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I help medical and IoT product teams design the right hardware architecture early, so they avoid costly PCB re-spins, noise issues, and late-stage failures. If you’re building a sensor-heavy, STM32-based, or medical-adjacent product, I act as your hardware systems architect—focusing on design decisions, trade-offs, and long-term reliability, not just execution. How I typically help: • System architecture & feasibility studies • Component and topology selection (MCU, sensors, AFE, power) • Schematic-level hardware design & review • Pre-fabrication PCB audits to reduce redesign risk My work is decision-driven and outcome-focused. I start by understanding what you are building and why, then provide clear, documented recommendations you can confidently execute or manufacture. I’ve worked on medical electronics, bio signal front ends (ECG/EMG), wearables, and IoT devices, where design mistakes are expensive and timelines matter. If you’re looking for clarity, strong architecture, and fewer hardware surprises, I’d be glad to help. ✅ Core Expertise 🔹 Hardware Product Development - Architecture Design, Schematic & Layout (up to 12-layer PCBs) - Rigid, Rigid-Flex & Flex PCB Design - Signal & Power Integrity, EMI/EMC mitigation - DFM/DFT, FMEA, Risk Analysis, Certification Prep - BOM optimization, part lifecycle, obsolescence management 🔹 Sensor-Integrated Wearables & IoT - Real-time biometric sensing (ECG, EMG, HR, SpO2, Temp, IMU) - Wireless: BLE, Wi-Fi, LoRa, 4G, CAN, RS485 - Medical-grade signal acquisition & conditioning - Battery management, power efficiency & charging circuits 🔹 Prototyping & Compliance - Pre-compliance testing: EMI/EMC, Thermal, Vibration - Regulatory: Medical safety (IEC standards), ISO/NABL - Detailed documentation: test plans, architecture diagrams, handover packages 🔹 Tools & Platforms - ECAD: Altium Designer, OrCAD, CAM350, KiCAD - Firmware Platforms: STM32, Nordic nRF52, ESP32/8266, Microchip, Raspberry Pi - Protocols: I2C, UART, SPI, RS232/RS485, LVDS, RF, NFC ✅ Deliverables - Design Concept Block Diagrams - Process Flow Block Diagrams - Schematic PDF - Design Files (Schematic & Layout) - Fabrication Files - Assembly Files - Bill of Materials - 3D Models - Components Library - Test Documents (If req.) 🏆 Notable Projects & Solutions Built - Smart Drug Delivery Device: Precision-controlled insulin injector - Bone Density Meter: Early-diagnosis medical scanner - Julia Robot: Cooking automation system with embedded sensors - EMG Wearable: Portable diagnostic device for muscle activity monitoring - SOWBIT: Veterinary health monitor (ECG, SpO2, Temp) for livestock - Smart Ring: Measures multiple vitals via fingertip contact - Elite Alerte: Maritime emergency alert & sensing system - CloudSwitch: IoT-enabled wireless AC meter for remote energy tracking - Fuel Level Sensor (Ultrasonic + GSM): Real-time monitoring for containers - PoE Switch & Weighing Scale: Industrial-grade, high-precision electronics 🌍 Why Clients Choose Me ✅ Medical-grade design focus with regulatory foresight ✅ Deep cross-industry experience from wearables to industrial controls ✅ Excellent communication, proactive updates, and engineering documentation ✅ Efficient collaboration with global clients and vendors ✅ Quality-first mindset with long-term reliability and support

