I’m a Full-Stack Embedded Engineer specializing in MCU-based hardware and firmware design. From circuit schematics and PCB layout to firmware development, debugging, and production support — I deliver reliable, manufacturable embedded systems. ⚙️ What I Do 🔹 Embedded Hardware Design MCU-based circuit design (STM32, ESP32, Arduino, etc.) PCB layout for compact, power-efficient, and production-ready boards Power supply design, analog/digital signal routing, EMC/EMI consideration Prototype validation and debugging with oscilloscopes, logic analyzers 🔹 Embedded Firmware Development Bare-metal and RTOS firmware (FreeRTOS, ESP-IDF, STM32 HAL, Arduino) Communication interfaces: UART, I2C, SPI, CAN, BLE, Wi-Fi Sensor and actuator integration (ADC/DAC, PWM, GPIO, I/O expansion) Bootloader, OTA update, and low-power optimization 🔹 System Integration & Debugging Hardware-software co-design and joint debugging Interface communication validation and timing optimization Peripheral driver tuning and performance profiling 🔹 Production & Manufacturing Support DFM/DFA optimization for stable mass production BOM cost-down and alternative component sourcing Coordination with PCB and assembly vendors Prototype-to-production transition and testing support 🎓 Background Master’s degree in Electrical Engineering 5+ years of hands-on experience with MCU-based embedded systems Projects across IoT devices, industrial controllers, consumer electronics, and medical prototypes 🚀 What You Get ✅ Custom schematics + PCB layout for MCU systems ✅ Firmware development + hardware integration ✅ Prototype debugging and functional testing ✅ DFM optimization + production coordination ✅ Full documentation and support to manufacturing Whether you need a custom MCU board, firmware integration, or help turning your prototype into a manufacturable product, I’ll make sure your system runs efficiently, reliably, and ready for production. 💬 Let’s discuss your project and make it real!

Greetings, Hope you are doing well. Are you looking to turn your electronic idea into a reliable, compact, and production-ready PCB? You’re in the right place. I help startups, product teams, and businesses design robust hardware that works in the real world — not just on paper. Why Choose Me? With 4+ years of hands-on experience in PCB design, firmware development, and prototyping, I’ve successfully delivered consumer, industrial, and IoT hardware projects from concept to working prototype and manufacturing. I understand both engineering fundamentals and production constraints, which helps reduce risk, cost, and redesign cycles. My core expertise includes: # PCB Design Tools EasyEDA/PRO, KiCad, DipTrace # Microcontrollers & Platforms ESP32 (S3, C3, C6), STM32, ATmega family & nRF series # Firmware & Programming Embedded C/C++, ESP-IDF, Arduino, HAL-based development # Low-Power & Compact Designs Battery-operated, wearable, and ultra-small form-factor PCBs # Wireless & IoT Systems Wi-Fi, BLE, GSM / LTE / 4G # Interfaces & Sensors I²C, UART, USART, SPI, RS485, RS232, CAN # Power Electronics Buck converters, LDOs, battery charging & protection, reverse-polarity and ESD protection What I Offer # End-to-End Hardware Development Schematic design, component selection, PCB layout, and design optimization # Firmware Development & Programming Peripheral drivers, sensor interfacing, communication stacks, power optimization # Full Prototype Support Board bring-up, debugging assistance, validation, and iteration support # Manufacturing-Ready Designs DFM/DFA-optimized layouts compatible with JLCPCB / PCBWay # Production Deliverables Gerbers, BOM (LCSC-preferred parts), Pick-and-Place, STEP files # Reliable Power & Protection Design Low-noise rails, battery optimization, and user-proof protection circuits Why Clients Love Working With Me I deliver clean, documented, and review-ready designs I support projects beyond just files — up to working prototypes I respect timelines and budgets I communicate clearly and proactively I focus on practical, manufacturable solutions If you’re looking for someone who can design the PCB, write the firmware, and support the prototype until it works, I’d be glad to collaborate. Let’s connect and build something reliable together.

