Driving Innovation in Embedded Systems & IoT | Expert Hardware & Firmware Solutions for Your Tech Vision Hello! I'm Nelson Fortunatti, a passionate and results-driven Electronics Engineer with a Specialist degree and I have completed the courses of the Master's in Embedded Systems (UBA). I transform complex technological challenges into tangible, market-ready solutions. My expertise spans the entire product lifecycle – from meticulous hardware (PCB) design and robust firmware development to seamless connectivity and system integration. With over 8 years in the Embedded Systems field, I've had the privilege of: Architecting & Deploying Large-Scale IoT Systems: I was instrumental in developing and maintaining an advanced farm irrigation system (ESP32, FreeRTOS/ESP-IDF, LoRaWAN/Cat-M1, MQTT, AWS IoT Core) with over 2,000 units successfully deployed across Australia. This involved managing a codebase exceeding 60,000 lines of C++ and ensuring robust FOTA updates. Designing High-Reliability Hardware: I've engineered sophisticated smart battery systems for demanding applications like scientific and military drones, capable of handling 150A continuous currents (e.g., 14-16s batteries with BQ34z100, BQ76952, DroneCAN). Developing Innovative Prototypes: My work includes creating novel wearable technology, such as a tick repellent device with microcontroller-activated reservoirs and smartphone connectivity. Creating Intuitive User Interfaces & Control Systems: I've designed complete control systems, like a Heat Pump Controller based on Raspberry Pi with a QT C++/QML capacitive touch interface. Fostering Academic & Commercial Innovation: At ITBA, I contributed to teaching, mentored final projects, and developed custom electronic and mechatronic devices for external companies. I offer expert consulting and development services to bring your electronic product vision to life. Whether you're at the conceptual stage, need a complex prototype, or are looking to scale for mass production, I provide: Full Product Lifecycle Development: From idea to production-ready design. Embedded Firmware & Software: Bare-metal, RTOS (FreeRTOS, ESP-IDF), Linux (Yocto, drivers), C/C++, Python. Custom Hardware & PCB Design: Analog/digital circuits, power electronics, DFM/DFA, using Altium, Kicad, Eagle, EasyEDA. IoT & Connectivity Solutions: LoRaWAN, Cat-M1, Wi-Fi, Bluetooth, MQTT, AWS IoT Core, Node-RED. System Integration & Testing: Ensuring all components work harmoniously. Why Partner With Me? Proven Track Record: Successfully delivered complex projects showcased in my portfolio https:// nelsonfort.github.io/ webPortfolio Holistic Approach: Deep understanding of hardware, firmware, and cloud interdependencies. Problem Solver: I thrive on technical challenges and finding innovative, efficient solutions. Detail-Oriented & Quality-Focused: Committed to delivering robust and reliable products. Bilingual: Fluent in English and Spanish for seamless collaboration. I'm always excited to discuss new projects, creative ideas, or opportunities to contribute to your vision. Let's connect and explore how we can build something extraordinary together! Technical Skillset Snapshot: Microcontrollers & Processors: STM32, ESP32, MSPM0G, Raspberry Pi (All variants), BeagleBone. Operating Systems & RTOS: Linux, Embedded Linux (Yocto), FreeRTOS, Bare-metal. Programming Languages: C, C++, Python, Assembly, JavaScript (Node.js), HTML. Frameworks: ESP-IDF, STM CUBE, Arduino. Hardware Design & Tools: Circuit Design (Analog, Digital, Power Electronics, Consumer Electronics). PCB Layout: Altium, Kicad, EasyEDA. Simulation: SPICE, Matlab, Simulink. Prototyping & Assembly (Manual, Hot-air, Pre heating station for SMD). Communication Protocols: UART, I2C, I2S, SPI, RS232, CAN, DroneCAN, Modbus, Ethernet. IoT & Cloud Technologies: Connectivity: LoRaWAN, Cat-M1, Wi-Fi, Bluetooth. Protocols & Platforms: MQTT, AWS IoT Core, Node-RED, ChirpStack. Software & Tools: QT (C++/QML), Git (GitHub, GitLab), Docker, Functional Testing. Data Formats: JSON.

