I'm Leonardo, electronic engineer, Microcontroller programmer, especially Arduino, circuit designer I have vase experience of working with Raspberry pi (4,3,3B+), Arduino, ESP32, ESP8266, nRF52832, nRF52840, AWS, IoT, RF, Industrial Automation, Embedded Linux, Home Automation and Motor Control based projects. Vast experience of Python, Node js, Node-Red programming in Raspberry pi (and other Embedded Linux hardware). Full stack developer for raspberry pi related projects. Development and programming of nRF, BLE, LoRa, PCI, SPI, I2C, USB, Bluetooth, Serial, parallel and Ethernet based embedded systems. ========== Hardware Skills========== - Embedded Programming and Hardware Designing - Embedded Linux and C++ - PCB/Layout Designing - Schematic/Circuit Designing - ARM-Based Controllers, All Arduino's Boards - Worked on Arduino, Xbee, Raspberry Pi, Udoo Boards, Orange Pi Development. - Worked on Bluetooth, WiFi, and other RF Frequency Protocols. - Layout Software: Altium Designer, Eagle CAD, KiCAD, Proteus, etc. - Worked on MEMS / IMU Sensors. - GPS/GNSS Tracking. UMTS/GSM/LTE Designing. - RFID and Fingerprint Circuit Designing. - Designing Controller Boards - PCB Wiring. - 3D Step Model. SolidWorks and Fusion360 - Layout Designing. ========== Software Skills========== - Android App Development - Windows App Development - C# and C++ Working with me will help you to implement your idea and you will also get useful tips that can help you make your design more advanced and successful. If you want me to make your project successful, just send me an invitation for your project proposal and I'll be happy to work together. 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS🌟 ✅ TOP RATED: My reviews speak for themself. I have a 100% job succession and I can assure you, our project will be 100% successful as well. ✅ PERFORMANCE: I always exceed my client’s expectations. No matter what the task, I always bring to the table some extra ideas, which encourage my clients to work with me again. ✅ COMMUNICATION: I am fluent in English and have great communicational skills. My writing and speaking are clear and transparent. ✅ RESPONSIVENESS: I am always available for my clients and give them regular feedback on the progress. I would almost without exception update you at least once a day on the status of our project.

Hi, my name is Dmytro. I have over a decade of experience designing electronic products related to analog, digital, embedded MCU and firmware, power supplies and more. I accurately quote and finish projects, following through with promised contracts. Focused on PCB Design/Layout and component selection. Also on the preparation of a PCB for production. My skills: - Altium Designer - Developing electronic circuit diagrams - Developing printed circuit boards ( PCB ) - Programming microcontrollers ARM STM32 - Developing devices for GPS navigation If you have any questions please send me a note, thank you.

PROFESSIONAL PROFILE I am an enthusiastic and dedicated professional with extensive experience across many areas of embedded software and electronics engineering. Can quickly grasp new ideas and concepts, and to develop innovative and creative solutions to problems. Able to work well on his own initiative or as a team player and can demonstrate the high levels of motivation required to meet tight deadlines. Able to perform under significant pressure, and possesses front line experience in working with customers effectively. CAREER SUMMARY I worked as an Electronics Design Engineer (HW/SW) between Sept ‘87 and July ‘95. After that I became more specialised as a Software engineer between August 1995 to April 2023, mainly real-time embedded software design, RTOS, BT, BLE, and Embedded Linux. I am currently working on the design and development of a Thai Language Android application for mobile phones and in the process of publishing it on Google Play. I also started working as PHP web developer. See: island-techology.com

