Hire the Best Hardware Prototyping Specialists
in India

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!

I design high-performance, production-ready PCBs for automotive, medical, and industrial applications. ✔ 15+ years experience | 4000+ PCB designs delivered ✔ High-speed design: PCIe, DDR4, eMMC, MIPI, DSI ✔ RF design up to 20 GHz (Rogers RO4350B) ✔ Power electronics: Buck, Boost, Flyback, SEPIC, CUK ✔ Multi-layer boards (up to 10 layers) with impedance control ✔ High-voltage designs up to 4kV Tools: Altium Designer | KiCad | EAGLE (Fusion) Industries: Automotive (AEC standards) | Medical (FDA-aware design) | Consumer electronics What you get: -Clean, manufacturable PCB layouts -Signal integrity + impedance-controlled routing -EMI/EMC-aware design approach -Ready-for-production deliverables Recent work includes: -DDR4 + PCIe high-speed board with impedance control -20 GHz RF PCB on Rogers material -Industrial high-voltage control system (>4kV) -Motor driver systems (BLDC, servo, brushed) If your project requires reliable, high-speed or high-power PCB design, I can deliver proven solutions.

I help startups, inventors, and product teams turn electronic product ideas into robust, reliable, rugged production-ready hardware. 100% Job Score| 11+ years in electronics development | Top Rated Plus | 500+ assignments | 11,000+ Upwork hours | PCB experience up to 32 layers | IPC-certified PCB capability Idea → Architecture → Circuit Design → PCB Development → Prototype Bring-Up → Validation → Manufacturing Handover I am usually brought in when the hardware is commercially important, technically complex, or expensive to get wrong—whether that means converting a proof of concept into custom electronics, reviewing a design before fabrication, resolving an unstable prototype, or preparing a product for manufacturing. I provide end-to-end product-development support across architecture, electronics, PCB design, prototype validation, firmware coordination, enclosure integration, manufacturing preparation, and production support. Attention to detail is central to how I work. I review architecture, interfaces, power, component selection, grounding, thermal behaviour, RF performance, testability, compliance, sourcing, assembly, and manufacturing constraints before they become expensive physical problems. Clients typically engage me for: 1. Converting Arduino, STM32, ESP32, nRF52/nRF53, NXP, TI, i.MX, Raspberry Pi, other development-platform prototypes into custom electronics 2. Finalizing hardware architecture before major development expenditure 3. Developing complex analog, digital, power, RF, wireless, or mixed-signal hardware 4. Reviewing schematics and PCB layouts before fabrication or production release 5. Correcting noisy, unstable, thermally stressed, or unreliable designs 6. Adding senior electronics capacity to an internal product team 7. Preparing electronics for EMI/EMC testing and manufacturing Core areas of work ✅ Hardware Architecture and Feasibility: I evaluate system architecture, processing platforms, power requirements, interfaces, sensing, protection, component dependencies, enclosure constraints, and development risks before the design becomes expensive to change. ✅ Circuit and Advanced PCB Design: I work across analog, digital, power, RF, wireless, sensing, control, battery-operated, low-power, and mixed-signal electronics. My PCB experience includes up to 32 layers, controlled impedance, differential pairs, length matching, high-speed interfaces, blind and buried vias, HDI, advanced stackups, compact placement, high-current and high-voltage sections, signal and power integrity, grounding, thermal planning, antenna placement, RF keepouts, DFM, DFA, and DFT. Primary tools: Altium Designer, KiCad, EasyEDA, EAGLE, and Proteus. I also create schematic symbols, PCB footprints, and integrated 3D library data. ✅ PCB and Hardware Design Review: I assess circuit correctness, design margins, power-tree stability, protection, component suitability, lifecycle risk, placement, routing, return paths, thermal performance, EMI/EMC exposure, testability, DFM, DFA, DFT, and production readiness. Findings are prioritised by severity. ✅ Prototype Bring-Up and Testing: I maintain an equipped electronics laboratory for prototype bring-up, measurement, debugging, and validation. ✅ Design for Excellence: My process incorporates DFM, DFA, DFT, EMI/EMC-conscious design, component lifecycle planning, debug access, BOM awareness, and structured engineering reviews. ✅Relevant experience includes IoT, wearables, industrial and medical electronics, wireless systems, battery-powered products, automotive hardware, consumer electronics, and reverse engineering. Relevant hardware areas: 🏭 Industrial automation and monitoring 🏠 IoT and connected products ⌚ Wearable and compact electronics ⚕️ Medical and measurement-related electronics 🚗 Automotive and transportation hardware 📡 Wireless, RF, BLE, Wi-Fi, LoRa, and GNSS systems ⚡ Power management, battery systems, and high-current hardware 🛰️ Reverse engineering, design recovery, and product benchmarking ✅Direct accountability: I work directly with clients and remain involved in architecture, critical technical decisions, design reviews, and communication. PCB Must Innovations supports documentation, prototyping, sourcing, and manufacturing preparation through a structured process. No unexplained handoffs. No guesswork hidden behind design files. No disappearance after the first prototype. ✅Global availability: I support clients across the USA, UK, Europe, Australia, Canada, and other markets, with planned overlap for meetings, reviews, and handoffs across major time zones. I am best suited to commercially serious projects where reliability, performance, communication, and production readiness matter more than the lowest initial quotation. Share your product objective, development stage, available files, main technical concern, expected quantities, enclosure constraints, and compliance requirements in the message section or book a call