I help startups and industrial teams transform concepts into production-ready electronic hardware. Drawing from my experience as a former Automation Engineer at Sharp Electronics, I understand the rigorous standards required for reliable mass manufacturing. Whether you need a custom microcontroller schematic (ESP32/STM32), complex multi-layer PCB routing, or DFM-compliant Gerber generation, I deliver robust boards designed for real-world environments. My Hardware Tech Stack: 1. PCB Design & EDA: KiCad, Schematic Capture, 3D PCB Rendering. 2. Embedded Systems: ESP32, STM32, Custom Microcontroller Board Design. 3. Design for Manufacturing (DFM): Differential pairs routing, thermal management (vias), rule area constraints, and component footprint creation. 4. System Integration: Motor drivers, sensor interfaces, and power delivery networks (PDN). I don't just connect pins; I ensure your hardware operates safely, efficiently, and is ready for automated factory assembly (PCBA).

With 3+ years of hands-on experience in embedded development, I deliver production-ready firmware and IoT infrastructure designed for stability, scalability and long-term maintainability. What clients can expect when working with me: - Clean, well-structured and maintainable embedded code - Reliable communication throughout the project lifecycle - Fast debugging and efficient problem solving - Scalable firmware architecture built for future expansion - Clear technical documentation and organized reporting - On-time delivery with attention to detail - Long-term technical support and troubleshooting assistance Technical Expertise: - Zephyr RTOS development - FreeRTOS development - Embedded firmware in C/C++ - nRF54, nRF52, STM32, ESP32, PIC, Arduino and Raspberry Pi - LoRa/LoRaWAN, BLE, WiFi, LTE, MQTT, TCP/IP, HTTP - UART, SPI, I2C, CAN, Modbus - Python and JavaScript for tooling, automation and integrations Services I Offer: - Custom embedded firmware development - Zephyr RTOS-based product development - FreeRTOS-based product development - LoRaWAN device and gateway integration - IoT backend deployment (ChirpStack, MQTT, Node-RED, ThingsBoard, Grafana) - Device monitoring and cloud connectivity - Driver development and hardware bring-up - System optimization and troubleshooting - Technical documentation and support Whether you need firmware for a new product, integration of IoT devices, or support scaling an existing system, I focus on delivering dependable solutions that work reliably in real-world environments. Let’s turn your idea into a robust connected product.

I help startups and companies turn their electronic ideas into working, manufacturable products — from concept to prototype and mass production. With 15+ years of experience and 50+ completed designs, I’ve delivered reliable, cost-optimized electronics for consumer, industrial, and IoT applications. What I offer: ✅ Electronic circuit design – analog/digital, power supply, and mixed-signal circuits ✅ PCB design & DFM optimization – multilayer PCBs, EMI/ESD, and manufacturing-ready layouts ✅ Embedded programming – STM32, ESP32, AVR 8-bits ATMEGA, ATTINY, dsPIC, MSP430, SAM32 ✅ Prototype development – soldering, testing, troubleshooting in my in-house lab ✅ IoT integration – Bluetooth, WiFi, RF, USB, RS232, SPI, I²C, ADC, 1-Wire, sensors, etc. Tools I use: Altium Designer, Kicad, Eagle, Orcad, STM32Cube Suite, Microchip Studio, VS Code, Platformio, LTSpice, Pspice, QSpice, MATLAB, Autodesk Inventor, SolidWorks, Comsol, Git. Why clients work with me: - Proven record designing hardware ready for mass production (worked with Taiwan/China OEMs). - Hands-on lab testing for fast iteration and validation. - Clear communication and focus on cost, reliability, and component availability. Let’s discuss your next prototype or PCB — I’ll help you move it from idea to production smoothly.

