional device quality, I improved on their original design to better fit my daily electrical test requirements, and as I just produce my own improved design for my private use, so it's legal for me to show them here without IP issues with the copyright holders. My current interest and most recent skills are FPGA, SMPS, motor control, and automotive electronics. My previous strong skills are ARM architecture board design, BSP and Linux kernel porting, and Linux system programming.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    FreeRTOS
    Android
    Linux
    Qt Framework
    SQL
    Python
    Java
    C++
    C
    RF Design
    PSPICE
    OrCAD
    PCB Design
    Analog Circuit
    Power Electronics
  • $60 hourly
    After 10 years in aerospace industry, I've a lot of expertise in embedded electronics development, production and suppliers management and quality. I'm able to guide you and develop for you from needs to mass production. I have a lot of knowledge in real time constraints, high temperatures electronics , power supplies (digital control )and embedded software. During these years, I had been also a quality supplier manager. I audited more than 100 companies. Last two years I developed an electronic and software from scratch for an innovative 3D printer. I like making complex into simple by having a global view of the system or organisation. I accept NDA and that is why I don't show much on my profile or my website.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Digital Electronics
    Sensor
    Microcontroller Programming
    Quality Control
    Electronics
    PCB Design
    Microcontroller Design
    Quality Assurance
    Autodesk Fusion 360
    Photography
    LED Physics
    Power Management
    Adobe Lightroom
    Electronic Design
    Power Electronics
    Embedded System
  • $50 hourly
    Expertise in Power electronics, SMPS power supplies, Motor control, VFD drives, power distribution, transformers, PLC and Industrial automation. Extensive design capabilities in Eagle Cad and KiCad for PCB designing and layouts. Well versed with Embedded systems engineering and micro-controller programming. About me:- I am an Electronics engineer with 12 years of Experience in Industrial Electricals and Electronics technology. My areas of expertise are Power Electronics and Motor control. I have worked with Megawatt size AC-DC converters, wind turbines, UPS systems, motors and Drives for critical applications, and Industrial Networking systems during my stint at ABB and then Siemens. For the last 2 years, I have been consulting with various individuals and companies regarding Power Supplies, AC-DC converters, Electric Vehicles, etc.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Design Simulation
    Hardware Design
    Autodesk Fusion 360
    Altium Designer
    Hardware Prototyping
    Eagle
    Sales
    Power Electronics
    Embedded System
    Embedded Application
    PCB Layout
    PCB Design
    Electronic Circuit Design
    Electrical Engineering
    Electrical Drawing
  • $105 hourly
    # Altium Designer # Work on complex designs with FPGAs (>1000 pins), CPUs, DDR2/3/4, Ethernet Switches. # Most designs have USB, SATA, RGMII, SGMII, 1G/10G Eth. # Controlled impedance/length matching, via back-drilling, blind/buried vias, HDI. # Designs range from small (<100 comps) to large systems (multiple PCB >2500 comps each). # Worked on Automotive, Mil-spec/Tempest, Space, High Power (> 50A, > 500V), Audio, Mixed A/D, & RF. Services provided: # PCB Layout -- High Speed, Mixed A/D, RF, Audio, High Power, Telecom, Test, Mil-spec/Tempest. # Schematic Capture -- Hierarchical or Flat, BOM selection, Sim/Signal Integrity. # Library Management -- Schematic symbol, PCB footprint, integrated 3D info in footprints. # Electronic Design -- High Speed, A/D, Audio, Mixed. # Electronic Design starting from the ground up to the end.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Digital Signal Processing
    Printed Circuit Board
    Electronic Circuit Design
    Circuit Design
    Robotics
    Digital Electronics
    Schematic Capture
    Mechatronics
    PCB Design
    Electronic Design
    Altium Designer
    Electrical Engineering
    Electrical Layout Design
  • $65 hourly
    I work as a full-time electrical and electronics engineer in the medical electronic devices industry. I design and develop hardware, embedded firmware, and RTL code for commercial and industrial applications. My expertise lies in : 1. Advanced hardware design/High-Speed PCB layout (using Altium) including 3D CAD models with a critical focus on EMI, ESD protection, and Thermal management. 2. Embedded Firmware development for IOT and RF applications spanning a wide range of microcontroller architectures including ARM, AVR, and PIC 3. RTL Design (VHDL and Verilog) for Xilinx and Lattice FPGAs. I have extensive experience with communication protocols such as I2C, CAN, SPI, QSPI, RS-485, DMA, USB, UART, Bluetooth, and WIFI. I also have experience designing analog filters, power supplies, battery recharge and hot swapping circuits, low-noise Analog to Digital circuits, current meters capable of measuring down into the nano ampere range, Class AB and Class D amplifiers for audio applications.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Python
