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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

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.

Thank you for visiting my profile. My name is Ta Duy Long, I have extensive experience in electronic hardware and firmware development over 6 years. My expertise and skills: 1. Electronic Schematic and PCB Design - Mastering for vavious design tools such as Altium Designer, Kicad, Eagle and EasyEDA - Qualfied design for complex digital and analog circuits - EMC/EMI compatible PCB design and ceritifications 2. Firmware development for various MCUs and Embedded System - Robust Firmware programming using C, C++, Python - Familar with various Wire/Wireless communication protocols - AI embedded system firmware development 3. Strong problem solving skills and keen eye for technical details - Solving skills for cutting edge technologies - Fixing issues and optimiztion for existing design I always provide the qualified working result and kind support to 100% project success.

✅ Professional hardware engineer with 10+ years of PCB design experience. ✅ Altium Designer 22, Cadence Orcad Allegro 16.6/17.2, PADS VX2. ✅ Prototype PCB production, PCBA assembly, Gerber modification. ✅ Design many products that have mass production. 𝙃𝙚𝙡𝙡𝙤! 𝙏𝙝𝙖𝙣𝙠𝙨 𝙛𝙤𝙧 𝙮𝙤𝙪𝙧 𝙫𝙞𝙨𝙞𝙩𝙞𝙣𝙜 𝙤𝙣 𝙢𝙮 𝙥𝙧𝙤𝙛𝙞𝙡𝙚. 𝙈𝙮 𝙣𝙖𝙢𝙚 𝙞𝙨 𝙃𝙪𝙮, 𝙥𝙧𝙤𝙛𝙚𝙨𝙨𝙞𝙤𝙣𝙖𝙡 𝙝𝙖𝙧𝙙𝙬𝙖𝙧𝙚 𝙚𝙣𝙜𝙞𝙣𝙚𝙚𝗿, 𝘄𝗶𝘁𝗵 𝟭𝟬 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗱𝗲𝘀𝗶𝗴𝗻𝗶𝗻𝗴 𝗺𝗮𝗻𝘆 𝗺𝗮𝘀𝘀 𝗽𝗿𝗼𝗱𝘂𝗰𝗲𝗱 𝗲𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 My job is to 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 10+ years' experience in design hardware for Consumer Products, IoT Products and Telecom Products. So, I think I can complete your project with the best results, optimizing cost and time. 𝗜. 𝗕𝗲𝗹𝗼𝘄 𝗶𝘀 𝗺𝘆 𝘄𝗼𝗿𝗸𝗳𝗹𝗼𝘄 𝗶𝗻 𝗵𝗮𝗿𝗱𝘄𝗮𝗿𝗲 𝗱𝗲𝘀𝗶𝗴𝗻: 1. Receive your requirements, discuss to have final product/circuit specs 2. Design block diagram for circuit: need to very detail, it will decide what part will be used in project 3. Calculating and design schematics: follow block diagram to design schematic for product, with full features and requirements of the product. 4. Design PCB Layout: with requirement about Mechanical Design and Industrial Design, i will do the PCB Layout fitted with your MD that archive best performance 5. Extract production data: BOM, CAD, GERBER, DESIGN, ASSEMBLY GUIDELINE, IMPEDANCE CONTROL REQUIREMENTS, ... 𝗜𝗜. 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗯𝗼𝘂𝘁 𝗺𝘆 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 - About SoC and GPU: Intel chipset, MediaTek chipset (MT8765/8766), Broadcom chipset (BCM7241, BCM7563), Realtek chipset (RTL8188/8192), NVIDA Jetson nano/TX ... - About microcontroller: ESP32 (Chipset and module), STM32, MSP430, ATMEGA, PIC, ... - About power design: Texas instrument IC (TPS54226, TPS542941, TPS54620), Richtek (RT3607CE, RT8068)), Mediatek (MT6239), ETA solution (ETA3409/3499) - 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: Wi-Fi, BLE4.x/5.x, Lora, Zigbee, Sub1GHz, NBIoT... - About GPRS/3G/LTE Module: SIM800C/H, SIM900A, SIM908, SIM5320, SIM5360, SIM7600E, Quectel MC60/M95. - About highspeed PCB Design: DDR3/DDR4, SATA, PCIe, 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 Smart box, Smart home, with very big quantity, so I will know how to design for manufacturing with your product, design mass production process, to ensure product quality in large quantity. - I also have experience in evaluating product quality in R&D phase and Mass production phase, tests related to product durability / stability, helping to control product quality well 𝗜𝗜𝗜. 𝗦𝗼𝗺𝗲 𝗼𝗳 𝗺𝘆 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝘁𝗵𝗮𝘁 𝗜 𝗵𝗮𝘃𝗲 𝗱𝗲𝘀𝗶𝗴𝗻𝗲𝗱 𝗮𝗻𝗱 𝗿𝗲𝗹𝗲𝗮𝘀𝗲𝗱 𝘁𝗼 𝘁𝗵𝗲 𝗺𝗮𝗿𝗸𝗲𝘁: - Set top box/Smart box: Using Amlogic's chipset, with DDR3/4-RAM and eMMC 32GB, Wi-Fi b/g/n/ac & Bluetooth 5.0, HDMI 2.0, USB 2.0/3.0, Optical Audio - Personal Computer: Intel chipset 7th, 4x slot DDR4-RAM, M.2 PCIe x4, PCIe x1 x4 x16 slot card, Peripherals HDMI, Display port, USB, Audio, Ethernet - Home IP Camera: Using Realtek' chipset, with DDR3/4-RAM, livestream via Ethernet and Wi-Fi, 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, Wi-Fi, Zigbee and TFT LCD, ... Design Smart Switch with capacitive touch, Zigbee communication, Single Phase Power Meter, 220VAC/110VAC load control, ... I have also worked with smart home providers like Tuya, Konke, Edgad... - Smart side product: The set of devices has the function of monitoring the Base Transceiver Station, giving warnings to the server. Using STM32/STM8 chipset, there are current and voltage measurement blocks, battery system management, control and monitor sensors: Temperature, humidity, smoke, fire… I make good use of PCB design software: Altium, Cadence Orcad, Mentor graphics PADS I hope to work with you, to help you complete your project and release your product to the market.

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. 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/RK3588S, RK3568, RV1126, Allwinner, Zynq-7010, Zynq7020, XCZU9EG - 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.