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$55 hourly
Xiaolin Y.
- 4.4/5
- (46 jobs)
⭐Innovation meets Ingenuity in Electronics Engineering With nearly two decades of experience in electronics engineering, I specialize in delivering solutions that blend innovation and ingenuity. My expertise covers circuit design, analog/digital electronics, embedded systems, signal processing, manufacturing, and sourcing across diverse domains like IoT and telecommunications. ⭐ Please note: I can best assist you if you can provide clear and specific work requirements and scope. ⭐⭐⭐⭐⭐About Me⭐⭐⭐⭐⭐ Over 20 years in electronics design, manufacturing, and Supply Chain Management (SCM) 13 years with Fortune 500 companies Flextronics and Huawei Cross-functional team experience in the Middle East and North Africa (3 years) Founder, PCBLOOP Technology and BTS, an engineering service company with 150 employees Lead a team of 24 engineers and technicians ⭐⭐⭐⭐⭐Services I Offer⭐⭐⭐⭐⭐ (PS:-Company URL: pcbloop.com and electronicspcbs.com) • Electronics product prototype development, manufacturing, and consultancy • Detailed preliminary research report for your product idea and concept • Architecture design and technology stack selection • Hardware platform and key components selection • Prototype development based on preliminary research • Commercial electronics product development offering end-to-end services including: ⚡⚡⚡R & D ⚡⚡⚡ - Architecture design - Hardware circuit design - PCB design - Firmware development - Software design - Device backend development - Web or apps development - EMI/EMC simulation - Thermal simulation - Mechanical design - Industrial design - Mold design - Deployment of backend/frontend on server - Prototype hardware and software debug/testing - Design for manufacturing/testing/assembly review ⚡⚡⚡Production⚡⚡⚡ - Product prototyping - PCB fabrication - PCB assembly - 3D printing - Plastic mold injection - Component & parts sourcing and purchasing - Turnkey/non-turnkey project contract manufacturing - Mass production/lean engineering services ⭐⭐⭐⭐⭐Technology Related⭐⭐⭐⭐⭐ • Development boards(SBCs) [Raspberry Pi, Intel Joule, OrangePi, Nvidia Jetson, Rockchip, etc.] • Microcontrollers [Arduino family, ATMega, Atmel, ARM, ESP8266, ESP32, STM32, etc.] • Hardware protocols [RFID,NFC,ZigBee,NB-Lot,USB, HDMI, Ethernet, Wi-Fi, BLE, PCIe, VGA, RS-232, I2C, SPI, UART, etc.] • Software protocols [GSM,CDMA,WCDMA,LTE, TCP/IP,SNMP, MQTT, UDP, RTP, RTSP, NFS, etc.] • OS [Windows, Linux systems, OS embedded Linux, Android, iOS, FreeRTOS, FreeBSD, etc.] • Programming languages and scripting [Python, C/C++, Javascript, BASH, etc.] • Web technologies [ReactJS, AngularJS, Node-RED,etc.] • Deployment and versioning control suites [CVS GitLab, Git, GitHub,etc.] • IoT platforms [Self-hosted platforms, AWS IoT, Azure IoT,etc.] • IAE platforms[Siemens SIMATIC, Omron Sysmac,etc] ⭐⭐⭐⭐⭐Category of the Product⭐⭐⭐⭐⭐ • Consumer and smart IoT electronics: [Wearable smart devices, smart home devices, industrial IoT devices, smart health devices, smart pet products, charger and power devices] • Industrial automation equipment: [Controlling and monitoring (water, electricity, gas, temperature, humidity, pressure), motors and drive, industrial networks, measurement instruments] • Automotive industry: [In-car entertainment systems, in-car navigation, automotive lighting] • Internet and Telecom:[Mobile phone, Internet and Satellite Communications] ⭐⭐⭐⭐⭐Client Testimonials⭐⭐⭐⭐⭐ "Xiaolin’s team is very professional and hardworking... always satisfied with the jobs they delivered." - Allen Geli, CEO of Taotol "Frankie is an excellent engineer and supervisor... expecting my next opportunity to work with Frankie." - Andrew Ruess, Huawei Hardware R&D manager "Xiaolin is the best guy in the hardware engineering area... thank him for his outstanding support." - Mike Durkan, Engineering Director of Cisco Tags: Electrical Engineering, Electronics Engineer, 3D modeling,ID,Firmware, PCB layout, Schematics, Altium Designer, IoT, Power Electronics, Bluetooth, BLE, RF, TI,FPGA, SoC, VHDL, Verilog, Xilinx, Altera, C, C++, MCU, RTOS, prototype, validation, Enclosures, BMS, SolidWorks, Android, iOS, Java, Apps, Database, AWS, Python, ESP32, Arduino, PIC, NXP, STM32, LCD, Raspberry Pi, Wi-Fi, Prototyping, WAN, Assembly, Motor Driver, JLC.