    ARM Cortex-M
    Arduino
    Atmel AVR
    PCB Design
    SolidWorks
    TensorFlow
    STM32F4
    PIC32
    Altium Designer
  • $85 hourly
    Summary: Expert robotics engineer with 22+ years experience in mechanical, software, and electronics design; experienced in developing profit models for cryptocurrency mining. | Engineering/Electronics | Robotics engineer; BS in mechanical engineering from Carnegie Mellon University. Specialize in 3D CAD design, FEA stress analysis, expert level PCB design/analysis/manufacture, and Atmel / ESP32 microcontroller programming. Significant prototyping and mass manufacture (as a product) experience. keywords: ESP32, nRF52, ATmega, BLE, WiFi, Arduino, Zigbee, PCB design, Eagle, CAD, Autodesk, Zigbee, IoT, wireless, fingerprint sensor, solar, MPPT | Crypto Mining Advisor | I advise clients interested in mining cryptocurrencies. My offering includes an advanced financial model to predict mine profitability under various conditions over time. I also offer CFD airflow design and modeling of server rooms, thermal heat transfer analysis for mine cooling, and alternative crypto asset investing consultation. keywords: Bitcoin, BTC, Ethereum, ETH, cryptocurrency, PoW, PoS, investing | Technical Writing | Professional robotics scientist in a previous career; 20+ scientific publications (can send link to publications upon request). Clients often hire me to write on complex engineering topics.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    PCB Design
    Finite Element Analysis
    Financial Modeling
    C
    Bitcoin
    Cryptocurrency
    Mechanical Engineering
    Robotics
  • $89 hourly
    Lead Electrical Engineer with 7+ years experience developing high quality electronics. From idea, to prototype, to production. My experience in every single step of the process can help you bring your ideas to reality. Below is a summary of some of the technologies I’ve worked with: Microcontrollers ✅ STM32 ✅ ESP32 ✅ ATmega ✅ ATtiny ✅ Intel Cyclone FPGA Communication ✅ Ethernet ✅ Bacnet IP / MSTP ✅ RS485 (Modbus), RS422 ✅ SPI, I2C, I2S, UART, USB ✅ Isolation (magnetic, capacitive and optical) Motor Drive and Robotics ✅ Brushed and brushless DC motors ✅ Stepper motor drives. ✅ Variable Frequency Drives. Power Electronics ✅ Lithium-ion Battery Management Systems ✅ Solar cell energy harvesting (MPPT) ✅ Power over Ethernet Audio ✅ Class-D amplification ✅ Digital Signal Processors ✅ BT streaming (CSR QCCxxxx series) Sensors and Instrumentation ✅ IMUs, accelerometers and motion sensors. ✅ User input via (capacitive touch) buttons, rotary encoders, potentiometers, sliders. ✅ Temperature sensing using NTC thermistors, thermocouples and IC based solutions. ✅ Displays like OLED and LCD Manufacturing ✅ Component sourcing and supply chain design ✅ Cost optimisation ✅ Fast turn-around prototypes using my own assembly line ✅ Help with assembler selection for off- or onshore assembly outsourcing ✅ Design for Test including fixture design ✅ Rapid prototyping, CNC, 3D Printing and laser cutting ✅ Mechanical integration Software Proficiency ✅ Kicad ✅ Altium ✅ Git(hub) ✅ Visual Studio Code ✅ Arduino IDE ✅ Fusion 360 ✅ Inkscape ✅ IntelliJ Software development: ✅ C/C++ (embedded) ✅ Java (desktop UIs)
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Hardware Prototyping
    Manufacturing
    Circuit Design
    Electronics
    Design for Manufacturing
    Hardware Design
    ESP32
    Altium Designer
    KiCad
    C++
    WiFi
    PCB Design
    Bluetooth
  • $125 hourly
    I’m Kevin. I design things. Over the last ten years I have taken over twenty commercial products from concept to manufacture while navigating startup challenges along the way. I am “practical” above all else. A team player and easy to communicate with, I am able to take rough concepts and deliver them as working products or prototypes with minimal cost and hassle. My specialty is electronic hardware design, though most projects involve physical or mechanical parts as well. This is my full time job, working from my dedicated workshop near Portland, Oregon. I have in-house capability for most aspects of bringing up new designs and fabricating one-off devices or prototypes. We have high resolution SLA 3D printing (UV resin), a large 4x8’ production CNC machine suitable for plastics and most aluminum, and plenty of bench/floor space for your project. I have relationships with various local machine shops and test labs, so extra support is convenient if needed. I work in Altium Designer for schematic and