Hire the Best MSP430 Professionals

With 3+ years of hands-on experience, I specialize in taking embedded products from prototype to mass production. I've completed 10+ real-world projects and successfully shipped consumer products that are now in end-users' hands. What I Do Best I build production-grade firmware — not hobby projects. My work spans the full embedded stack: hardware bring-up, device drivers, firmware, bootloaders, OTA systems, and companion mobile/PC apps. Core Expertise - MCU Platforms: STM32 (F0/F1/F4/L0/L4), ESP32/ESP32-S3/ESP32-P4/ESP32-C3, nRF52480/NRF52832, ARM Cortex-M & RISC-V, ... - RTOS & Bare-Metal: FreeRTOS (advanced task sync — queues, semaphores, event groups, task notifications), bare-metal programming, custom bootloader development, ... - Peripherals: I2C, SPI, I2S, UART, PWM, ADC/DAC, RMT, Modbus RTU, USB HID, ... - Connectivity: Wi-Fi, BLE, LoRa, NFC, GSM/GPRS, NB-IoT, 4G, ... - IoT & Cloud: MQTT, HTTP/HTTPS, WebSocket, TCP/UDP | Azure IoT, AWS, Firebase, ... - Security: Secure Boot, encrypted NVS storage, FIDO2 passwordless authentication - Languages: C/C++ (primary), Python, Dart/Flutter (mobile & desktop apps), Java - Sensors: Accelerometer, IMU, Gyroscope, Time-of-Flight (ToF), Fingerprint, Ambient Light, Temperature, Humidity, Water Quality, Gas, Heart Rate & SpO₂, ... - Peripherals: Camera, Microphone, Speaker, Buzzer, ... - Displays: TFT, OLED, LCD, HMI, ,.. - Build & Debug: ESP-IDF, Makefiles, CMake, linker scripts, GCC toolchain, GDB/JTAG — fully IDE-independent - Other: Embedded Linux (Raspberry Pi, Orange Pi), Edge AI on MCUs, VoIP, WireGuard VPN, OTA update systems, PCB design (EasyEDA) What Sets Me Apart I deliver production-ready firmware, not proof-of-concepts. Clean architecture, proper error handling, memory optimization, and power management. I work at the toolchain level — Makefiles, linker scripts, GCC, GDB — not dependent on any IDE. I collaborate effectively with backend teams, including building systems using MCP (Model Context Protocol). I've shipped real consumer electronics — I understand what it takes to go from "it works on my bench" to "it works in 10,000 units." If you're a startup building a hardware product and need someone who can take it from prototype to production, let's talk.

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.