Experience in C/C++/C# Application: - 9+ years developing Desktop Applications/Embedded Software on Linux distributions. - Proficient in C/C++/Qt, problem solving skill, logical thinking. - Experience in Blockchain development. - Experience in Software Update. - Experience in developing IP camera and streaming solutions on Linux platform. - Experience in developing IoT for watch-over system on uT-Kernel platform. - Experience in developing Back End sever. - Experience with code refactoring techniques. - Experience with some security techniques. Experience in embedded domain: - 3+ years experiences on embedded systems(Bare-metal/RTOS) with ARM controllers from NXP like S32k, Nxp Kinetis M0/M4 microcontroller. - Experiences with different peripherals like DMA, SPI, I2C, GPIO, Clock, PWM, Input Capture,.. - Experiences with high-optimized code development for security ciphers on S32k, NXP Kinestis M0/M4. - Experiences with development of Autosar MCAL modules. - Experiences with development of bus like CAN, LIN, Flexray, Ethernet. Quickly adapt with new technology.

I am a software reverse engineer: * Are you interested in analysis of software (or device firmware) you don't have source code for? * Don't know how to extract your own data locked in a proprietary data format? * You want interoperability with a proprietary software or online service? * a vendor or supplier locks you to their overpriced closed source solution? * A company is out of business and you need to migrate or to live somehow without official support? Contact me. Requests for reverse engineering of firmwares for any kind of devices and software for all operating systems are welcome. Background: I am an High Performance Computing specialist ( keywords: "super computers" / "number crunching" ) working mostly with huge Linux systems and math related tasks. I am also a scientist specializing in linear algebra. I have somewhat outdated formal training in cryptography (and cryptography related math) but I am definitely not an expert in the field.

Dedicated Engineer and PCB designer with proven technical, communication and leadership skills seeking to apply my abilities in a progressive environment . Being a quick learner, I would love to work in a challenged environment with high levels of satisfaction.

I am a passionate engineer and programmer with hands-on experience in Embedded Systems, AI/ML, Robotics, Computer Vision and Electrical/Electronics. I love to solve problems, assist in projects through my dedication, hard work and perseverance. After 5 years of developing programs and implementing ideas across several platforms, I have developed the right skills that help me manage my time effectively, meeting deadlines yet enjoying good family life. My expertise are in _ML/AI Algorithms & Techniques _Robotics and Motion Planning Techniques _Computer Vision & Image processing __OpenCV in python and C/C++ __Image manipulation __Image Classification __Object Detection __Image Processing toolbox in MATLAB _Electronics and Embedded System Design __Circuit Simulations and Troubleshooting __Schematic and PCB design __ARDUINO Programming __BLE Firmware Development on nRF Chips I have vast experience in the development on different software like -Segger Embedded Studio -MATLAB -Visual Studio / Netbeans for C/C++ -Proteus / Multisim / Orcad -Altium / Eagle for PCB -Arduino IDE The top programming languages in which I am confident of my analytical and critical thinking skills are -Python -C/C++ -MATLAB I will be glad to assist you in your current and all future tasks if you are facing any kind of problem related to above mentioned areas or any type of troubleshooting or debugging of code as I love to have long future terms with my clients. Feel confident in hiring me and I will deliver you more than just needed with perfection. Thanks for your valuable time.