PCB board layout, and use Solidworks or Autodesk Fusion for physical component design and working with complex physical assemblies. I have designed many injection molded parts, stamped metal parts, etc. Many of my products involve radio so I’m familiar with the FCC test lab process for both module based radios and custom designs. I have designed Internet of Things IoT products, wireless mesh networking, and low cost proprietary point to point radios. I am intermediate level coding on small 8 to 32 bit microprocessors in C,C++. My code is extremely "human readable" and cleanly documented. I have solid experience with Mircochip PIC processors, Atmel, STM32, and MSP430. I have written several low level handlers for custom board hardware and protocols. If you’re looking for a competent person that is easy and reliable to work with, and who will handle your project as if it were their own, let’s chat and see what happens. Electronics: -Embedded Hardware Design -PCB Circuit Board Design -Low-level Microprocessor Coding, C, C++, Python -Radio Wireless Communications and Certification -Internet of Things, IoT, Mesh Networking, Zigbee -Robotics -Automation -Short Run PCB Assembly -Prototyping and Test Fixtures (in house) -Reverse Engineering, Proprietary Protocols -Testing, Debugging, Product Validation Mechanical: -Solidworks -Autodesk Inventor / Fusion360 -Complex Assembly Design -Process, Testing, and Assembly Fixtures -Injection Molding -High Resolution SLA 3D Printing (in house) -CNC Machining (in house) -Industrial Processing Fixtures -Plastics Fabrication (Tanks, Jigs, Wet Processing, etc.) -Rapid Prototypes and 3D Printing for Industrial Parts -Moving Parts, Gearing, Bearings, etc. Support Services: -Connections with Contract Manufacturers -Crowdfunding, I've raised approx $400k via Kickstarter, Indiegogo -Relationships with Asian and China Manufacturers -Injection Molding & Stamped Metal Parts from Asia -Patent Experience (I hold 7 Patents)
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Product Design
    Electronic Design
    Hardware Prototyping
    Arduino Firmware
    Firmware
    Circuit Design
    Injection Mold
    Mechanical Design
    RF Design
    Electronics
    Product Development
    3D Printing
    SolidWorks
    PCB Design
    Electrical Engineering
  • $30 hourly
    PROFILE Formerly Ass. Prof. in the Military Technical College. • Microwave and RF system design engineer • Analog and digital circuit design engineer • CAD/CAM engineer for PCB design and manufacture by CNC machines • Microwave and RF circuit design engineer • Microwave receiver expert. • University lecturer (Microwaves, Receivers, Logic Circuits, Electromagnetic Fields and Computer Networks). KEY ACHIEVEMENTS • Design, implementation, and testing of hundreds of RF and MW filters. • Design, implementation, and testing of wide-band printed dipole antennas (2009- 2013). • Author of 24 papers published in different international conferences and academic magazines, most of which are single-author papers. • Design, implementation, and measurement of a complete DRFM. • Proposing a new method for digital frequency translation using DRFM. It was published in a paper and successfully implemented. • Supervision of 4 MSc. Theses and 1 Ph.D. Thesis. • Reviewing 5 Msc. Theses and 5 papers. • Leading more than 30 graduation projects. • Hundreds of RF and Microwave PCB's have been designed by me and prototyped under my direct supervision. Most of those circuits were Microstrip circuits. Some coplanar waveguide circuits have also been designed and implemented. • FR4 was the main substrate in most designs. Different professional substrates (of Rogers and Arlon products) have been used in my designs with relative permittivity ranging between 2 and 10.5 and dielectric height between 0.2 and 2.6 [mm]. CAPABILITIES I can design RF systems and circuits, RF antennas and electronic circuits, give you full design and prototyping documentation (including design description, design equations and calculations, simulation results, schematic and layout drawings, Gerber files, Excellon files and BOM files, test procedures and test recommendations) and give full technical assistance to you in prototype building and testing. No prototype building No software coding
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Digital Electronics
    RF Design
    Electronics
    Scientific Writing
    Amplifiers & Filters
    RF Microwave Design
    Circuit Design
    System Analysis
    Instrumentation
    Electrical Engineering
    Eagle
    PCB Design
    Antenna Design
    Electronic Design
  • $150 hourly