I am an electronics and firmware developer with experience in PCB design, firmware development, prototyping and SMD assembly. My journey started with hand crafting single sided PCBs — giving me a strong practical foundation from the ground up. PCB Design: 2 and 4 layer PCB design in KiCad 8,Kicad 9(Soon migrating to Kicad 10) & EasyEDA(Standard & Pro version) . Former EagleCAD user Schematic to manufacturing ready layout Custom footprint creation Gerber, drill, pick and place and BOM files Full submission support for JLCPCB(PCB & PCBA) and similar manufacturers Assembly & Prototyping: SMD soldering — 1206-0402 passives, QFN, TSSOP (except BGA) Through hole soldering Small batch prototype assembly Component procurement support Firmware & Connectivity: Microcontrollers — ESP32, ESP8266, Arduino, AVR, 8051 Cellular — Quectel EC25 & SIMCom SIM7672 with MQTT SSL/TLS Wireless — LoRa, WiFi, Bluetooth, GSM GPS — Ublox & Quectel module integration Displays — OLED, TFT, capacitive touch Protocols — I2C, SPI, UART, MQTT SSL/TLS, HTTP REST Motor drivers, WS2812 LED arrays, power circuits GPS- Quectel L89, Ublox M10S Special - WS2812 Led Projects include: GPS trackers, GSM security systems, water level controllers, , line followers, obstacle detection robots, WS2812 LED arrays and various ESP32 and Arduino IoT devices. I am a full time freelancer committed to clear communication and timely delivery — working with hobbyists, startups and commercial clients alike. Feel free to reach out!

💯 100% Job Success | 💲 $80K+ Earned | 70+ Projects Completed ✅ 10+ Years of Embedded Systems Experience ✅ Top Rated Freelancer on Upwork ✅ 100% Job Success Score ✅ $80K+ Earned | 2,600+ Hours Worked ✅ End-to-End Product Development Support ✅ Hardware + Firmware + IoT + Software Team Support I help startups, founders, and businesses design and develop reliable, cost-effective, and production-ready embedded products. My core expertise is in embedded hardware design, PCB design, and firmware development. Since 2013, I have worked on a wide range of products in industrial automation, IoT, wireless systems, energy products, smart devices, and consumer electronics. While hardware is my primary specialization, I also provide embedded software, mobile app, web dashboard, and backend development support through my team of engineers. This allows clients to work with one reliable partner for complete end-to-end product development. ✅ Why Clients Work With Me 10+ years of experience in embedded product development Strong expertise in hardware + firmware co-development Hands-on experience with production-ready PCB design Support from prototype stage to final product Clear communication and practical engineering approach Long-term project support and reliable execution ✅ Core Services Embedded hardware design Schematic design PCB design and layout Firmware development in C Board bring-up and debugging Wireless and IoT product development Prototype to production support Mobile and web applications for connected products ✅ Hardware & PCB Design Expertise 2-layer, 4-layer, and 6-layer PCB design Compact, low-cost, and manufacturable board design Analog and high-speed PCB design Hardware debugging and optimization Product redesign and cost optimization ✅ Embedded Systems & Firmware Expertise Worked with 8-bit, 16-bit, and 32-bit microcontrollers from: Texas Instruments Microchip / Atmel STMicroelectronics NXP Espressif Nordic Semiconductor Strong hands-on experience with: UART I2C SPI ADC / DAC RTC Timers MMC and related interfaces ✅ Wireless Technologies Bluetooth Low Energy (4.0 / 4.2 / 5) Wi-Fi Zigbee MiWi GSM (2G / 3G / 4G) GPS Sub-GHz RF ✅ End-to-End IoT Development Along with hardware and firmware, I also support complete IoT ecosystem development through my team, including: Android and iOS mobile apps Web dashboards Backend / server development Cloud-connected IoT systems ✅ Industries & Solutions I have worked on products related to: Industrial automation IoT and connected devices Smart agriculture Energy and power systems EV charging solutions Fuel / gas dispensing systems Consumer electronics Wireless embedded products Whether you need PCB design, embedded hardware, firmware development, wireless integration, or a complete IoT solution, I can help turn your idea into a reliable working product.