Zero-Axis Technology – Your Partner for Intelligent Embedded, IoT & AI Development At Zero-Axis Technology, we deliver high-performance engineering solutions in embedded systems, IoT, AI/ML, FPGA, and software development. From early-stage startups to global enterprises, we accelerate innovative product development across Europe, the USA, and beyond. Technical Expertise Embedded Systems & Firmware Languages: C, C++, Python, Java, MATLAB, Verilog Microcontrollers: STM, Renesas, nRF, TI, Microchip, Silicon Labs, ARM, RM57 RTOS: RT-Thread, TI-RTOS, Zephyr, FreeRTOS, Embedded RTOS OS & FPGA: PetaLinux, Embedded Linux, Zynq-7045, Spartan-6 FPGA, AXI Interfaces: I2S, I2C, SPI, UART, CAN, RS485/RS232, HART, DPRAM, SDRAM IoT & Wireless Protocols: Zigbee, LoRa, Bluetooth, UWB, Cellular, IR, NFC End-to-End: Sensor integration to secure cloud connectivity Smart Device Development & IoT Security AI, ML & Voice Technologies LLMs & Agentic AI: LangChain, LangGraph, RAG, Multi-Agent Orchestration, Intent Detection Speech: Text-to-Speech (Piper, StyleTTS2, Kokoro, Google TTS, ElevenLabs), Speech-to-Text (Whisper) NLP & NLU with contextual reasoning, data preprocessing, model parameterization Software Engineering & DevOps Architectures: Multithreading, Client-Server, SHM, RESTful APIs, RTP/SRTP Design: OOP, STL, Design Patterns, Microservices CI/CD & DevOps: Git, GitLab, Bitbucket, Docker, Jenkins, SonarQube Hardware & PCB PCB Design: Multi-layer, high-density, high-speed systems Custom Hardware Design & Prototyping 3D Designing Debugging & Profiling Tools: GDB, Valgrind, Address Sanitizer (Asan), Thread Sanitizer (TSan), Logic Analyzer Development Tools & IDEs Keil, CCS (Code Composer Studio), Xilinx Vivado/ISE, MATLAB, Atmel Studio, VS Code Project Management & Collaboration JIRA, Confluence, Agile/Scrum Let’s Build Together

I'm Embedded software engineer experienced in developing firmware for RTOS and bare-metal applications.I have worked with various microcontrollers and work on hardware as well as emulating environment. I can help with : Firmware development using ESP32, STM32, Arduino and nrf microcontrollers Manage build system using make and CMake Integration of sensors, communication protocols (UART, I2C, SPI, BLE ,HTTPS, MQTT, Wifi etc) Programming using C,C++ and Python

I am an Embedded Systems and PCB Design Engineer specializing in firmware development, electronics design, and IoT product development. I help companies and startups build reliable embedded products by combining hardware design, embedded software, and device connectivity. From concept and prototyping to firmware development and PCB design, I provide practical engineering solutions focused on performance, stability, and maintainability. My expertise includes: - Embedded firmware development using C/C++ - STM32, ESP32, and microcontroller-based system development - PCB design and schematic development - Circuit design, component selection, and hardware optimization - Sensor, actuator, and peripheral integration - Communication protocols including I2C, SPI, UART, and CAN - IoT device development with Wi-Fi, Bluetooth, MQTT, and cloud connectivity - Hardware and firmware debugging - PCB design review and prototype support I can help with new embedded product development, firmware improvements, PCB revisions, hardware integration, and troubleshooting existing designs. I focus on clean engineering practices, clear communication, and delivering solutions that are ready for real-world applications.

Senior Embedded Linux Engineer | Linux Kernel | Yocto | BSP | Device Drivers | Embedded C/C++ I'm a Senior Embedded Linux Engineer with 5+ years of experience developing production-ready embedded systems for ARM-based platforms. My expertise includes Linux Kernel customization, BSP development, Yocto, U-Boot, Device Tree (DTS/DTB), Linux Device Drivers, Embedded C/C++, and Embedded Linux optimization. I have hands-on experience with NVIDIA Jetson (Orin NX/Nano), Rockchip RK3566/RK3568, Raspberry Pi, NXP i.MX6, Xilinx Zynq UltraScale+, QorIQ T1042, STM32, and ESP32. I specialize in board bring-up, kernel porting, bootloader customization, peripheral integration, fast boot optimization, and hardware debugging. Core Skills: Embedded Linux Linux Kernel Development BSP Development & Board Bring-Up Yocto Project & BitBake PetaLinux U-Boot Device Tree (DTS/DTBO) Linux Device Drivers (I2C, SPI, UART, GPIO, PCIe, USB) Embedded C/C++ Cross Compilation CMake & Make Boot Optimization ALSA, PulseAudio, PipeWire I help companies build reliable, high-performance embedded Linux systems—from custom hardware bring-up to production deployment—with clean, maintainable, and optimized code.

I have more than 11 years of experience in Embedded Firmware development and worked on various MCU from Nordic, Microchip, TI, Cypress and Linux SBC like Raspberry Pi. I have special interest in IOT space.

