Hire the Best PBworks Development Specialists

I am a Senior Electrical Engineer with a Master’s degree and 16 years of experience designing embedded electronic systems from concept through production. My work includes electronics architecture, schematic design, PCB layout, firmware development, server-side system integration, and prototype bring-up for low-volume and production hardware. I have extensive experience with PCB design and manufacturing, including over 10 years using Altium Designer, along with Eagle, KiCad, and other professional tools. My designs account for signal integrity, power integrity, EMC considerations, and manufacturability. I regularly support projects through prototype builds, validation, and transition to contract manufacturing. My technical background includes a wide range of sensors and subsystems such as temperature, humidity, time-of-flight, reflective sensors, load cells, RTDs, pressure sensors, light sensors, smoke detection, IMUs, magnetic sensors, mmWave radar, GPS, and image sensors. I design complete systems that integrate sensing, processing, power management, communications, and backend connectivity. I have developed designs involving bidirectional motor control, piezo mist drivers, servos, heaters, LED drivers, PMICs, battery charging and protection, audio systems with mixing and noise cancellation, RFID and NFC, AC-powered systems, switch-mode power supplies, vision systems, and closed-loop temperature control using PID. My embedded software experience includes bare-metal and RTOS-based development across a wide range of platforms, including PIC, AVR, SAMD and SAMG, STM32, nRF52, EFM32, MSP430, PSoC, LPC, Kinetis, i.MX, Jetson, and Raspberry Pi. I work with Microchip, Atmel, Nordic, ST, Silicon Labs, and Espressif toolchains, as well as FreeRTOS, uC/OS-III, Zephyr, and FPGA-based systems. I have significant experience with IoT system integration beyond the device level. This includes server-side communication protocols for connected products, backend services, databases, and client-facing applications. I have worked with REST APIs, MQTT, WebSockets, TCP/UDP, and custom protocols, using Python and Node.js on the server side, along with SQL and PostgreSQL databases. I have also developed web-based client portals using React and Bootstrap to support device management, data visualization, and system administration. Separately, I use Python extensively as a development and engineering tool. This includes writing scripts and utilities for automation, testing, debugging, manufacturing support, data analysis, and workflow integration during hardware and firmware development. I have designed wireless and connected products using ESP32 and ESP8266, nRF52, u-blox cellular modules, LoRa, Zigbee, and Z-Wave. These systems have been deployed across consumer, industrial, automotive, marine, aviation, and agricultural applications. Industry experience includes RV systems, drones, consumer electronics, industrial equipment, automotive lighting and heating, marine wireless sensor networks, aviation seat and heater controls, and agricultural equipment. I am comfortable working with both startups and established manufacturers and understand the tradeoffs required to move a design from prototype to production. I focus on building reliable, manufacturable systems and communicating clearly throughout the project. If you need an engineer who can own the hardware, firmware, and system integration end to end, I am ready to help.

Hi, I'm Paul. Transforming complex tech ideas into market-ready products is my forte. With 8 years of hands-on experience, I offer end-to-end expertise in advanced PCB design, rapid prototyping, and robust firmware development for IoT, robotics, and ultra-low power applications. My background as a startup team leader ensures a product-centric vision and accelerated project/ MVP delivery. 1. What I Offer: End-to-End Embedded & Hardware Solutions - Advanced PCB Design & Hardware Development: Multi-layer PCBs for complex applications, focusing on reliability and performance. - High-Speed Design: Expertise in USB 2.0, HDMI 2.0, DDR3/DDR4/LDDR4, PCIe, NAND Flash, 10/100/1000/10Gbase-T1 Ethernet, PoE++. - Microcontrollers & SoMs: ARM Cortex-M3/M4 (STM32WL, ESP32, Nordic nRF52/53/91 series); custom boards for Raspberry Pi CM4, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126, TI AM6254. - Power & Analog: DC-DC (Flyback, Boost, Buck, LDOs), motor control (BLDC, AC/DC servo via I/O, ADC, CAN), high-resolution ADC/DAC, Audio circuits. DFM/DFA & Compliance: Strong knowledge of manufacturing, assembly processes, and layout techniques for EMC/EMI compliance. - Tools: Altium Designer (Altium365/CircuitMarker), KiCAD, Eagle, EasyEDA; OrCAD, PSpice, CAM350. - Prototyping: Experience with BOM creation (Digikey/Mouser/JLCPCB) and combining dimensional drawings into precise Gerber formats. - CAD/3D design tool: SolidWorks, Inventor... 2. Robust Firmware Development: - Languages: C, C++, Python, Qt. IoT & Wireless: MQTT, Thingsboard, AWS IoT, Blynk; experience with RF, Wi-Fi, BLE, GSM (3G/4G/LTE), LoRaWAN. - Robotics: Expertise in ROS/ROS2 for applications like AGV, AMR, 6-axis robots. Low-level Interaction: Proficient in designing custom drivers, managing communication protocols (QSPI, I2C, RS485, RS232, CAN, Modbus TCP/IP/RTU). - UI/UX for Embedded: Figma, TouchGFX, LVGL for STM32, ESP32, Raspberry Pi. 3. Product & Project Leadership: - Startup Leadership: Proven ability to lead and manage cross-functional teams in startup environments. - Project Management: Expertise in managing design, fabrication, and procurement for cost-efficient and timely PCB acquisition. - Problem-Solving & Research: Strong initiative, research capabilities, and excellent troubleshooting skills for electrical evaluation, testing, and PCB issues. 4. Why Partner with Me? - End-to-End Product Vision: My background in leading startup projects provides a holistic view, ensuring your solution is not just technically sound but also viable and market-ready. - Deep Technical Mastery: From complex high-speed routing and power supply design to robust firmware for robotics and IoT, I handle intricate challenges with precision. - Cost & Time Efficiency: My knowledge of DFM/DFA and experience in optimizing BOMs, coupled with efficient procurement management, helps streamline your project and reduce overall development costs and time. Ready to turn your innovative idea into a high-quality product? Let's connect to discuss how my expertise can drive your project's success.