Circuit Design
Multilayer PCB
RF Design
Lean Manufacturing
Hardware Design
Firmware Programming
Altium Designer
Electrical Engineering
PCB Design
Sourcing
Electronic Design
WiFi
Embedded System
Prototyping
Bluetooth
$100 hourly
Zhang F.
- 5.0/5
- (15 jobs)
1 plc skills (Siemens / Bechkoff/AB plc, mitsubishi, omron, ABB，schneider.... etc) 2 robot skills(KUKA/ABB/Fanuc/Yaskawa/keba) & powermill design simulation &solidworks 3 Vision camera programming (Congex) & Labview Progamming and Commission &Eplan design 4 840D and Fanuc 31i gantry program & C# Programming 5 language: fluent english and learning german 6 all the skills above proved by projects , insteading of bluffing

Circuit Design
CNC Programming
Robotics
PLC Programming
$40 hourly
Xu T.
- 4.7/5
- (20 jobs)
I’m an Electrical engineer having more than 12 years experience in Hardware development. I am from Shenzhen and developed many hardware . I am providing PCB design Services : Schematic Capture, BOM optimization, PCB layout. I can process the orders in PCBway, JLCPCB or local Company to make a samples or mass production. I have good experience in the follows fields ------- Hardware Development ------------- - Bluetooth, Wifi, Ethernet, CAN, RS-232/485/422, SPI, I2C, Uart, nRF5283x, nRF82840, CC264x, CC265x, ESP32, - Sensors : Temperature, Humidity, Motion Sensor, MEMS/IMU, Pressor sensor. etc. - GPS/GNSS Tracker device. - ARM - Based Controller : STM32F1xx, STM32F2xx, STM32F4xx. STM32L1xx, STM32L4xx , TI, Microchip, Atmel, PIC etc. - Raspberry PI, CM4, Orange Pi, Beagle Bone. - FPGA + DSP PCB design. Xilinx(Artix-7, Spartan, Vertex), Altera. - VESC, Motor Control PCB, - 2~8 Layers PCB. PCB design softrware - Altium desinger - Kicad 7 - EasyEDA - Eagle - Diptrace

Circuit Design
ESP32
Arduino
Printed Circuit Board
KiCad
PCB Design
WiFi
Hardware Prototyping
Altium Designer
Hardware Design
EasyEDA
Sourcing
Bluetooth
Multilayer PCB
Electrical Engineering
$40 hourly
Fuqi L.
- 5.0/5
- (4 jobs)
20 Years of experience in Embedded system and FPGA - Low power profile Hardware and Firmware design - Strong experience in Xilinx and Altera, Lattice FPGA development Proficient with VHDL, Verilog, C/C++ programming, verification workflow - Deep knowledge for WiFi/Ble/Zigbee Lora/Gateway RFID Wireless communications, protocols - Good experience in DSP and AI algorithms, MATLAB simulation - MQTT, WebSocket, AWS, Cloud server, database for IoT - Various industrial, home automation, vital health sensors, sensor fusion I have designed and manufactured - Audio signal processing (Mic array) using Zynq7020 - 4K industrial camera using Zynq Ultrascale - 4K Video wall using Zynq7020 - PCIe Card to capture Camera sensor using Xilinx FPGA - wearable smart bracelets, smart rings - ECG, EEG ambulatory device with cloud support - patient monitoring (non-contact radar heartrate sensor, thermal camera, environment sensors, motion sensors, bed sensors) terminals in hospital - Garden Lora gateway with mesh network - OFDM tranceiver using SDR based on Zynq7035 and AD9361 (Hardware design, PS/PL Firmware, Customized Petalinux) - GNSS(GPS, Beidou, Glonass) system simulator using SDR.