I am a PCB Design Engineer specializing in schematic design, PCB layout, and hardware debugging for real-world electronics systems. I can help you with: • Custom PCB design (KiCad / EasyEDA) • Schematic design from idea or rough concept • PCB layout (2-layer / 4-layer / 6-layer boards) • Circuit debugging and optimization • Component selection and BOM creation • ESP32 / Arduino / microcontroller-based system design I have hands-on experience building: • Wireless communication systems (LoRa, RF) • Sensor-based embedded systems • Battery-powered and low-power devices • Motor control systems with fail-safe mechanisms I focus on designing reliable, manufacturable, and cost-effective PCBs — not just visually clean layouts. I have also developed multiple patented systems in embedded and autonomous technologies, which reflects my approach to solving problems at a system level, not just at circuit level. If you need a working product, not just design files, I can help turn your idea into a reliable hardware solution.

I am an electronics engineer with a decade of experience in schematic design, PCB layout, and firmware development. After founding a successful tech startup in 2010, I am now seeking to expand my reach through online platforms. My company specializes in the design and development of customized consumer and industrial electronics projects, offering state-of-the-art solutions and dedicated computer systems. Over the years, we have successfully designed various systems, including data loggers, data monitors, data acquisition systems, data processors, process controllers, and IoT solutions tailored to our clients' specific needs. Our expertise spans microcontrollers, microprocessors, FPGAs, SoCs, and System-on-Modules (SoMs). We are also proficient in wireless technologies such as XBee, BLE 4.0, BLE 5.0, GSM, and LoRa. Services we offer: 1. Component Engineering 2. Schematics and PCB design 3. Firmware development 4. Prototypes and Mass production 5. Vendor Co-ordination Deliverables we provide include: 1. PDF Documentation: Schematics, PCB artwork, and 3D views of the PCB. 2. Source Files: Schematics and PCB files in Altium format. 3. 3D STEP File: A detailed representation of the PCB. 4. Gerber Files: For manufacturing. 5. NC Drill Files: For precise drilling specifications. 6. Bill of Materials (BOM): Compiled from verified vendors and suppliers such as Mouser, Digi-Key, and JLC, ensuring reliability and consistency over time. 7. Firmware/Software: Including codes and sketches tailored to your specifications. 8. Prototypes and Mass Production: Comprehensive support from concept to production. We prioritize compatibility with leading vendors like Mouser, Digi-Key, LCSC, and JLCPCB in our BOMs, facilitating a comparative analysis of available components and expediting the prototyping and mass production processes. Additionally, we ensure that selected components are stable and widely available, mitigating concerns about obsolescence or stock shortages. I look forward to the opportunity to collaborate and contribute to your project’s success.

100% Job success, 40+ Happy Clients all over the globe, look no more, A few client reviews: 💬 "Nagesh is THE BEST! I’ve worked with hundreds of freelancers, and all of them claim to be experts in their field or “the best”. Nagesh actually is one of the best I've ever worked with. He really went above and beyond to ensure the success of the project, and helped to improve things to a level I didn’t think was even possible. Will 1000% work with Nagesh again, one of the best on here. -- CEO @thoughtcastmagic 💬 "Nagesh has been extremely responsive and set clear, defined expectations from our conversation, then he smashed them by delivering faster than we had agreed and suggested modifications and options for future development of the product." ⚒ Key Services: ✅ Circuit and PCB design from scratch (Altium / EasyEDA /KiCAD) ✅ Circuit Simulation ( LTspice ) ✅ BOM optimisation ✅ Prototyping ✅ PCB mass production and assembly management ✅ Design consulting for reliable and Cost-effective electronic hardware Hello there! Being passionate about engineering since childhood helped me to learn and enjoy the electronics principles. Taking my bachelor's in electronics engineering made me pretty confident with my skills, and practically working with clients from all over the globe made me a preferred freelancer of many startups and companies. Since you are here, I have probably written you an engaging proposal for your job posting. I request you to message me so we can collectively discuss your queries and confusions, preferably over a call. I'd love to hear from you and help you get your idea into a manufacturable design that will make this world a better place to live in.