My name is Ruhul Amin. I am presently employed as a Senior embedded engineer and Tech Lead at BJIT Ltd. Software Company. Throughout my career, I have undertaken various projects involving microcontrollers, microprocessors, SoCs, and more. With a focus on embedded systems, I’m a software engineer. Thanks to my passion and hard work, throughout of my career I’ve developed a strong foundation in Embedded, IoT, FPGA, DSP, Machine Learning, and Desktop Applications. With years of expertise, quick learning and analytic skills, and an enthusiasm for new technologies and challenges, I can provide the best system architectural design and efficient market implementation in a short amount of time. Specialized Skills: C, C++, Python, Verilog, Arduino, ESP32, STM32, nRF52, MSP430, ARM, FPGA, DSP, SoC, RTOS, Embedded Linux, Yocto, UART, SPI, I2C, CAN2.0B, Bluetooth, IoT, MQTT, TCP-IP, Wireshark, Audio-Video Signal Processing, Xilinx ISE, Code Composer Studio, Visual Studio, Oscilloscope, Git, Jira, Confluence, etc.

I'm a senior ai, app, IoT, electronic and embedded system engineer with aged experience in firmware development. I work across the full stack programming, from AI & App development to firmware implementation and system integration, with a strong focus on delivering reliable, efficient, real-world solutions. I have hands-on experience with both microcontrollers and embedded Linux systems and I'm comfortable debugging complex issues across hardware and firmware layers. My project background includes App development including AI, IoT devices, sensor systems, control systems. I can work and service in full time 7/24 so that give the wonderful result to my customers really.

I’m an Electronics & Electrical Engineer specializing in PCB design, circuit design, embedded systems, hardware development, simulation, and electronic product reverse engineering. I help startups, companies, researchers, and product developers turn ideas, prototypes, existing hardware, or incomplete designs into reliable, manufacturable, and production-ready electronic products. I work across the complete hardware development cycle — from circuit analysis and system architecture to schematic capture, PCB layout, prototyping, testing, debugging, reverse engineering, and manufacturing preparation. 🔧 PCB & Hardware Design • Schematic design and circuit development • 2–16+ layer PCB design • Analog, digital & mixed-signal electronics • High-speed PCB layout & controlled impedance • RF PCB layout & antenna integration • Power & signal integrity • EMI/EMC-aware design • DFM/DFA/DFT optimization • Component selection and BOM optimization • Gerber, BOM & Pick-and-Place/CPL generation • JLCPCB/manufacturing-ready design • PCB review, debugging and design validation PCB Tools: Altium Designer, KiCad, EasyEDA, Proteus 🔍 PCB & Electronics Reverse Engineering I can reverse engineer existing electronic products, PCBs, and prototypes to help you understand, document, reproduce, modify, or improve an existing design. My reverse-engineering workflow can include: • PCB inspection and component identification • Schematic recreation from an existing PCB • Component and IC identification • Net tracing and connectivity analysis • PCB layout reconstruction • BOM reconstruction • Datasheet-based circuit analysis • Connector and pinout identification • Power-supply and signal-path analysis • Functional block identification • Existing PCB design review • Design improvement and cost reduction • Reproduction/manufacturing preparation Whether you have an existing PCB without source files, an old schematic, Gerbers, photographs, or a manufactured prototype, I can help convert the available information into a structured and usable engineering design. ⚡ Circuit Design & Simulation I use simulation to verify circuits before committing to hardware and reduce unnecessary prototype iterations. Simulation experience includes: • LTspice • PSpice • MATLAB/Simulink • PLECS • Multisim • Proteus • CST Studio Suite I work with analog circuits, digital logic, power supplies, DC-DC converters, battery systems, motor control, sensor interfaces, signal conditioning, and mixed-signal systems. 💻 Embedded Systems & Firmware I also provide hardware–firmware integration using: • STM32 • ESP32 / ESP32-S3 / ESP32-C3 • Nordic nRF52 / nRF53 • AVR • PIC • ARM Cortex Embedded C/C++, Bare-Metal, FreeRTOS, drivers, bootloaders, sensor integration and communication interfaces. Protocols include: UART • SPI • I²C • CAN/CAN FD • USB • Ethernet • BLE • Wi-Fi • LoRa • MQTT • RS-232 • RS-485 • Modbus ⚙️ Power Electronics & Product Development I have experience with: • AC-DC & DC-DC converters • Battery charging and protection • BMS-related circuits • Motor controllers • Power management • Protection circuits • IoT devices • Industrial electronics • Automotive electronics • Robotics • RF/wireless hardware • Medical electronics • Consumer electronics 📦 Manufacturing & Production Support I don't stop at a working schematic. I focus on creating designs that can actually be manufactured. Deliverables can include: Schematic → PCB Layout → BOM → Gerbers → CPL/Pick-and-Place → Assembly Documentation → Prototype → Validation → Production Support I can also review existing manufacturing files and identify issues involving footprints, component availability, PCB fabrication, assembly, DFM, BOM, and JLCPCB/LCSC production requirements. Why Work With Me? ✔ Complete electronics hardware development ✔ PCB design and circuit engineering ✔ Existing PCB review and reverse engineering ✔ Simulation before prototyping ✔ Manufacturing-focused designs ✔ BOM and cost optimization ✔ Hardware/firmware integration ✔ Clear engineering documentation ✔ Practical approach to debugging and validation If you have a new electronics product, existing PCB, prototype that needs improvement, outdated design, or hardware that needs to be reverse engineered, I can help take it from the current state to a reliable and manufacturable solution. Send me your schematic, PCB files, Gerbers, photos, BOM, prototype details, or project requirements, and let's discuss the best engineering approach.

