Hire the Best Raspberry Pi Developers
in the United States

Hello! I'm Patrick Cohen, a driven individual with years of hands-on hardware and software experience gained by working on embedded systems, IoT, and data analytics projects. I have worked with different microcontrollers, circuitry, and various modules. I have worked on projects that have included parts such as: Microcontrollers: - Esp32 (WiFi, BLE, IoT Cloud Services Integration) - NRF Nordic Semiconductor - Esp8266 (WiFi, IoT) - Arduino (Uno, Mega, Nano, Micro, Nano 33 BLE) Microcomputers: -Raspberry Pi -Jetson Nano -Jetson Xavier NX Additional Modules: -Adafruit RFM95W LoRa Radio Transceiver Breakout -HC-05 Bluetooth module -SH-HC-08 Bluetooth Low Energy module -GSM Cellular Module -NRF24L01 Wireless Transceiver -Ultrasonic sensor (Detect distance) -LM35 Temperature Sensor -RFID Wireless Card -Relay modules -Servos -DC Motors I have also worked on projects that contain the following functionalities: -Android application development to control Arduino circuit via Bluetooth and WiFi. -Analog circuits to control the level of power through the motor. -HBridge motor driver for opposite motor polarity (clockwise and counterclockwise rotation). -Solar-powered microcontroller projects that have implemented deep sleep code for prolonged operation.

With over 25 years in IT, I specialize in .NET, Azure, AI, Python, React Native, and embedded electronics (Arduino, ESP32, STM32, Raspberry Pi, KiCad). I’ve developed solutions for retail, hi-tech, manufacturing, and FMCG sectors, from startups to Fortune 500 companies. Named co-inventor/inventor on 15+ granted US patents, I bring technical expertise, managerial skills, and sales acumen. Skills: - IoT: Sensor integration, edge computing, cloud, firmware, software - Electronics: Hardware design, prototyping, PCB (KiCad), FCC certification, Arduino, ESP32, STM32, Raspberry Pi - AI/ML: PyTorch, TensorFlow, YOLO, OpenCV - Mobile Apps: iOS, Android (React Native) - Cloud: AWS, Azure - Web Development: Full-stack (C#, Python, jQuery, ASP.NET, Bootstrap) - Other: PowerPoint presentations, technical writing