I'm an Embedded Engineer with 10+ years of experience designing production-ready embedded hardware, RF systems, and multilayer PCBs for industrial, IoT, robotics, automotive, and consumer electronics products. I help startups and companies transform ideas into reliable prototypes and manufacturable products. My expertise covers the complete hardware development cycle, including system architecture, schematic capture, PCB layout, embedded firmware, prototype bring-up, testing, and manufacturing support. My expertise includes: • Embedded hardware design (ESP32, STM32, Nordic nRF, RP2040, NXP, Microchip) • RF PCB design (WiFi, BLE, LoRa, Zigbee, UWB, LTE/5G, GNSS) • Multilayer PCB layout (2 to 12+ layers) • High-speed interfaces (USB, Ethernet, PCIe, CAN/CAN-FD, MIPI, DDR) • Mixed-signal, analog, digital, and power electronics • Battery-powered and low-power embedded systems • EMC/EMI-aware PCB layout and signal integrity • Prototype bring-up, debugging, validation, and DFM review Design Tools • Altium Designer • KiCad • EasyEDA Pro • OrCAD / Allegro • Eagle CAD Firmware Development • C / C++ • ESP-IDF • STM32CubeIDE • FreeRTOS • Bootloader development • Peripheral drivers (SPI, I2C, UART, USB, CAN, Ethernet) I've developed custom hardware for wireless IoT devices, industrial automation, robotics, sensor platforms, wearable electronics, medical devices, battery-powered products, and edge AI systems. My designs prioritize reliability, manufacturability, and long-term product support. Whether you need a complete embedded system, RF PCB, hardware review, or manufacturing-ready design, I can support your project from concept through production with clear communication and practical engineering solutions.

Hi! I'm a computer engineer with a BS in Aero Eng from the University of Michigan. In addition to my aerospace background, I offer a strong background in software engineering and electrical engineering. My most recent experiences include embedded systems programming (CMSIS/STM32 & AVR), FPGAs, and radar data processing in Python with a focus in SAR techniques.

I design and develop embedded electronic devices, working across hardware and firmware from initial design to production-ready systems. I work end-to-end: from schematics and KiCad PCB layout to firmware bring-up, debugging, validation, and preparation for manufacturing. Platforms & systems: • ESP32, STM32, nRF52 • C / C++, ESP-IDF, FreeRTOS, Zephyr, bare-metal Wireless & device protocols: • Wi-Fi, Bluetooth LE, Thread, Matter / HomeKit • Sub-GHz RF (433 / 315 MHz), infrared Hardware & production: • Multilayer PCB design in KiCad (fab-ready files, realistic BOMs) • Hardware bring-up, debugging, and validation • Preparing designs for manufacturing and real-world use Mechanical & product design: • Functional enclosure and mechanical part design (Fusion 360) • Design for 3D printing and rapid prototyping • Mechanical integration of electronics into real products Why work with me: • Production-first mindset — not just working prototypes • Strong understanding of hardware–firmware interaction • Clear communication and realistic timelines If you’re building a device and need an engineer who can turn it into a reliable, production-ready product — let’s talk.

Electrical & Electronics engineer focused on embedded firmware and data-driven maintenance. I build reliable systems end-to-end: low-level C/C++ on ESP32/AVR, robust sensor acquisition (LM35, ACS712, AS5600), FreeRTOS drivers, and secure MQTT/WebSocket links into clean Python/Flask dashboards. Recent work includes an ATtiny13A multi-state timer, encoder-guided stepper control, and a predictive-maintenance stack where a CNN-LSTM model classifies motor faults with 95%+ accuracy and streams results to a web UI. I also prototype optimization and backend tools (e.g., PSO + MILP capacitor placement solver) and deliver fast, maintainable code with clear documentation and test hooks. Highlights • ESP32 firmware + React/Flask dashboards for live telemetry and anomaly alerts • ATtiny13A timing/IO control with EEPROM-backed parameters • Noise-hardened I²C (AS5600) and modular stepper control • ML pipeline for thermal-sequence motor fault detection (95%+) Stack C/C++ (AVR/ARM), FreeRTOS, Python (Flask, NumPy), MQTT/WebSockets, Chart.js, Atmel Studio/PlatformIO, Arduino IDE, Git; ML: TensorFlow/PyTorch; DB/Web: MySQL/PHP. I care about clean architecture, deterministic behavior, and deployable results whether it’s a tiny 8-bit controller or a full IoT-to-analytics pipeline.