I'm an electronics and embedded system expert with 𝟭𝟮+ 𝘆𝗲𝗮𝗿𝘀 of experience, with focus on wearables, reliable electronics and IoT devices. I have developed (or managed development of) more than 𝟮𝟬 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 from concept to market. With my experience you can be sure of: 1. 𝗬𝗼𝘂𝗿 𝗽𝗿𝗼𝗱𝘂𝗰𝘁'𝘀 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹 𝘀𝘂𝗰𝗰𝗲𝘀𝘀 and a high quality of development. 2. 𝗥𝗲𝗱𝘂𝗰𝗲𝗱 𝘁𝗶𝗺𝗲 𝘁𝗼 𝗺𝗮𝗿𝗸𝗲𝘁 & 𝗰𝗼𝘀𝘁 𝗼𝘃𝗲𝗿𝗿𝘂𝗻𝘀 by avoiding the mistakes made by less-experienced developers. I will be your development partner from your idea to a certified and successfully selling hardware product. 𝗠𝘆 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝘁𝗶𝗲𝘀: ∙ Electronics and Embedded System Architecture ∙ Schematic Design and PCB Layout, IPC compliance, EMI/EMC , building certifiable hardware ∙ Microcontroller Programming (STM32, nRF, Zephyr, RTOS & more) ∙ Wireless Connectivity (Bluetooth, WiFi, NB-IoT, LTE & more) ∙ Sensors (GPS, IMUs, biomedical sensing, precision sensing & more) ∙ Low-Power Battery-Operated devices (optimizing for long battery life) ∙ IoT, Wearables, MedTech and Industrial Electronics 𝗬𝗼𝘂𝗿 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗢𝘂𝘁𝗰𝗼𝗺𝗲𝘀: ① Reduce Time to Market ② Unlock Revenue Faster 𝗪𝗵𝗼 𝗜 𝗛𝗲𝗹𝗽: If you are a 𝘀𝘁𝗮𝗿𝘁𝘂𝗽, an 𝗲𝗺𝗲𝗿𝗴𝗶𝗻𝗴 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗰𝗼𝗺𝗽𝗮𝗻𝘆 or a an 𝗲𝘀𝘁𝗮𝗯𝗹𝗶𝘀𝗵𝗲𝗱 𝘀𝗰𝗮𝗹𝗲-𝘂𝗽 looking to develop hardware with microcontrollers, wireless connectivity, and sensors, I am here to help. By focusing exclusively on these areas, I understand your technology, your needs, and your pain points better than others. My specialized approach allows me to standardize the development process, use advanced tools, and speed up development without sacrificing quality. I live in Berlin and have studied engineering in Germany. I am also a founder of a development agency, Oxeltech GmbH, where a team of developers helps me realize your goals.

Hello! My name is Manh, professional hardware engineer My job is 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 more than 7 years experience in design hardware for IoT Products, Consumer Products and Telecom Products. So I think i can try my best to complete your project with best result Below is my work flow in hardware design: - Receive your requirements, discuss to have final product/circuit specs - Design block diagram for circuit: need to very detail, it will decide what part will be used in project - Design schematics: follow block diagram to design schematic for product - Design PCB Layout: with requirement about Mechanical Design and Industrial Design, i will do the PCB Layout the fit with your MD that archive best performance - Extract production data: BOM, CAD, GERBER, DESIGN, ASSEMBLY GUIDELINE, IMPEDANCE CONTROL REQUIREMENTS, ... Something about my experience: - About microcontroller: STM32F0/F1/F2/F4/F7, MSP430, MSP432, ATMEGA, ATSAM, PIC, ... - About SoC and MPU: RK3399, Allwinner A10, RTS3902L/RTS3902, RTL8188/8192, ... - About dev board: Arduino, RPi, Teensy, ... - 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: WiFi, BLE4.0/4.1/4.0, Lora, Zigbee, Sub1GHz, ... - About GPRS/3G/LTE Module: SIM800C/H, SIM900A, SIM908, SIM5320, SIM5360, Quectel MC60/M95/UC15/UC20/EC20, Sierra HL8548, SIM7600E. - About highspeed PCB Design: DDR3/DDR4, SATA, 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 IP Camera and Home Gateway with very big quantity, so i will know how to design for manufacturing with your product, design mass production process, etc Some of my product that I have designed and released to the market: - Home IP Camera: using SoC with DDR3-RAM, livestream via Ethernet and WiFi, 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, WiFi, Zigbee and TFT LCD, ... Design Smart Switch with capacitive touch, Zigbee communication, Single Phase Power Meter, 220VAC/110VAC load control, ... - Tablet board: using RK3399 SoC, DDR3, eMMC, NAND Flash, Touch Screen, LTE Module, Printer driver, ... - Smart Water Meter: With BLE, WiFi, MCU from TI, LCD 7 Segment - Tracking Device: Using 3G with GPS, this device is used for personal tracking ... and a lot of other products ... I hope to work with you, to help you complete your project and release your product to the market