Hi, I'm David. I help turn complex electronic concepts into dependable, production-ready products. With over 5 years of practical experience, I support clients through the full development cycle, from initial design to functional prototypes and manufacturing handoff. My focus is on building efficient, scalable, and cost-conscious hardware systems that perform reliably in real-world conditions. 1. What I Deliver: Embedded Systems & Hardware Development - PCB Design & Hardware Engineering: Circuit design, multi-layer PCB layout, component selection, impedance tuning, compact design, and cost optimization. Emphasis on IPC standards, signal integrity, EMI/EMC mitigation, and thermal considerations. - High-Speed & Complex Systems: Hands-on work with DDR, HDMI, MIPI (CSI/DSI), PCIe Gen1/2, along with SoC and FPGA-based prototyping. - Embedded Platforms: STM32N6, STM32H7/STM32H5, STM32F7/STM32F1/F3/F4, ESP32/ESP8266, Nordic nRF52 series, ARM Cortex-A systems, Raspberry Pi (CM4/CM5), Zynq-7000. - Power & Mixed-Signal Design: Switching regulators (Buck, Boost, Flyback), LDOs, battery systems, motor control (BLDC, stepper, servo, DC), and analog/digital integration, PoE, LLC. - Manufacturing Readiness: BOM preparation, Gerber generation, and design adjustments to streamline production and reduce costs. - Tools: Altium Designer, KiCad, LTspice, Proteus, MATLAB/Simulink . 2. Firmware & Software Development - Programming: C, C++, Embedded C, Python (for automation and validation). - System Development: Linux-based platforms, MCU firmware, RTOS (FreeRTOS), power optimization, bootloaders, OTA updates, and debugging. - Connectivity & IoT: WiFi, BLE, LoRa, Zigbee, GSM/LTE/NB-IoT/5G, GPS, RFID, NFC. - Communication Interfaces: UART, I2C, SPI, I2S, RS232, RS485, CAN, Modbus RTU/TCP, USB, Ethernet. - User Interface: LVGL-driven GUIs, TFT/OLED displays, and touch interfaces. 3. Development Process & Collaboration - Product Lifecycle Support: Concept → prototyping → validation → production handover. - Workflow & Management: Organized development using Git, Jira, and structured documentation with clear milestones. - Global Collaboration: Experience working across US, EU, and Asia time zones with consistent communication. - Troubleshooting: Strong capability in diagnosing and resolving both hardware and firmware issues. 4. Why Choose Me? - Unified Skillset: Combined hardware and firmware capabilities help minimize back-and-forth and speed up delivery. - Practical Engineering Approach: Designs are built with real-world constraints in mind — not just theory. - Efficiency-Oriented: Focus on reducing unnecessary costs while maintaining performance and reliability. - Clear & Responsive Communication: Regular updates, well-documented progress, and quick feedback. Looking to bring your idea into a functional, well-engineered product? Feel free to reach out. I’d be glad to discuss your project !!!