I built and design the PCB, write the firmware, model the enclosure, and build the IoT app that controls it. Products I have built are live on Google Play, the App Store, and in the hands of US/EU customers right now. I'm a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 & 𝐈𝐨𝐓 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with a Master's in Embedded Systems and a Bachelor's in Computer Engineering. I take products end-to-end from PCB design, firmware, enclosure, IoT mobile app, to cloud, so you get one Partner accountable for the whole stack instead of coordinating four of them. 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬 𝐈 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐈𝐧: ➙ Consumer electronics, smart home devices, connected appliances ➙ Audio and DSP products, Audio/Sound Devices, real-time processing ➙ Stepper motor, CNC Machines, 3D Printers, Stepper Motors, Driver, DC Generators, Energy Harvesting ➙ Smart RGB light control Systems, Hall Effect Systems ➙ Industrial IoT, Home automation, Modbus/CAN gateways, CAN telematics ➙ Medical devices, wearables, monitoring systems, Automotive ➙ Asset tracking, smart agriculture, LoRaWAN sensor networks 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 𝐌𝐢𝐜𝐫𝐨𝐜𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫𝐬 & 𝐒𝐨𝐂𝐬: STM32, ESP32 (S2/S3, A1S Dual-Core, ESP8266), Arduino (Nano, Mega, Mini, Pro, Uno), Nordic nRF52840/nRF5340, AVR (ATmega, ATtiny), PIC16/PIC18/PIC32, Raspberry Pi, Cortex-M0/M0+/M3/M4/M7/M33, Cortex-A53/A72/A76, Cortex-R4/R5/R52, Teensy 4.1, FPGA 𝐅𝐢𝐫𝐦𝐰𝐚𝐫𝐞: Embedded C/C++, MicroPython, ARM Assembly, Verilog/SystemVerilog, VHDL. FreeRTOS, Azure RTOS (ThreadX). Bare-metal, HAL, and LL driver development. STM32CubeIDE, ESP-IDF, PlatformIO, Arduino, CMake, GCC Arm toolchain. 𝐏𝐂𝐁 𝐃𝐞𝐬𝐢𝐠𝐧: Expertise in 2-12 layer boards, rigid & flex, and HDI designs using Altium Designer, KiCad, and Eagle, with a focus on high-speed signal integrity, impedance matching, thermal design, high-current routing, and RF layout including Pi-network antenna tuning. 𝐌𝐞𝐜𝐡𝐚𝐧𝐢𝐜𝐚𝐥/𝐄𝐧𝐜𝐥𝐨𝐬𝐮𝐫𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: Proficient in SolidWorks, Fusion 360, and AutoCAD for injection-molding-ready designs, SLA/FDM 3D printing, IP65/IP67/IP68 waterproofing, and advanced thermal management. 𝐏𝐞𝐫𝐢𝐩𝐡𝐞𝐫𝐚𝐥𝐬 & 𝐁𝐮𝐬𝐞𝐬: I2C, SPI, UART, CAN (CANOpen, J1939), USB HID, PCIe, DMA, PWM, ADC/DAC, I2S/PDM audio, EEPROM/Flash. 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐯𝐢𝐭𝐲: Wi-Fi, BLE 5.x, LoRa/LoRaWAN, NFC/RFID (MiFare, ISO14443), LTE-M, NB-IoT, 4G LTE, u-blox GNSS (M8/M10), RS485, RS232, Modbus RTU/TCP, Ethernet. 𝐈𝐨𝐓 & 𝐂𝐥𝐨𝐮𝐝: MQTT/MQTTS, HTTPS, WebSockets, TLS 1.3, JSON-RPC. AWS IoT Core, Azure IoT Hub, Google Cloud IoT, Blynk, ThingsBoard, Tuya. 𝐀𝐩𝐩𝐬 & 𝐈𝐧𝐭𝐞𝐫𝐟𝐚𝐜𝐞𝐬: Flutter, React Native, React.js, Vue.js, Node-RED, Firebase, PWAs. Qt for Embedded, PyQt5. OLED, TFT, IPS, E-Paper, LED Matrix, 7-Segment, rotary encoders. 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: Secure Boot, AES, ECC, OTA updates. Design-for-certification for CE, FCC, EMI/EMC, ESD (IEC 61000-4-2), UL, ISO 9001/13485. 𝐌𝐲 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: ➙ Clear weekly progress updates, often including demo videos, schematics, firmware commits, and simulation results. ➙ Version-controlled deliverables (Git) and meticulously documented, clean code. ➙ Transparent communication regarding progress, challenges, and potential risks. ➙ Strong research-driven approach focused on solving technically difficult problems efficiently. ➙ Open to starting with a paid pilot project before committing to a larger scope. 𝐋𝐞𝐭'𝐬 𝐓𝐚𝐥𝐤 𝐈𝐟 𝐘𝐨𝐮 𝐍𝐞𝐞𝐝 A reliable partner to design a new product from scratch, rescue a stalled hardware project, and control systems, port firmware between MCU families, add IoT/cloud connectivity to an existing device, or build the mobile app and backend that makes your hardware actually useful. Invite me to your Job or send me a message with your product concept, current stage, and what's blocking you.

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 !!!

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

I'm an IoT & embedded systems engineer focused on production-ready solutions. From custom PCB design in EasyEDA to ESP32 firmware, cloud services, and dashboards — I deliver complete hardware-to-cloud systems. Hardware: schematic design, PCB layout, Gerber/BOM/Pick&Place files, JLCPCB production, AC/DC power circuits, sensor integration, engineering review process. Firmware: ESP32 (ESP-IDF/Arduino), LVGL touchscreen UI, MQTT, BLE, OTA updates, payment integration. Built and delivered: IoT smart relays (220V AC), environmental monitoring boards, sonar driver modules, vending machines, hydroponic controllers, payment terminals.