Specializing in LabVIEW, I also provide embedded and IoT solutions when projects require full system integration. I help hardware startups, industrial teams, and research labs build reliable test systems and connected IoT solutions — from data acquisition to real-time monitoring. My primary expertise is in LabVIEW-based test automation, including TestStand, DAQ systems, and hardware integration, used for validation, production testing, and R&D environments. Over the years, I’ve developed systems that: Automate complex testing workflows Improve measurement reliability and repeatability Reduce manual effort and testing time In addition to LabVIEW, I also work on embedded and IoT systems, allowing me to deliver complete, end-to-end solutions: 🔧 Core Capabilities LabVIEW & TestStand automation systems Data Acquisition (DAQ) and instrument control Embedded firmware (ESP32, STM32, Arduino) Sensor integration and real-time data processing Communication protocols (MQTT, TCP/IP, Serial) Web dashboards for device monitoring and control 🎯 What You Can Expect ✔ Clean, maintainable, and scalable solutions ✔ Stable real-time performance ✔ Clear technical documentation ✔ Strong understanding of both hardware and software Whether you need a LabVIEW automation system, embedded firmware, or a complete IoT solution with dashboard, I focus on building systems that are robust, production-ready, and easy to maintain. 📌 If your project involves hardware + software integration, I can help you design and deliver it end-to-end.

As an AOSP (Android Open Source Project) engineer, I specialize in designing, customizing, and optimizing Android platform for various devices. My role involves working with the Android framework, HAL (Hardware Abstraction Layer), kernel, and system-level components to deliver tailored solutions for device manufacturers and developers. I am passionate about building robust and innovative systems that enhance user experiences and contribute to the Android ecosystem.

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.

Telecommunications and Electronics Engineer. I am always in the customer's side, as Henry Ford said: "If there is any one secret of success, it lies in the ability to get other person's point of view and see things from that person's angle as well as from your own" I have knowledge in the areas of analog and digital electronics, PCB design, Arduino, microcontroller design, electronic automation systems, domotic, antenna design, programming, databases, web development, physics, mathematics, documents writing, etc. I have skills in computer aided design (CAD) such Proteus, Visual Studio Code, Matlab and Simulink, MMANA-GAL basic, Visual Studio, QT, WordPress, Xilinx Ise, Altera Quartus, Nextion Editor, and others like Auto Cad, Photoshop, Excel, Access, Word, etc. I am very responsible in my work and opened to dialog. I dedicate a lot of time to know every detail about needs of clients (every little detail is the most important for me). I am in favor that all terms are negotiable (time, requirements, budget, etc). Do not hesitate to contact me, as long as I am available and your needs fit my skills I will assist you.

I'm an Electrical and Power Electronics Engineer with over 15 years of hands-on experience in embedded systems, PCB design, SMPS, LED lighting, and industrial automation. My expertise spans microcontroller programming, PLC systems, CNC machine control, and the full development lifecycle of electronic devices - from concept to production and QA. Currently serving as the Quality Control consultant at an LED manufacturer, I've led initiatives that improved product durability, introduced rigorous testing protocols, and enhanced production reliability. I also bring a solid freelance background in custom electrical solutions, including smart home devices and high-precision CNC programming. Highlights: * Embedded systems & PCB design (AVR, SMPS, RF systems) * Industrial automation (PLC, CNC, Pick and Place) * LED drivers & lighting systems (custom testing tools, high/low PFC) * Mold design, aluminum extrusion, and mechanical integration

Passionate electrical engineer with my own lab. Deep knowledge of the electricity grid (I work in EV charging) and embedded systems. I have balanced the European grid by high speed (<2s response) control of 25,000 EV chargers in an operational setting with actual revenue. Could well be the largest European project to date. Highly interested (and rather skilled) in real time control by both microcontrollers and Linux based systems using either modern interface standards or legacy ones. Both a project manager as well as the developer. Very annoying tester (I noted the lab. Consists of good Keysight measurement equipment like oscilloscopes, vector signal generators, spectrum analyzer for high current grid work up to RF) Programming languages: C, C++, ARM assembly, Python, Lisp, Verilog. Embedded HW: stm32, Nordic, SiLabs, Esp32/Arduino and a bit of FPGA work. Technologies: gRPC, Bluetooth Low Energie, OCPP, Modus, ISO15118, IEEE1901, AWS, GCP Personal: I see myself in the basis as an engineer that builds things as well as an abstract mathematician. With all the positives that come with that combo, but I am still a normal communicator with a happy family. But I will only work on something that I understand up to the first principles. I enjoy people around me with the same mindset. Things can go really fast in that setting.

I've run 100+ person organizations including an MCI engineering team in the 80's and a small army of developers while I was CTO at Arthur Andersen's VLN division. I designed and manufactured most of Hydrofarm's Autopilot line of Ag Tech including upgrading their flagship Phantom lighting products and digital controls, and have designed and manufactured lighting and electronic controls for many others. I'm semi-retired now, but always looking for interesting and exciting projects, especially those requiring Asian manufacturing since I have a second home in Thailand. I’m comfortable in Altium designing circuits and laying out boards, coding in C, C++ and assembly on whatever the chosen chipset is from PICs to ARMs, ESP32, STM32, etc., and I manage and lead teams of coders and engineers better by being able to do what they do.