Every hardware decision made today affects manufacturing cost, certification, battery life, reliability, and time to market. That's where I come in. I work with startups, R&D teams, and product companies to make the critical engineering decisions before they become expensive problems. Rather than simply drawing schematics or routing PCBs, I help design products that are manufacturable, reliable, scalable, and ready for real-world deployment. Whether you're building your first prototype or preparing for production, I can help you move faster with confidence. What I Bring to Your Project  Systems Thinking Before Schematic Design • Hardware architecture • Technical feasibility studies • Technology selection • Risk identification before development begins  Production-Ready Electronics • Analog, Digital & Mixed-Signal Design • High-Speed PCB Design (2–12 Layers) • Rigid, Flex & Rigid-Flex PCBs • Signal Integrity & Power Integrity • EMI/EMC-Oriented Layout Practices • DFM & DFT Optimization  Low-Power & Battery-Powered Systems • Battery Management • Charging Solutions • Fuel Gauging • Power Path Design • Ultra-Low Power Optimization • DC/DC & PMIC Design  Embedded & Connected Products • STM32 • Nordic nRF52 • ESP32 • Raspberry Pi • Microchip MCUs • Rokchip Processors • NXP Processors  Medical & Sensor Electronics • ECG • EMG • SpO₂ • Heart Rate • Temperature • Pressure Mapping • IMU Integration • Precision Analog Front Ends • Low-Noise Signal Conditioning My Engineering Philosophy I don't believe great hardware is built by selecting expensive components. Great hardware comes from making the right engineering trade-offs. Every recommendation I make balances: • Performance • Reliability • Cost • Manufacturability • Power Consumption • Product Lifetime • Supply Chain Availability • Future Scalability This approach helps reduce redesign cycles while making products easier to manufacture and maintain. What You Can Expect From our first conversation, I focus on understanding: • What you're building • Who will use it • Where it will operate • What constraints matter most Then I provide practical engineering solutions—not unnecessary complexity. You receive clear documentation throughout the project, making collaboration with firmware teams, mechanical engineers, manufacturers, and certification labs much smoother. Deliverables • Hardware Architecture • System Block Diagrams • Schematics • PCB Layout • Gerber Files • Pick & Place Files • Assembly Drawings • Bill of Materials (BOM) • 3D PCB Models • Component Libraries • Design Review Reports • Manufacturing Documentation • Prototype Bring-Up Support • Test Plans & Validation Documents Selected Projects • Precision Drug Delivery Device (Medical) • Bone Density Measurement System • EMG Wearable Diagnostic Device • Smart Health Monitoring Ring • Veterinary Health Monitoring Wearable • Maritime Emergency Alert System • IoT Smart Energy Monitoring Platform • Ultrasonic Fuel Monitoring System • Industrial PoE Switch • Precision Weighing Electronics • Robotics Control Electronics • Tablet, Laptop Motherboard • Carrier PCBs for SOCs Why Clients Hire Me • I think like a product architect—not just a PCB designer. • I identify design risks before they become manufacturing issues. • I communicate clearly with founders, engineers, and manufacturers. • I document every important engineering decision. • I care about long-term product reliability—not just completing the next milestone. • I stay involved until the hardware works as expected. Let's Build Something That Ships Whether you're validating a new idea, redesigning an existing product, or preparing for manufacturing, I'm ready to help. Send me a message with your concept, requirements, or even a rough sketch. We'll discuss the best technical approach and build hardware that's engineered for reliability from day one.