Circuit Design
ARM Microcontroller
Verilog
Sensor Fusion
AI Development
Digital Signal Processing
VHDL
Biomedical Engineering
ESP32
FreeRTOS
Embedded Linux
Engineering Simulation
MATLAB
PCB Design
FPGA
$35 hourly
Richard S.
- 5.0/5
- (3 jobs)
Thank you for viewing my profile! I run a IDH(design house), Yoxintech, with a team of around 10 professionals based in China. With nearly 20 years of experience in international business, I’m eager to share our expertise with clients worldwide. We specialize in electronic circuit design and embedded firmware development, particularly in BLE solutions, BLDC control systems, and more. If you need help with hardware/firmware design, feel free to reach out! Expertise: • IoT device development • Embedded systems programming (C) • BLDC motor control • Hardware-software integration • Firmware development • APP/Cloud system development

Circuit Design
C
Firmware Programming
Embedded C
WiFi
Microcontroller Programming
Embedded Linux
Arduino
STM32
ESP32
Electronic Workbench
Bluetooth LE
Electronic Circuit Design
$50 hourly
YanCheng J.
- 5.0/5
- (1 job)
I am a seasoned embedded systems engineer with 20 years of experience in developing diverse products. My expertise spans across Bluetooth, BLE devices, Zigbee, LoRa, and Z-Wave technologies. I have successfully developed numerous products using a variety of microcontrollers, including STM32, PIC, Atmega, nRF52, and ESP32. **Core Skills: * Microcontrollers: STM32/NXP series CPUs, PIC (Pic16F, Pic18F, Pic33F), MSP430/MSP432, Atmega (Atmega8,16,128,32), Raspberry Pi * Communication Protocols: Wi-Fi, Zigbee, Z-Wave, BLE/Bluetooth modules (e.g., ESP32, ESP8266, NRF52 family), LoRa * Peripheral Interfaces: USB, UART, I2C, SPI, I2S, CAN, Ethernet * Development Environments: Keil, Segger Embedded Studio, IAR, CCS, Arduino, MPLAB X/IDE, Simplicity Studio, ESP-IDF * Programming Languages: C, C++, Embedded C * Operating Systems: FreeRTOS / Zephyr, Embedded Linux * Circuit/PCB Design & Manufacturing ** Flexible during working hours ( CET / EST ) I am dedicated to providing top-notch support for your projects and committed to delivering high-quality results that meet your requirements. Thank you for considering my profile.

Circuit Design
Zephyr
ESP8266
ESP32
Internet of Things
Bluetooth LE
Microcontroller
Microcontroller Programming
Arduino
STM32
Embedded System
nRF52832
nRF52
Embedded C
Firmware
$35 hourly
Dayu Z.
- 4.8/5
- (39 jobs)
Over 10 years work experiences on electronics/hardware design. Top 10% at the PCB Design and Electronic Design Test. Expert in high-speed PCB design and simulation.Expert in high-speed memory interface such as DDR3,DDR2.and so on. Good at embedded software program,which is also where my core competence lies in,I can always consider problems from the system design. My goal is offer professional work with fair price.

Circuit Design
Hardware Prototyping
Embedded System
PCB Design
Python
Arduino
$58 hourly
HuanLong Z.
- 2.3/5
- (9 jobs)
Hi there! We’re a small but specialized hardware development team based in Shenzhen, the heart of China’s smart electronics industry. With 11+ years of experience in embedded systems and IoT hardware design, we help startups and businesses bring their ideas to life-from concept to mass production. Known as the ULINK Team, we focus on ultra-low power smart devices, sensor integration, and wireless communication technologies like BLE, LoRa, NB-IoT, and UWB. Our BLE modules achieve standby currents as low as < 3μA, and we've built full-stack solutions for tracking, positioning, and remote sensing applications across industries. What We Do Best IoT Product Development (BLE, LoRaWAN, NB-IoT, LTE-Cat1) Custom PCB design, RF optimization, and antenna matching Embedded firmware development (nRF52, STM32, ESP32) Sensor system integration with power & battery optimization BLE SIP Module design, small form-factor, SiP packaging Prototyping, testing, certification (CE, FCC, RoHS), and manufacturing Typical Projects We’ve Delivered BLE Smart Tag (AirTag-like device) Developed ultra-small BLE 5.2 tracker with high-sensitivity antenna, < 12μA advertising mode. Supported OTA, iOS/Android compatibility. LoRaWAN Environmental Monitor Battery-powered air quality sensor using LoRaWAN and BLE dual-mode; over 5 years of battery life with remote firmware upgrade capability. BLE + GPS Asset Tracker Designed a coin-cell powered location tracker using BLE + GPS + motion sensor, for US logistics company. Smart Elevator Maintenance Module Built a remote telemetry device using BLE + LTE-Cat1 for elevator maintenance monitoring. Integrated RS485 and CAN interfaces. Parking Sensor System Designed a geomagnetic + mmWave radar dual-mode vehicle detector, using NB-IoT, achieving IP68 and > 5 years service life. Our Process From initial demand analysis -- component selection -- schematic + PCB -- firmware -- RF tuning -- rapid prototyping -- testing -- DFM -- batch production — we cover the entire product development lifecycle. Why Clients Work With Us Based in Shenzhen, with deep access to the global electronics supply chain Fast turnaround: Prototypes ready in 2–4 weeks Full stack: From hardware, firmware, to backend API connection Rich experience in global markets and certifications Flexible engagement: One-off jobs, long-term cooperation, or equity-based partnerships If you’re looking to build a smart device that’s power-efficient, production-ready, and tailored to your needs, we’d love to be your go-to hardware team. Let’s make your idea a reality.

