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👋🏽 Greetings and thank you for stopping by! I am a driven and experienced Hardware and Embedded Software Engineer specializing in the Railway (EN 50155), Military, Automotive, and Industrial sectors. I offer end-to-end services within hardware/electronic design, circuit/schematics design, and integration of software/firmware from inception to final product, coupled with thorough testing. ✔️ 100% Job Success Score ✔️ Fluent English speaker ✔️ Swift and responsive ⚡ 🔍 Committed to crafting distributed, scalable, reliable, and low-latency devices and applications. 🔍 Equipped with exceptional communication and writing skills. 🔍 Proficient in collaborating with distributed teams of developers, designers, and multi-functional teams. 🔍 Offering flexible billing terms tailored to your project's needs! I am here to support you remotely in realizing your project aspirations. With a complete understanding of the product development lifecycle and a broad skill set, I am ready to tackle any challenge and bring your project to fruition. CORE SERVICES: • Circuit Designing and Analysis (Analog & Digital) • Schematics and PCB Development • Embedded Firmware & Software Development • Reverse Engineering & Protocol Decoding • Proof of Concept (PoC) Development & Prototyping • Manual and Automatic Testing KEY EXPERTISE: • PCB Layout: Controlled Impedance, High-Speed Signal Routing, Rigid-Flex Board Design, and RF Circuits. • Mixed Signal Circuits & Analog Circuit Design. • Schematics and Footprint Library Creation. • Firmware/Device Programming & Code Review. • Power Electronics: High-voltage DCDC converters, MPPT solar harvesting, and high-current motor actuation stages. • Compliance & Validation: Design for EMC/EMI, and EN 50155 / automotive standard compliance. PROJECT PORTFOLIO: Industrial, Military & Railway Equipment • Railway HVAC BLDC Controller: Developed an EN 50155-compliant motor controller with active power management. • High Voltage Power Distribution Box: Designed for an Anti-Terrorism Machine. • DC/DC Converter with Auxiliary Control: Designed for heavy mining machinery. • Undervoltage Protection PCB: Developed for remote-controlled industrial devices. • 5-Channel Proportional Valve Driver: Designed a closed-loop inductive load controller utilizing 14-bit current feedback. IoT, RF & Edge AI • Thermal AI Edge Node: Architected an industrial thermal camera unit (Raspberry Pi 5, FLIR Lepton) with dual telemetry (4G LTE/LoRa) and STM32 UPS battery management. • Dual-Brain Solar IoT Gateway: Designed an off-grid gateway with Altium hardware variants (STM32 LoRaWAN vs. Nordic BLE). • AI/UWB Smart Flashlight: Engineered a hybrid ESP32/Linux carrier board with UWB localization and 6-axis IMU sensing. • Ultra-Low-Power LoRaWAN Transceiver: Optimized STM32 and RAK3172 hardware/firmware to achieve a 2µA idle current. Automotive & Consumer Sector • Car OBD Diagnostics Tool: Designed hardware and diagnostic software; reverse-engineered raw CAN messages with GPS data integration. • Apple Watch Diagnostics Tool: Developed specialized testing and diagnostic hardware. TECHNICAL STACK & TOOLS: • Microcontrollers & Architectures: STM32, Cortex, ARM, ATMEL, Arduino, PIC18F (MPLAB), 8051, NXP, Nordic (nRF52), ESP32. • Firmware/Software: Embedded C, C++, Python, STM32CubeIDE, ESP-IDF, Arduino IDE, FreeRTOS, Zephyr. • PCB Layout & Simulation: Altium Designer, KiCAD, Proteus, Multisim. • Communication Protocols: USART, SPI, I2C, LIN, CAN, Ethernet. MODULES & PERIPHERAL INTEGRATION: • RTC (ds3231) • Ethernet (Wiz5500io) • WIFI & Wireless (ESP8266, LoRa) • Temperature & Environmental (LM35, ds18b20) • FTDI (Drivers) & IR-Sensors MECHANICAL DESIGN: • CAD Design & 3D Modeling • 3D Printing & Prototyping • Thermal Stress Analysis & Real-Time Simulations Feel free to reach out if you're interested in exploring how my expertise can contribute to your project's success! Let's build something exceptional together. TAGS: Electronics, Hardware, Firmware, PCB, PCB Layout, Board Layout, Schematics, Altium Designer, KiCAD, Proteus, IoT, Internet of Things, Power Electronics, DCDC, Motor Control, EN 50155, Bluetooth, BLE, Nordic, ESP32, TI, Texas Instruments, FPGA, SoC, Electrical Engineering, Verilog, Xilinx, C, C++, MCU, RTOS, Microcontroller, STM32, Prototype, Validation, Enclosures, BMS, SolidWorks, Android, Mobile Apps, AWS, Automotive CAN, LoRaWAN.

A self-driven individual with keen interest in electronics. I have 9 years of experience as a professional hardware engineer and over 20 years of experience as a hobby maker. Particularly interested in robotic motion control and integration of electronics and precision mechanics. My expertise can help you with hardware, PCB, and product design for a very competitive price. Please contact me for any additional questions. I can provied free 3D models for any electronics and enclosure integration. Experienced in: Circuit and PCB Design Product design 3D modeling and animation Design for mass production Circuit test and validation Embedded C programing (intermediate level) Electronics and mechanics integration Programs and tools: Altium Designer, Altium Cricuit Studio, Altium Circuit Maker, KiCad, Proteus, DesignSpark PCB, EasyEDA, Autodesk Fusion 360

I am an senior Hardware engineer with 8 years of expertise in designing, testing, and certifying products. With a strong background in PCB design and the successful management of various projects involving FPGA multi-layer, mix-signal designs, BLE and RF communications and small battery-optimized devices. But I have also designed PCBs that have USB and Ethernet connectivity, Power distribution and high-power control PCBs as well as audio (mix-signal) PCBs. I am confident in my ability to contribute effectively. Additionally, I have a well-equipped home workshop with tools for testing and small-scale production. If you are interested, I am available for a call to discuss requirements. Thank you Martin

I am a Professional Hardware Design Engineer designing complex multilayer PCBs. I am proficient in Altium designer and KiCAD with over 3 years of experience. I have a Master's degree in Computer Engineering. I have done projects from schematic designs to PCB designs and production files. I am ready to jump in and help with any part of electronics development process. I can also do STM32 code for test purposes. - PCB design for manufacturing - power filtering - complex boards with 8+ layers - analog and digital signal - Desing with MCU, FPGA - Creating footprints like BGAs - USB C Power Delivery