    I have over 21 years of experience working and consulting for tech companies in Silicon Valley. Every technical challenge that I had overcome assured me that with the right frame of mind, I could accomplish anything. Engineering is also my hobby, and I have been doing it since before high school. I was born with a soldering iron in one hand and writing code with the other. I designed the hardware for over 100 projects, most of them being sold today. Some notable ones are Snapchat Spectacles (designed most of the electronics and PCB layout), Thornwave Labs' Bluetooth DC Power Meter (PowerMon) and all the other projects on the webpage, various RF modules (RN-171, RN4020, RN52), and development boards designed while working at Microchip. I also created production testers, lots of C/C++ programming, and firmware design. What I can do for you? --------------------------- High Level: project management, research. I am very experienced with hardware design and firmware, which allows me to integrate them more efficiently. Hardware: circuit design, component selection, electrical schematic, PCB payout. I am using Altium Designer. I will provide you with everything you need to go to manufacturing: Gerber files, NC drill, pick and place, assembly diagrams, 3D prints, 3D STEP model, and electrical schematics as well and offer support after the project is completed too. I have experience with analog and digital design, RF, high-speed design, microcontrollers, highly complex boards, LCDs. I can run Spice simulations as well. I worked with various technologies and protocols: SPI, I2C, UART, USB, CAN, RS-485, Ethernet, Bluetooth, WiFi, and so on. Prototyping: I will manufacture the prototypes at a much lower cost than average. Over the years, I have developed working relationships with manufacturers in China, hence the cost-saving. I also have a lot of equipment: multimeters, oscilloscope, logic analyzer, vector network analyzer, USB protocol analyzer, power supplies, digital electronic load, soldering equipment, computers, and so on... Certifications: I can assist and oversee the certification process for FCC, IC, and others. Firmware development: I have 22+ years of experience coding in C/C++ and 18 years of firmware development. I can architect and develop your firmware from the ground up. I am exceptionally versed in the ARM Cortex line of microcontrollers: STM32 and Nordic. I will provide you with production-quality firmware. I know the ST and the Nordic microcontrollers like the back of my hand. I can get firmware done very quickly and efficiently for these chips. Software development: Basic tools running in Linux/Windows/Mac, basic GUIs. I can develop all the software tools you need for debugging, testing, and manufacturing. Manufacturing: If your project reaches this phase, I can offer contract manufacturing services. I will be delivering your finished product, ready to sell. The rate I displayed is an average number. It can vary up or down based on the complexity of the project. My rate reflects the experience and knowledge I have. I am good at what I do. Also, keep in mind that I will not bill you for hours like lawyers do for the time they spend in the shower thinking about the project. I will bill you only for the hours I spend advancing the project in a meaningful way.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    STM32
    Linux
    BLE
    Bluetooth
    WiFi
    Power Electronics
    ARM Cortex-M
    C++
    C
    RF Design
    Digital Electronics
    PCB Design
    Circuit Design
    Firmware Programming
  • $60 hourly
    10+ years of freelance product & project management for PCB design and layout, firmware programming, and rapid prototyping. Here is a non-exhaustive list of relevant software/protocols/chipsets: - Strong C++, C, and C# - PCB layout and schematic capture with Altium, Cadence, Eagle, etc., with multilayer, flexible, high-speed embedded systems - FPGA programming with Verilog/VHDL: Altera Quartus, Xilinx, iCECube - Experience with low-cost MCU/single-board prototyping platforms: Arduino, Beaglebone, Raspberry Pi, NanoPi, etc. - ARM: ATSAM, STM32, PIC32, A13, FreeScale, MSP, NXP - MPU: Pic33F/18F/16F, Atmega 80251, 8052, 8951, 8051, 16, 32, 128 - Digital interfaces and wireless transmission: UART, I2C, SPI, BLE, BT, GSM/GPRS/GPS, xBee, ZigBee (particular experience with BLE HM10, HC05, ESP32, DA14508, nRF52832, 52840, BlueNRG) I also have a background in mechanical engineering and industrial design; I can implement my work into fully realized products for you. Expect me to help your business as if I am growing my own.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Microcontroller Programming
    ESP32
    Core Bluetooth
    Rapid Prototyping
    Power Electronics
    Computer Hardware Design
    Firmware
    ARM Microcontroller
    PCB Design
    Wireless Communication
    LED Physics
    Electronics
    Electronic Circuit Design
    Altium Designer
  • $80 hourly