I am an embedded systems specialist with over 8 years of experience in developing software, firmware, and hardware solutions. I’ve successfully delivered 100+ projects that integrate cutting-edge functionalities—from multi-threading and AI-on-edge to seamless wireless connectivity. ------------------------------ Core Competencies: ➡️ Microcontrollers -- Proficient with TI, STM32, ESP32, ESP8266, Atmega, and a wide range of Arduino boards. ➡️ Frameworks -- Expertise in bare-metal programming, FreeRTOS, STM32Cube, ESP-IDF, Arduino, and PlatformIO. ➡️ Linux -- Experience developing on x86, ARM, and Raspberry Pi systems. ➡️ Electronics -- Skilled in sensor integration, display management, and PCB design. ➡️ Wireless Protocols -- Deep knowledge of Bluetooth Low Energy (BLE), WiFi, Xbee, Zigbee, ESP-Now, LoRa, low-frequency radio, and mesh networking solutions. ➡️ Wired Protocols -- Familiar with SPI, I2C, RS232, RS485, UART, CAN-Bus, and more. ➡️ UI Frameworks -- Proficient in creating graphical interfaces using bare-metal techniques, LVGL, and Qt QML. ➡️ Platform integration -- Experience integrating embedded systems with cloud platforms and IoT solutions such as AWS IoT, Azure, and ThingsBoard, utilizing MQTT, REST, and other gateway protocols. ------------------------------ Project Highlights: ✅ Real-Time Multi-Threading -- Implemented robust solutions using FreeRTOS. ✅ AI-on-Edge -- Integrated AI functionalities into constrained embedded environments. ✅ Wireless Connectivity -- Delivered projects with WiFi, BLE, LTE, LoRa, Zigbee and others. ✅ Advanced Networking -- Developed mesh networking solutions implemented over a variety of protocols like ESP-Now, Radio, BLE, XBee, etc. ✅ Power Management -- Utilized deep-sleep modes, watchdog timers, and ULP cores for energy efficiency. ✅ User Interfaces -- Designed intuitive touch interfaces and captive portals, often paired with companion mobile apps. ✅ Device Management -- Executed comprehensive device management strategies, including OTA updates, fault recovery, and remote monitoring. ------------------------------ What I Offer: 💾 Firmware Design: With 8+ years of coding expertise, I provide rapid and reliable firmware development tailored to your hardware. ☁️ Cloud Setup: I can setup your IoT Platform backend including Amazon AWS, Azure, and even open-source solutions like Thingsboard. ⚡ Hardware Engineering: From schematics and circuit design to component selection and PCB layout, I cover the entire hardware development lifecycle. 📱 GUI Integration: Specializing in embedded products with graphical user interfaces, I leverage LVGL and Qt to create user-friendly, visually appealing designs. ------------------------------ I am passionate about exploring new technologies and continuously expanding my expertise. While I may not know every technology off the bat, I commit to learning what’s needed—without charging for my learning time. I’d be delighted to discuss your ideas and explore how we can bring them to life. Best Regards, Ravi Kharb

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.