I am an experienced Embedded Design and Firmware Developer with over 10 years of hands-on experience in developing cutting-edge solutions for various microcontrollers and microprocessors. With a deep understanding of industry-standard peripherals, I have a proven track record of delivering innovative and robust products. Here are some of my notable projects that showcase my skills and experience: 5G RU Radio design: As a key member of a project team, I played a significant role in the design, development, and production of a 5G RU radio unit for one of my clients. My responsibilities included participating in system design, defining the architecture, optimizing the bill of materials, developing firmware, and creating a manufacturing test suite. To accomplish these tasks, I utilized advanced chipset such as Xilinx MPSoC and RFSoC, Intel Agilex, Stratrix, and Cyclone 10 across various product variants. Home Monitoring Device: I designed and developed the firmware and cross-platform GUI application for a home monitoring system using the CC3200 WiFi chipset. To ensure optimal performance, I utilized both TI RTOS and Micrium uC/OS RTOS. Fitness Wristband: I was a key contributor in the development of a fitness wristband that monitored step count and sleep cycle. This project utilized the CC2541 BLE chipset to run the fitness algorithms and handle data communication. AI-Based Heart Diagnosis Device: I designed and developed an AI-powered heart diagnosis device that was battery-operated and used heart sound for US clients. The device used the CC5545 DSP for audio sampling and enhancement, an OSD3358 chip for AI edge computing, and a panasys circular display to show the results. I also performed the bring-up of the OSD3358 in the latest Yocto and Kernel 5.8 support. Timestamp Logging Device: I developed a BLE-based timestamp logging device that used the CC2541 to monitor time and send data to nearby mobile devices. Mesh based sensor data collection: I developed a BLE mesh-based sensor data collection form where multiple ESP32-C3 devices collects sensor readings and broadcast in the mesh. Then eventually a central node will send the data to a server. In addition to these projects, I have also worked on several other microcontrollers and processors, including Phytec AM572x SoM, OMAPL138, Keystone K2E, AST2600, and nRF52, to name a few. I have also worked with several peripherals such as I2C, SPI, MCASP, I2S, USB, UART, uPP, EMAC, MDIO, NAND flash interface, EMIF, SDIO, and eMMC. In conclusion, I am a highly skilled Embedded Design and Firmware Developer with a wealth of experience in developing solutions for various microcontrollers and microprocessors. With a deep understanding of industry-standard peripherals and a passion for innovation, I am confident in my ability to deliver high-quality solutions for any project.

I am an enthusiastic, hands-on engineering professional with a proven track record of more than 14+ years in Embedded Systems, Electronics, Power Electronics, and POE-based systems. I have worked on micro-controllers starting from the Atmel 8051 and PIC18, and I have gone through complex systems like PIC32, ARM Cortex-M3, AVR Arduino and STM8 & STM32, etc. I delicately follow the design from concept sketching to bringing up the PCB boards and mechanical enclosures. I enjoy reading about technological developments and adapting to the changes to maintain my skills aligned with industrial standards. 1. Microcontrollers and Embedded Systems - ARM Cortex-M3 - Atmel 8051 Series, ATMEGA328P, ATMEGA32, ATMEGA2560, ATiny85, ATiny45 - PIC10F32X, PIC18f & PIC32 - NRF52840, NRF9160 - STM8, STM32F1, STM32F4 & STM32L1 Series 2. Embedded Firmware Development - MQTT, RPC, HTTP Calls - Serial Protocols, UART, I2C, SPI, 1-Wire, Ethernet, CAN, Fuel Gauges - Sensor Interfacing like Temp, Humidity, Motion, Liquid, Weight, GPS & more. - Arduino, mBed platform, Keil, Mikro C, MPLAB, Atmel Studio - Low Power Sleep Modes for Wearables & Low Power Designs 3. Electronics and PCB Design - PCB Designing using Altium Designer up to 6 Layers - Schematic & PCB Design, Design Reviews, BOMs, Manufacturer shortlisting - Placement Rules, Design Rules, DRC, Layer Stack-up, Reports Generation. - Feedback-based Buck-Boost High Power Design for LEDs Lightening - Low Power Design implementations using low-power components and Sleep Modes etc. 4. Mechanical Design Understanding - Working with Mechanical Engineers for Product Design Challenges - Understanding of 3D Printing, SLA Printing, PLA, PETG, ABS, TPU - 3D Printers debugging and troubleshooting, Ender, Creality 10s, Anycubic Photon 5. Raspberry Pi and Beaglebone Boards 6. RFID Systems - Hardware configurations, System Design & Application Development - Site Surveys and Deployment 7. Technical Proposal Writing - Complete System Level Details, Costing, and Procurement of equipment - System-level Block diagrams, Flow Charts, Network diagrams