Circuit Design
ESP32
Espresso
Internet of Things Solutions Design
Internet of Things
Bluetooth LE
RF Design
PCB Design
Microcontroller Design
Hardware Troubleshooting
Sensor
nRF52
Microcontroller Programming
CAD
Electrical Layout Design
$20 hourly
Haiyan Z.
- 4.9/5
- (6 jobs)
I am an Automation system design engineer, Hardware designer, Firmware developer and have the extensive experiences even over 15 years. I'm especially interested in home automation or making intelligent new products or acquire and application new technologies. I work with the target of design to low cost, low power, high performance, the miniaturization of device by a compact layout. I design carefully to achieve the best performance in all projects, I find joy and pride in the successful results of projects. The areas I've experienced a lot are as follows. ● STM32F103RCT6TR, STM32F407VGT6, STM32F429ZIT6, STM32L476RGT6, STM32H743ZIT6, etc. ● ESP32-WROOM-32D, ESP32-WROVER-E, ESP8266, etc. ● nRF51822, nRF52810, nRF52832, nRF52833, nRF52840, nRF52843, etc. ● RAK811, RAK831, RAK3172, RAK4200, etc. ● SIM7000G, SIM7070G, SIM7600E, SIM7600G, etc. ● Arduino Mega2560, Arduino Mega328P, etc. ● SRAM, DDR, DDR2, DDR3, LPDDR3, DDR4, DDR5, LPDDR4, etc. ● MEMS Sensors (3-axis, 6-axis, 9-axis), ECG, PPG, HRM, SPO2, CO, CO2, Humidity and Temperature, Touch, Pressure, PIR, etc. ● PCIe, SATA, Ethernet, HDMI, VGA, LVDS, USB, UART, USART, CAN, SPI, I2C, I2S, RS232C, RS485/RS422, etc. ● BLE, IoT, AWS, GPS, GSM, Bluetooth, Wi-Fi, Z-Wave, Zigbee, LoRa, NFC, RFID, LTE, etc.

Circuit Design
Prototype
Home Automation
Sensor
AWS IoT Device Management
Firmware Programming
Arduino
LoRa
Bluetooth
WiFi
nRF52
ESP32
STM32
PCB Design
Hardware Design
$35 hourly
Pu Q.
- 0.0/5
- (0 jobs)
Award-Winning Mechanical & Industrial Designer | Electronics Engineer 10+ years of transforming concepts into mass-produced innovations, validated by Red Dot Design Award and triple crown at China 3D Printing Design Competition. Global IP Architect with 25+ granted patents (US/EU/CN) across medical devices, consumer electronics, and industrial equipment. China Manufacturing Catalyst: End-to-end execution from CAD/PCB design to factory floor, slashing production costs by 30% via DFM/DFA optimization and a vetted supply chain network. CORE COMPETENCIES ｜ Full-Stack Product Development ｜ • Industrial Design (Rhino/Keyshot) ｜• Mechanical Engineering (SolidWorks/Creo) • PCB Design & Embedded Systems ｜• Design for Additive Manufacturing • Topology Optimization (ANSYS) ｜• Prototyping (3D Printing, CNC, Breadboarding) ｜ IP & Compliance ｜ • US/EU Patent Drafting & Filing ｜• FDA/CE/UL Design Integration • Technical Documentation (ISO 13485, IEC 60601) ｜ China Execution ｜ • DFM/DFA Analysis ｜• Electronics Contract Manufacturing (ECM) Sourcing • Injection Molding/Tooling Optimization ｜• PCB Assembly (PCBA) QC Protocols • Supplier Auditing (ISO 9001) ｜• EMC/EMI Testing Coordination