I am AbdulJeleel, a Hardware Product Design Engineer with a background in Electrical Engineering and Electronics Engineering. I specialize in end-to-end hardware product development, helping startups, businesses, and engineering teams transform ideas into production-ready electronic products, from Electronic Design, PCB Design, Embedded System development, and Firmware Programming to complete enclosure and product integration. My expertise combines Mechanical Engineering, Hardware Design, Electronic Circuit Design, Circuit Design, Embedded Systems, Internet of Things (IoT), and 3D CAD product development to create scalable, manufacturable, and reliable hardware solutions. If you need someone who can handle both electronics and product design while understanding manufacturing realities, prototyping, and embedded firmware development, you’re in the right place. ⭐ What I Can Do For You 🔧 PCB Design & Electronic Circuit Design ⭐ Custom PCB Design (single-layer, double-layer, and multilayer PCB) ⭐ Schematic capture & Circuit Design optimization ⭐ High-speed PCB Design & signal integrity ⭐ EMI/EMC-aware routing & Low-Noise Circuit Design ⭐ Analog Electronics & Power Electronics ⭐ Gerber files, BOM, Pick & Place, assembly drawings ⭐ DFM (Design for Manufacturing) & DFA optimization ⭐ Electronic Design for manufacturable products Tools: ⭐ Altium Designer ⭐ KiCad ⭐ EasyEDA ⭐ Eagle CAD 💻 Embedded Systems & Firmware Development ⭐ Embedded System architecture & development ⭐ Embedded C & C++ Firmware Development ⭐ Firmware Programming for ESP32, STM32, Arduino & PIC ⭐ ESP32 WiFi & Bluetooth LE IoT development ⭐ Raspberry Pi integration & prototyping ⭐ Microcontroller Programming & driver development ⭐ Sensor integration using I2C, SPI, UART & CAN Bus ⭐ OTA updates, bootloaders & RTOS optimization ⭐ Wireless Communication systems & IoT connectivity 🧩 Product Design & Hardware Design ⭐ 3D CAD product design (SolidWorks / Fusion 360) ⭐ Mechanical Engineering integration with electronics ⭐ Electronic enclosure & casing design ⭐ PCB-to-enclosure integration ⭐ Prototype-ready & 3D-printable models ⭐ Injection molding-ready product design ⭐ Product visualization & 3D rendering ⚡ IoT & Embedded Hardware Product Development ⭐ Internet of Things (IoT) device development ⭐ Smart home & automation systems ⭐ Consumer electronics & embedded products ⭐ Robotics & motor control systems ⭐ Power Electronics (DC-DC, BMS, chargers) ⭐ Custom hardware for startups & MVP development ⭐ Embedded System solutions for industrial applications 🔬 Biomedical Engineering & Medical Device Development ⭐ Biomedical Engineering hardware solutions ⭐ Medical Device electronics & Embedded Systems ⭐ EMG (Electromyography) signal acquisition systems ⭐ Biopotential Signal Processing ⭐ Biosensing circuit development ⭐ Analog front-end & Low-Noise Circuit Design for medical applications 🔬 Prototyping, Testing & Manufacturing Support ⭐ Rapid prototyping & proof-of-concept development ⭐ PCB debugging & board bring-up ⭐ Simulation & validation testing ⭐ Manufacturing support (JLCPCB, PCBWay) ⭐ Component sourcing & cost optimization ⭐ Full production documentation & support ⭐ Industries I Serve ⭐ IoT & Smart Devices ⭐ Consumer Electronics ⭐ Industrial Automation ⭐ Robotics ⭐ Renewable Energy ⭐ Automotive Electronics ⭐ Smart Home Systems ⭐ Wearables ⭐ Medical Device Development 📦 What You Will Get ⭐ Complete PCB Design files (schematic + layout) ⭐ Gerber & manufacturing-ready files ⭐ BOM & Pick-and-Place files ⭐ 3D PCB & enclosure design ⭐ Firmware source code (Embedded C / C++) ⭐ Fully integrated Hardware Design solution ⭐ DFM/DFA optimized product design ⭐ Prototype support & testing ⭐ Technical documentation ⭐ Long-term support after delivery ⭐ Why Clients Work With Me ⭐ Full hardware product development experience ⭐ Clean, scalable & production-ready designs ⭐ Strong Embedded Systems & Firmware expertise ⭐ Reliable communication & fast response ⭐ Manufacturing-focused engineering approach ⭐ Long-term support for future product iterations Let’s Build Your Product I don’t just design circuits, I help build real, manufacturable products. Whether you need: ⭐ PCB Design ⭐ Embedded System development ⭐ Firmware Programming ⭐ ESP32 IoT solutions ⭐ Hardware Design ⭐ Medical Device electronics ⭐ OR complete product development (PCB + Firmware + Enclosure + Prototype) Send me a message and let’s bring your hardware idea to life. PCB Design PCB Designer PCB Layout PCB Engineer PCB Development Custom PCB Design Multilayer PCB Design High-Speed PCB Design RF PCB Design Analog PCB Design Digital PCB Design Mixed Signal PCB Power Supply PCB PCB Routing PCB Schematic Design Circuit Board Design PCB Manufacturing Files Gerber File Generation PCB Assembly Files PCB Prototype Design PCB Redesign PCB Optimization PCB Troubleshooting PCB Debugging Altium PCB Design KiCad PCB Design EasyEDA PCB Design Eagle PCB Design

A highly motivated individual more than 20 years experience designing embedded systems and programming state-of-the-art microcontrollers including STM, PIC, AVR, ESP32 and NRF SoC Series of microcontrollers. Programming of SBC's including RaspberryPi, OrangePi and BeagleBone Black. Design, simulation and debugging of complex embedded systems using SPI, I2C, CAN and RS485 communication for interfacing with a diverse range of sensors.

🥇TOP B2B Company according to Clutch (7+ Clutch awards in total)🥇 🏆The most experienced IoT and embedded systems development agency on Upwork according to a number of successfully completed projects in the industry🏆 🚀We helped 6 customers to raise more than $5,000,000 on Crowdfunding platforms in total ✅ Hello there! My name is Sergey and I'm a Business Development Manager at Integra Sources. My main goal is to provide you with our expertise, skills, and technical knowledge so that your project requirements and priorities are always met, and the project is delivered perfectly and just in time. If any questions arise - please feel free to touch base with me. ✅ Who we are? We founded Integra Sources with an idea to create things deemed impossible and we've been successfully doing that since 2014. Since then, Integra Sources has completed more than 100 projects making happy more than 40 clients. We are proud to have a 90% client retention rate. Currently 50+ employees. ✅ What do we do? Integra provides professional services in the areas of IoT, electronic design, embedded systems, kernel and driver development, system and application software development, computer vision, and robotics. ✅ Why choose us? - Reliable electronic design team - All kinds of embedded software development - Full-stack software development capability - Dedicated project management - Effective testing techniques - Expected delivery - Support and maintenance - Privacy security ✅ How do we cooperate? - Project-based outsourcing - Dedicated development team - Research & development - Technology consulting - Solutions for startups Because we serve the needs of different kinds of businesses, we offer a choice of different frameworks that define collaboration between us and our clients. ✅ Industries we work with • IoT/consumer devices • Smart Home • Wearables • Industry • Healthcare • Sports • Entertainment ✅ What services do we offer? ✅ Electronic Design: • Embedded hardware • Power electronics • PCB design and layout • FPGA design Platforms: • STMicroelectronics: - STM32F4 Series (STM32F401, STM32F405/415, STM32F407/417, STM32F410, STM32F412, STM32F412/423, STM32F427/237, STM32F429/439, STM32F446, STM32F469/479) - STM32F2 Series (STM32F2x5, STM32F2x7) - STM32F7 Series (STM32F7x0, STM32F7x2, STM32Fx3, STM32F7x5, STM32F7x6, STM32F7x7, STM32F7x9) - STM32H7 Series (STM32H723/733, STM32H725/735, STM32H730, STM32H742, STM32H743/753, STM32H745/755, STM32H747/757, STM32H750, STM32H7A3/7B3, STM32H7B0) - STM32F0 Series (STM32F0x0, STM32F0x1, STM32F0x2, STM32F0x8) - STM32F1 Series (STM32F100, STM32F101, STM32F102, STM32F103, STM32F105/107) - STM32F3 Series (STM32F301, STM32F302, STM32F303, STM32F334, STM32F373, STM32F3x8) • Nordic Semiconductor: - nRF51 (nRF51822, nRF51422, nRF51824, nRF51802) - nRF52 (nRF52840, nRF52833, nRF52832, nRF52820, nRF52811, nRF52810, nRF52805) - nRF52 (nRF5340) - nRF91 (nRF9160) • Microchip Technology/Atmel - PIC16 MCUs (PIC16F18446, PIC16F19197, PIC16F15386, PIC16F18346, PIC16F1779, PIC16F18877, PIC16F1619, PIC16F1709, PIC12F1572) - PIC18 MCUs (PIC18-Q41, PIC18-Q43, PIC18-Q10, PIC18-K83, PIC18-K42, PIC18-K40) - PIC32 MCUs (PIC32MK, PIC32MZ EF, PIC32MZ DA, PIC32MM, PIC32MX) - SAM MCUs (SAM C, SAM D, SAM E, SAM G, SAM L, SAM S, SAM V, SAM 4E, SAM 4L, SAM 4N, SAM4S) - AVR MCUs (tinyAVR, megaAVR, AVR XMEGA) - CEC MCUs (CEC1712, CEC1302, CRC1702) • NXP Semiconductors - iMX RT (iMX RT1170/RT1064/RT1060/RT1020/RT1015/RT1010) - iMX 8 (iMX 8/8M Plus/8M/8M Min/8M Nano/8X) - iMX 7 (iMX 7ULP/7Solo/7Dual) - iMX 6 (iMX6ULZ/6ULL/6UltraLite/6SLL/6SoloLite/6SoloX/6Solo/6DualLite/6Dual/6DualPlus/6Quad/6QuadPlus) • Allwinner Technology - Allwinner A Series (A20, A33, A40i, A50, A63, A64) - Allwinner H Series (H2, H3, H6, H80) • Texas Instruments - C2000 MCUs - Hercules MCUs - MSP430 MCUs - Sitara processors • Infineon - XMC Series - Aurix Series • Xilinx • Intel • Silicon Labs • Freescale Semiconductor • Silicon Labs • Espressif Systems ECAD software: • Altium Designer • Eagle Cad • Cadence Allegro • OrCAD • KiCad • P-CAD ✅ Embedded Software Development: • Firmware • Board Support Package (BSP) Tools: • Visual GDB • Eclipse • Keil • IAR • CrossWorks IDE • Simplicity Studio • Code Composer Studio • Atmel Studio • STM32CubeIDE Languages: • C/C++, Assembler Real-time OSs: • FreeRTOS • Zephyr • ThreadX • NuttX ✅ Kernel and Driver Development: • Windows • Linux • Mac • Android Driver types: • Kernel-mode • User-mode • Virtual device drivers ✅ System and Application Software Development: • Desktop, Web and Mobile applications • Middleware • Cloud/IoT Solutions • Machine Learning • Computer Vision (OpenCV, TensorFlow) Platforms: • Windows, Linux, Mac, Android, iOS Languages/Frameworks: • C/C++, Qt, Python, Java, Kotlin, JS, Objective-C, Swift, PHP, C# ✅ Robotic Development: • Flying drones • Robots on wheels • Autonomous movement Technologies: • RTOS, ROS, Linux, OpenCV, Visual SLAM

🚀 Top Rated Plus | ESP32 & STM32 Firmware Developer | Embedded Systems & IoT Engineer | 6+ Years Experience Looking for an experienced Embedded Firmware Developer who can turn your idea into a reliable, production-ready product? I'm a Top Rated Plus Embedded Systems & IoT Engineer with over 6 years of experience developing embedded firmware, designing custom hardware, and building IoT products for startups, SMBs, and enterprise clients worldwide. I specialize in: • ESP32 Firmware Development • STM32 Firmware Development • Embedded C & C++ • ESP-IDF • FreeRTOS • BLE • MQTT • IoT Product Development • PCB Design • LVGL • TouchGFX • AWS IoT I provide complete end-to-end engineering services, from hardware design and firmware development to cloud connectivity, GUI development, testing, and production support. ━━━━━━━━━━━━━━━━━━━━━━ WHY CLIENTS HIRE ME ━━━━━━━━━━━━━━━━━━━━━━ • Top Rated Plus Freelancer with a proven track record • Production-Ready Firmware • Clean, Maintainable & Well-Documented Code • Fast Communication & Daily Progress Updates • Strong Debugging & Problem Solving Skills • End-to-End Product Development • Long-Term Technical Support ━━━━━━━━━━━━━━━━━━━━━━ FIRMWARE DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━ Programming Languages • C • C++ • Python Expertise • Embedded Firmware Development • Bare-Metal Programming • FreeRTOS • Zephyr RTOS • ESP-IDF • STM32Cube • Arduino Framework • PlatformIO • Mbed OS • Bootloader Development • Secure Boot • OTA Firmware Updates • Device Driver Development • Memory Optimization • Low Power Design • Firmware Optimization ━━━━━━━━━━━━━━━━━━━━━━ MICROCONTROLLERS ━━━━━━━━━━━━━━━━━━━━━━ Espressif • ESP32 • ESP32-S2 • ESP32-S3 • ESP8266 STMicroelectronics • STM32F0 • STM32F1 • STM32F3 • STM32F4 • STM32H7 • STM32WB • STM32U5 Nordic • nRF51 • nRF52 Microchip • PIC12 • PIC16 • PIC18 • PIC24 • dsPIC30 • dsPIC33 • PIC32MX • PIC32MK • PIC32MZ ━━━━━━━━━━━━━━━━━━━━━━ COMMUNICATION PROTOCOLS ━━━━━━━━━━━━━━━━━━━━━━ • UART • USART • SPI • I²C • I²S • CAN Bus • USB (CDC, HID, DFU, MSC) • Ethernet • RS485 • Modbus RTU • Modbus TCP • OneWire • ADC • DAC • PWM • SD Card • SDMMC ━━━━━━━━━━━━━━━━━━━━━━ WIRELESS & CONNECTIVITY ━━━━━━━━━━━━━━━━━━━━━━ • Bluetooth Low Energy (BLE) • WiFi • MQTT • HTTPS • WebSockets • LoRa • LoRaWAN • Cellular (4G/5G) • Zigbee • Z-Wave Cellular Modems • SIM7600 • EC25 • EC200U • A7672 Series ━━━━━━━━━━━━━━━━━━━━━━ CLOUD & IoT ━━━━━━━━━━━━━━━━━━━━━━ • AWS IoT Core • Google Cloud • MQTT Brokers • REST APIs • HTTPS • WebSockets • Remote Device Management • Secure Device Provisioning • OTA Firmware Updates ━━━━━━━━━━━━━━━━━━━━━━ GUI DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━ • LVGL • TouchGFX • Qt for MCUs Experience • Animated User Interfaces • Touchscreen Applications • Dashboards • TFT Displays • OLED Displays • E-Ink Displays • Capacitive Touch • Resistive Touch ━━━━━━━━━━━━━━━━━━━━━━ HARDWARE & PCB DESIGN ━━━━━━━━━━━━━━━━━━━━━━ Tools • Altium Designer • KiCad Services • Schematic Design • PCB Layout • Prototype Development • Hardware Bring-up • Design for Manufacturing (DFM) • Production Support ━━━━━━━━━━━━━━━━━━━━━━ INDUSTRIES ━━━━━━━━━━━━━━━━━━━━━━ • Industrial Automation • Consumer Electronics • Medical Devices • IoT Products • Smart Home • EV & Automotive Electronics • Wireless Products • Energy Monitoring • Sensor Networks ━━━━━━━━━━━━━━━━━━━━━━ SERVICES I OFFER ━━━━━━━━━━━━━━━━━━━━━━ • ESP32 Firmware Development • STM32 Firmware Development • Embedded C/C++ Development • ESP-IDF Development • FreeRTOS Development • BLE Firmware Development • MQTT IoT Development • Device Driver Development • Bootloader Development • OTA Firmware Updates • PCB Design • Hardware Design • Embedded GUI Development • LVGL Development • TouchGFX Development • Cloud Integration • Firmware Debugging • Performance Optimization • Legacy Firmware Modernization • Complete IoT Product Development If you're looking for an ESP32 Firmware Developer, STM32 Firmware Developer, Embedded Systems Engineer, or IoT Firmware Expert who delivers reliable, production-ready solutions, I'd love to discuss your project. Let's build something amazing together! Best Regards, Haresh Sondagar Embedded Systems & IoT Engineer