Hello! I’m Ben, a hardware and firmware expert with 8+ years of experience in designing hardware, programming embedded systems, and developing high-performance software solutions. My goal is to provide innovative, reliable, and high-performance solutions that meet your needs. With a strong track record on Fiverr (Level 2, 5 stars) and Upwork (Top Rated Plus, 5 stars), I have successfully delivered top-tier service to over 100 clients. What I Offer 1. End-to-End Embedded & Hardware Solutions - Advanced PCB Design & Hardware Development: Expertise in schematic capture, PCB layout, and multi-layer board design for reliable, high-performance, and manufacturable products. Experienced with KiCad, Altium, OrCAD, and Eagle. - High-Speed Design: Strong experience in 1–12 layer PCBs, including DDR3/DDR4/LDDR4, PCIe, USB (2.0/3.0/3.1/3.2), HDMI and 10/100/1000/10Gbase-T1 Ethernet. - Microcontrollers & SoMs: Firmware and hardware development for ARM Cortex-M3/M4 (STM32, ESP32, Nordic nRF52/53/91 series); custom boards for Raspberry Pi CM4/CM5, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126, Allwinner, Zynq-7010. - Power & Hardware Integration: Experience in DC-DC, AC-DC, Buck, Boost, and Flyback converters, along with hardware design involving audio, RF modules, PA, LCD, filters, RFID, touch screens, and LVGL-based interfaces. - Prototype, Testing & Validation: Full support for board bring-up, debugging, validation planning, and functional testing to ensure hardware works reliably in real-world applications. - Manufacturing & Prototyping Support: Preparation of BOM, Gerber, and manufacturing-ready files, with hands-on support for prototype production and manufacturing through JLCPCB and PCBWAY. 2. Robust Firmware Development - Languages & Development: Strong embedded firmware development in C/C++, Python with experience using Visual Studio Code, STM32CubeIDE, Arduino IDE, ESP-IDF, and Segger. - Communication Protocols: Proficient in USB, UART, I2C, SPI, I2S, RS232, and RS485, enabling reliable communication across embedded systems and connected devices. - Wireless & Connected Systems: Experience with BLE, BLE Mesh, ZigBee, UWB, LoRa, NB-IoT, 4G LTE, Wifi, WiFi Mesh, and NFC for IoT and wireless product development. - Sensor: light sensor, CO, Smoke Sensor, Dust Sensor, Air Sensor, pH sensor, IMU sensor, Accelero, Gyro sensor,... - UI/UX for Embedded: Figma, TouchGFX, LVGL for STM32, ESP32, Raspberry Pi. - Motors Control: BLDC, Stepper, Servo, DC Motors - Robotics: Expertise in ROS/ROS2 for applications like AGV, AMR, 6-axis robots. Some of my product that I have designed and released to the market: - Home IP Camera: SoC-based design with DDR3 RAM, Ethernet/Wi-Fi streaming, CMOS image sensor, IR LED array, IR-cut control, USB, and MicroSD - Smart Home Products: Home Gateway with Ethernet, Wi-Fi, Zigbee, and TFT LCD; Smart Switch with capacitive touch, Zigbee, power metering, and AC load control - Tablet Mainboard: RK3399-based board with DDR3, eMMC, touch screen, LTE. - Smart Water Meter: BLE/Wi-Fi design with TI MCU. - Wearable Devices: Low-power wearable designs with wireless connectivity, sensors, and battery management - High-Performance ESC for Drones: Real-time motor control design for efficient and stable drone operation - Custom SBC with AI Module: Raspberry Pi-based SBC solutions with integrated AI capabilities And a lot of other products. With our experience and expertise, I’m confident I can provide tailored solutions to help you complete your project and release your product to the market . I look forward to the opportunity to work with you.

I am mechatronics engineer from Việt Nam with 7+ years of experience in designing PCBs. I am familiar with various CAD tools including tools preferred by Manufacturers. I am interested in doing this project with you. I have experience with Circuit Board designing and modification jobs. Handling circuits and PCB is my daily job. I would like to talk about this project in details please message in the inbox to discuss more. Expertise in: 1. KiCAD (main), Cr5000, EasyEDA, EAGLE, Altium, and other CAD tools. 2. PCB layout designing. 3. Design 3D model: Freecad, solidworks, CAD ... 4. Embedded device programming: Arduino, Avr, Esp8266, Esp32, Stm8,raspberry ... 5. Circuit Designing from Scratch. 6. Multilayer,Highspeed PCB design. 7. Python,labview software design

Physical Security Submittal Drawings and Electronic Lock Permitting services. I help contractors, integrators, and consultants transform complex security requirements into clear, professional, and compliant solutions. With over 11 years of experience in Access Control, Intrusion Detection, and Video Surveillance, I ensure every electronic lock installation meets local regulations, life safety codes, and building standards. Our team handles the permitting process from start to finish, including device layouts, specification sheets, and submittal drawing packages, all delivered quickly and professionally, with your company branding. Physical Security Design Engineer with hands-on experience in AutoCAD and Bluebeam, specializing in drafting, design markups, and documentation for access control, CCTV, and Intrusion systems.