    18+ years of experience in electronic design. 100+ major design projects delivered. 200+ happy clients served. Whatever your electronic design needs are, reach out for a quick chat, you will not regret it! What to expect: ✅Top quality design that not only meets and exceeds your requirements but can also handle those unexpected conditions that make quality products stand out from the rest. ✅Rigorous design test and measurement that leaves nothing unchecked, keeping in mind not only your interests but also those of your end customers. ✅A design that is optimized and ready for manufacturing with parts readily available. ✅Exhaustive documentation and support so you can make best use of all deliverables. ✅A flexible service that can take care of all phases in the design and prototyping process or just those parts that you prefer. ✅Long-term availability for changes, revisions, and support. ✅Above all, an honest and friendly collaboration that you can trust. I invite you to reach out to discuss your project's unique needs. Regardless of your technical background, I am here to transform your product idea into a tangible reality, employing the most efficient and cutting-edge technology. My services extend beyond design, offering assistance in defining complete project requirements, recommending suitable technology, and guiding your product to production. I can also connect you with reliable suppliers and provide unwavering technical support throughout the entire process. As a full-time freelance engineer, having worked with clients from all over the world in very diverse applications, I’ve been able to gain a broad experience in electronic design. The designs I’ve produced over the years range from the simplest of designs to very complex high-density designs at the cutting edge of technology. I have gained experience with a variety of microcontrollers, processors, sensors, interfaces, protocols, and design architectures. I’ve also been able to utilize a variety to PCB technologies ranging from multilayer rigid, HDI, flexible, rigid-flex, metal-core, as well as exotic materials such as stretchable PCB. Throughout the years I’ve also invested significantly in a spacious lab and equipment for both prototyping (including pick-and-place, reflow oven and advanced JBC soldering equipment) as well as professional test and measurement equipment (including oscilloscopes, spectrum analyzers, VNA, bench meters, electronic loads, waveform generators, ECG simulator, thermographic imaging, and data loggers), all from reputable brands (Keysight, Teledyne-Lecroy, FLIR, Fluke, Tektronix, Pico,…). My vision is to produce top quality designs with a ‘whatever it takes’ attitude and am willing to invest effort and financially in ensuring that I am well equipped to do so. Some of the specific experiences include: Software tools: Altium Designer (my primary EDA), KiCad, Eagle, Proteus; SolidWorks; Ansys, Keysight-ADS, COMSOL; VS Code, Visual Studio, PyCharm, IntelliJ; Keil MDK Arm, GCC, IAR, CodeComposer, Microchip Studio; Quartus Prime, Xilinx ISE; Programming languages: Embedded C, C++, C#, Python, Rust, Java, VHDL, Bash scripts, PHP, javascript… Microcontrollers/SoC: STM32 (often preferred), ATSAM, STM8, nRF5x (often preferred for BLE applications), EPS32, CH32 (RISCV), C2000, CC2642, CC13xx, PIC16/18, AVR, MPS430, RP2040, i.MX, A20/50, RK35xx, MAX78000, … Protocols/Buses: RS485/422, USB, UART, SPI, I2C, CAN, LVDS, DDR; Modbus, NMEA2000, MQTT, … Common design features: - BLE / Wi-Fi with custom PCB trace antenna, fully simulated and tuned on prototypes. - USB charge circuit for Li-Ion battery, including fast charging. - Battery protection circuits and cell balancing. - PoE source/device/injector designs with necessary protocol handshakes. - ARM embedded processor design running embedded Linux system. - RTD measurement circuits, 3/4 wire, 24 bit, PGA and filtering. - ECG, EOG, EEG monitoring wearable designs. - IMU motion tracking with sensor fusion and quaternion streaming. - GNSS location tracking, including high precision RTK modes. - Audio capture, filtering, processing, and amplification. - DC/DC converters in various topologies including buck, boost, buck-boost, SEPIC, CUK, H-Bridge, cascaded, multi-phase. AC/DC converters (flyback, feed-forward, …). DC/AC inverters, BLDC control… - LED driving with attention to color rendering and thermal management. - Solar MPPT controller. - UHF long range wireless designs, LoRa, Sigfox. Cellular interfaces 4G, LTE, NBIoT, LTEM. My commitment to excellence, innovation, and collaboration has been the cornerstone of my career. I look forward to the opportunity to bring your vision to life, leveraging my extensive skill set and passion for electronic design. Feel free to contact me to embark on a successful journey together.
    vsuc_fltilesrefresh_TrophyIcon Analog Electronics
    Electronic Design
    Embedded System
    Circuit Design
    Digital Electronics
    Hardware Prototyping
    Electrical Engineering
    Firmware
    Embedded C
    Embedded Linux
    Hardware Design
    Altium Designer
    PCB Design
    Internet of Things Solutions Design
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