AI can move a project forward fast. It can also create architecture nobody trusts, firmware that almost works, security holes no one noticed, ML models that don’t survive real data, and prototypes that fail the moment they touch real hardware. That is where I create the most value. I help founders, inventors, and technical teams use AI aggressively without letting AI-generated mistakes turn into expensive engineering debt. If you are already using ChatGPT, Claude, Cursor, Codex, Replit, Lovable, or other AI tools, but your project is getting stuck because the output is brittle, insecure, poorly specified, hard to validate, or disconnected from real-world constraints, I can help. Think of me as an AI engineering whisperer: someone who understands both the power of AI and the engineering realities that AI often misses. My strongest fit is not commodity implementation. If your project is fully specified and just needs code written, there are many lower-cost options on Upwork. My value is highest when the system is ambiguous, partially built, AI-generated, technically risky, or crossing the boundary between software, hardware, firmware, data, ML, and operations. I help answer questions like: ▸ Is this AI-generated architecture actually safe to build on? ▸ Will this prototype survive real users, real hardware, real timing, and real edge cases? ▸ Are there hidden security, reliability, integration, or model-validation risks? ▸ What should be rebuilt, what should be kept, and what should be tested first? ▸ How do we turn a promising AI-assisted prototype into a real engineering system? MY WORK TYPICALLY FALLS INTO FOUR AREAS: AI ENGINEERING RESCUE ▸ Review AI-generated code, architecture, workflows, and product plans ▸ Identify brittle assumptions, missing tests, security gaps, and failure modes ▸ Turn prototype chaos into a coherent technical path REAL-WORLD SYSTEM ARCHITECTURE ▸ Design systems that work beyond the demo ▸ Bridge AI, software, hardware, firmware, sensors, wireless links, and operations ▸ Translate unclear product ideas into buildable technical specifications APPLIED ML & DECISION SYSTEMS ▸ Build and validate machine-learning models for noisy, real-world decision environments ▸ Work with time-series data, feature engineering, model evaluation, and out-of-sample testing ▸ Identify leakage, overfitting, regime-change problems, and weak validation methods ▸ Develop ML systems where bad assumptions create real financial or operational consequences EMBEDDED, IOT & HARDWARE-AWARE DEVELOPMENT ▸ Firmware, PCB, sensor, wireless, and real-time system review ▸ STM32, ESP32, Raspberry Pi, BLE, cellular, IoT, industrial, and prototype systems ▸ Debug issues where software assumptions collide with hardware reality I have taken numerous products from concept to production, including embedded systems, IoT devices, industrial controls, data systems, automation tools, and AI-enabled workflows. I also build applied ML models for noisy, high-stakes decision environments, including financial market models that I use in my own trading. That work demands strict leakage control, disciplined feature engineering, out-of-sample validation, model-failure analysis, and constant attention to whether a signal is real or just noise. My background includes MSEE-level engineering training, decades of hands-on product development, and extensive practical use of LLMs, agentic AI workflows, and applied machine learning. Most AI consultants do not understand hardware. Most hardware engineers underuse AI. Most ML prototypes are not tested hard enough against real-world failure modes. I bridge those gaps. Best fit for: ▸ Founders building AI-assisted products ▸ Teams with prototypes that work in demos but not in the real world ▸ Companies using AI-generated code and needing review, hardening, or architecture cleanup ▸ Teams building ML, forecasting, automation, or decision-support systems ▸ Embedded, IoT, robotics, sensor, wireless, or firmware projects where AI alone is not enough ▸ Inventors who need a senior technical reality check before spending serious money The value I bring is practical technical judgment. I help you move faster without fooling yourself. A short review can often prevent weeks or months of wrong-direction development. Relevant technical areas: Embedded systems • AI/ML systems • LLM workflows • Agentic AI • System architecture • Applied machine learning • Time-series modeling • Forecasting • IoT • Firmware • PCB design • STM32 • ESP32 • Raspberry Pi • BLE • Cellular IoT • Real-time systems • Sensors • Wireless systems • Product development • Prototyping • Manufacturing readiness • Security review • Automation • Data pipelines • Python • C/C++

Embedded systems and industrial controls developer with hands-on experience across the full stack — from bare-metal firmware on STM32 microcontrollers to Linux systems, IoT connectivity, and desktop application development. I design and maintain mission-critical field hardware and software where reliability is non-negotiable. My work spans Raspberry Pi, ESP32, STM32, and Arduino platforms, integrating over SPI, UART, RS-232/RS-422, and satellite/cellular modems. I'm comfortable at every layer: PCB design, firmware, Linux system configuration, serial communication debugging, and the application software that ties it all together. I've shipped production hardware deployed in remote off-grid environments, diagnosed subtle hardware faults with an oscilloscope, and written the software that runs on top of it all. I also have experience modernizing legacy software — including a full .NET Framework to .NET 8 migration. I work well with messy, real-world systems — not just clean greenfield projects.