Circuit Design
PCB Design
ProEmTech Infosystems ProMed
SolidWorks
CAD
Product Design
$16 hourly
Aamir N.
- 4.8/5
- (1 job)
I have 5+ years experience in embedded system design.I offer engineering expertise for hardware and software development of embedded electronic systems. I'm looking for challenging projects in area of embedded systems and engineering research projects.I can work under any work pressure or rigid deadlines. Offered Services: * Firmware programming and testing in C. * Embedded Hardware and PCB Design. * Analog and Digital System Design and Simulation. * Research tasks. Hands on experience: * Microcontrollers (STM32F4, TM4C123GH6PMI, PIC16, PIC18, PIC32).. * Displays (TFT, Graphical Display LCD, Char Display LCD,Seven segment ). * SoCs SIMCOM GSM/GPRS (Hardware Design And Embedded Programming). nRF Bluetooth (Hardware Design). ESP (WiFi) (Hardware Design). *Sensors and Modules (Honeywell Pressure Sensors, Sharp Infrared Sensor, Secugen Fingerprint recognition device, Magnetic Card Reader and NFC Reader). *DC Motor Control (H-Bridge Design and Microcontroller Programming). *Power supply design and Lipo Battery charging. *PI Control using PIC. *Microcontroller based Digital Tachometer. Integrated Development Environments: *MPLABX, MPLAB 8.92. *mikroC PRO for PIC, dsPIC,PIC32 and ARM. *Autodesk EAGLE. *Proteus 8 Professional. *Altium Schematic. *Microsoft Visual C.

Circuit Design
PCB Design
Embedded C
Digital Electronics
Electrical Engineering
$30 hourly
Md M.
- 0.0/5
- (0 jobs)
𝐇𝐞𝐥𝐩𝐢𝐧𝐠 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬 & 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞𝐬 𝐭𝐨 𝐭𝐮𝐫𝐧 𝐭𝐡𝐞𝐢𝐫 𝐈𝐝𝐞𝐚𝐬 𝐢𝐧𝐭𝐨 𝐌𝐚𝐫𝐤𝐞𝐭-𝐑𝐞𝐚𝐝𝐲 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬. As a certified Electrical & Electronics Engineer with 800+ projects delivered across robotics, IoT, and industrial automation, I bridge the gap between technical execution and scalable business solutions. 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? -𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐇𝐚𝐫𝐝𝐰𝐚𝐫𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Prototyping (Arduino/ESP32/ARM), Sensor integration, PCB design, and embedded systems Development. -𝐒𝐨𝐮𝐫𝐜𝐢𝐧𝐠 & 𝐌𝐚𝐧𝐮𝐟𝐚𝐜𝐭𝐮𝐫𝐢𝐧𝐠: Living in the china's biggest tech city, the silicon valley of china, Shenzhen for more than 2 years, I optimize supply chains for cost-effective sourcing and production. -𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬-𝐅𝐨𝐜𝐮𝐬𝐞𝐝 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: Beyond prototypes, I align technical decisions with market needs, UX, and scalability. -𝐄𝐧𝐝-𝐭𝐨-𝐄𝐧𝐝 𝐎𝐰𝐧𝐞𝐫𝐬𝐡𝐢𝐩: From concept to MVP, I ensure your product is functional, manufacturable, and investor-ready. Besides I hold a 𝐌𝐚𝐬𝐭𝐞𝐫 𝐨𝐟 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐚𝐧𝐝 𝐄𝐜𝐨𝐧𝐨𝐦𝐢𝐜𝐬 degree from China's top ranked 7th and prestigious university 𝐇𝐚𝐫𝐛𝐢𝐧 𝐈𝐧𝐬𝐭𝐢𝐭𝐮𝐭𝐞 𝐨𝐟 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲, 𝐒𝐡𝐞𝐧𝐳𝐡𝐞𝐧 and a 𝐁𝐚𝐜𝐡𝐞𝐥𝐨𝐫 𝐨𝐟 𝐄𝐥𝐞𝐜𝐭𝐫𝐢𝐜𝐚𝐥 𝐚𝐧𝐝 𝐄𝐥𝐞𝐜𝐭𝐫𝐨𝐧𝐢𝐜𝐬 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 degree equipping me with strong Engineering and Business analytical and development skills. Having more than 4 years of experience in this industry I am able to deliver top-notch workmanship and innovative solutions tailored to meet the unique needs of your businesses. 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐲𝐨𝐮𝐫 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐭𝐨 𝐭𝐡𝐞 𝐧𝐞𝐱𝐭 𝐥𝐞𝐯𝐞𝐥!

Circuit Design
C++
Python
Java
AWS IoT Device Management
Industrial Automation
Industrial & Product Design Consultation
Robotics
Microcontroller Programming
Embedded System
Product Sourcing
Product Development
Sales & Marketing
Business Planning & Strategy
Business Development
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