I am a Senior Embedded Systems Engineer with strong experience in firmware development, PCB design, IoT systems, embedded Linux, robotics, industrial automation, and edge AI. I help clients turn ideas into reliable products by handling the full development process from architecture and component selection to schematic design, PCB layout, firmware, testing, debugging, and production ready documentation. My core expertise includes: - Embedded Firmware: C/C++, STM32, ESP32, nRF52, RP2040, FreeRTOS, Zephyr, bare metal firmware - PCB & Hardware Design: KiCad, Altium, schematic design, PCB layout, BOM, Gerbers, DFM, debugging - Embedded Linux: Yocto, Buildroot, device tree, Linux drivers, bootloaders, system integration - IoT & Wireless: BLE, Wi-Fi, LoRa, Zigbee, MQTT, TCP/IP, OTA updates - Industrial & Automotive: CAN, CAN-FD, RS-485, Modbus, J1939, UDS, PLC/SCADA integration - Robotics & Control: motor control, BLDC/FOC, sensor fusion, real time control, ROS 2 - Edge AI: TinyML, TensorFlow Lite Micro, Edge Impulse, computer vision, sensor based AI - Desktop Tools: Qt/C++, Python automation, serial/CAN tools, test software, firmware update utilities - FPGA Support: Verilog/VHDL basics, FPGA integration, high speed data acquisition support I can support projects such as: - Custom IoT devices - Sensor based embedded products - Wearable electronics - Industrial controllers - Robotics systems - Automotive CAN devices - BLE/Wi-Fi connected products - Embedded Linux gateways - PCB redesign and hardware debugging - Firmware rescue and prototype bringup I focus on building systems that are reliable, testable, manufacturable, and easy to maintain. Whether you need a prototype, firmware fix, PCB redesign, or complete embedded product development, I can help move your project from concept to working hardware. Thank you for visiting my profile. If you're looking for an experienced Embedded AI & IoT Engineer who can help turn ideas into reliable products, I'd be happy to discuss your project. I look forward to working with you.

🧠 Embedded systems architecture 🟩 Custom PCB design (prototype through production) 💻 Firmware development (C, C++, Python, Assembly) 🏭 Industrial control systems ⚙️ Raspberry Pi, STM32, ESP32, Arduino, and ARM-based systems 🔄 Motion control (steppers, servos, motor drivers) 🖥️ Embedded Linux applications ⚡ Power electronics and battery-powered devices 🛠️ System debugging and prototype bring-up 📡 Communications (UART, SPI, I²C, CAN, Ethernet, Wi-Fi, BLE, Cellular) 📦 BOM development, component sourcing, manufacturing 🔍 Design reviews, troubleshooting Industry Experience: * Industrial automation * Commercial food & beverage equipment * Consumer electronics * Renewable energy * IoT and peripherals * University research * Robotics/motion control * Test, measurement, R&D, QA systems Embedded Systems | Product Development | PCB Design | Firmware | Industrial Automation I design embedded electronics that make it to manufacturing/production. 10+ years of experience routinely designing custom electronics, embedded firmware, and control systems. My work spans the whole product lifecycle—from early breadboard prototypes and proof-of-concepts to production-conscious hardware with designs for manufacturing and assembly. I enjoy solving engineering problems that don't have an off-the-shelf solution. My goal is to build something that's reliable and manufacturable for you, and to work on anything new and interesting for me. Recent work includes designing embedded control systems for commercial beverage equipment. It features custom PCBs, STM32-based HMIs, refrigerated dairy management, peristaltic pump control, industrial sensors, and Raspberry Pi & Arduino-based prototypes. Before that I was working on ultrasonic algae killers, and before that consumer appliances. Most of my experience deals with motor/sensor integration and hardware/firmware built around real world problems. How can we build a modular single-family EV charging station that can accept multiple possible power inputs? How does our UI drive user inputs? How can we control 14 types of sensor data in a way that drives our motors logically? From large-scale automated greenhouse systems to a fantastic automated beverage experience, it all boils down to hardware/software interactions. Many of my clients return for multiple prototype revisions and long-term product development because I strive to be more than a contractor—I aim to be a reliable engineering partner throughout the life of a project. My longest running current contract is over 2 years old. Good engineering is about more than making a prototype function. Every design decision should consider manufacturability, reliability, cost, long-term component availability, serviceability, and future scalability as early as possible. I enjoy collaborating with clients early and often in the design process to avoid expensive redesigns later. Whether you're starting with a sketch on a napkin, a breadboard prototype, or an existing design that needs refinement, I'd be happy to help bring your product to life.