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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

What I actually do: Most freelancers just snap pre-built modules together and call it a day. I design systems from the bare copper up. I am a mechatronics and PCB designer specializing in bridging the gap between custom electronics, mechanical kinematics, and firmware. If you are stuck trying to get a prototype off a breadboard and into a functional, lab-ready product, that is exactly where I step in. Here is what I deliver: --Custom PCB Design (KiCad & EasyEDA): 4-layer routing, impedance matching, and strict DFM. I build mixed-signal boards and custom carrier boards, keeping noisy power lines isolated from your sensitive RF antennas. --3D CAD & Mechanical (Fusion 360): Parametric modeling, rigid enclosures, and complex kinematic joints. I don't just make it look good; I simulate moving parts and clearances to ensure it actually fits together in the real world. --Embedded Hardware: Integrating ESP32 controllers, motor control loops, IMUs, and complex sensors without the noise. Note: I specialize in embedded mechatronics, battery-powered robotics, and consumer electronics. I do not design 230V AC mains or industrial high-voltage power grids. Let's stop fighting with off-the-shelf parts that don't fit your project. Send me a message with your technical constraints, and let's engineer a real solution.

I help startups and companies transform ideas into production-ready electronics products. With experience spanning 𝟰𝟬+ 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝗮𝗰𝗿𝗼𝘀𝘀 𝟮𝟱+ 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀, I specialize in 𝗲𝗻𝗱-𝘁𝗼-𝗲𝗻𝗱 𝗲𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰𝘀 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 — from architecture and prototyping to manufacturing handoff. I operate a 𝗱𝗲𝗱𝗶𝗰𝗮𝘁𝗲𝗱 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗹𝗮𝗯 for rapid prototyping, bring-up, testing, debugging, and validation, enabling faster iterations and reduced development risk. Experience spans 𝗖𝗼𝗻𝘀𝘂𝗺𝗲𝗿 𝗘𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰𝘀, 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗮𝗹 𝗜𝗼𝗧, 𝗔𝘂𝘁𝗼𝗺𝗼𝘁𝗶𝘃𝗲, 𝗠𝗲𝗱𝗶𝗰𝗮𝗹 𝗗𝗲𝘃𝗶𝗰𝗲𝘀, 𝗗𝗲𝗳𝗲𝗻𝗰𝗲 𝗦𝘆𝘀𝘁𝗲𝗺𝘀, 𝗥𝗼𝗯𝗼𝘁𝗶𝗰𝘀, and 𝗘𝗺𝗯𝗲𝗱𝗱𝗲𝗱 𝗟𝗶𝗻𝘂𝘅 platforms. ━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗕𝘂𝗶𝗹𝗱 ✓ 𝗘𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰𝘀 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Product architecture and feasibility studies • End-to-end hardware development • Design for Manufacturing (DFM) and Design for Testing (DFT) • Prototype development and production handoff • Manufacturing documentation and vendor support ✓ 𝗣𝗖𝗕 𝗗𝗲𝘀𝗶𝗴𝗻 & 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 • Compact, manufacturable PCB designs • High-speed, low-power, and battery-powered systems • 1–6 layer rigid and flex PCB designs • Component selection and BOM optimization • EMI-conscious and reliability-focused designs • 3D PCB integration and enclosure collaboration Experience with: • Sensor interfaces • Display systems • Power electronics and battery-powered products • USB, CAN, RS-485, Modbus, UART, SPI, I²C, BLE, Wi-Fi, LTE, GPS, and custom protocols ✓ 𝗘𝗺𝗯𝗲𝗱𝗱𝗲𝗱 𝗙𝗶𝗿𝗺𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Development experience on: • STM32 • ESP32 • AVR • PIC • ARM Cortex-M platforms • Raspberry Pi • NVIDIA Jetson platforms Software expertise: • Embedded C/C++ • Python • MicroPython • FreeRTOS • Bare-metal development • PlatformIO • Keil • Linux application development Experience includes: • Device drivers • Real-time systems • Sensor fusion • Control algorithms • Data acquisition and processing • Wireless communication stacks ✓ 𝗘𝗺𝗯𝗲𝗱𝗱𝗲𝗱 𝗟𝗶𝗻𝘂𝘅 & 𝗦𝗕𝗖 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Custom carrier board development • Embedded Linux platform bring-up • BSP customization • Driver development • Linux application development • Raspberry Pi Compute Modules • NVIDIA Jetson platforms • Rockchip SoMs Recent projects include custom Linux-based multimedia systems, industrial automation platforms, and AI-enabled edge devices. ✓ 𝗜𝗼𝗧 & 𝗖𝗼𝗻𝗻𝗲𝗰𝘁𝗲𝗱 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝘀 • Industrial IoT systems • Edge-to-cloud architectures • BLE, Wi-Fi, LoRa, LTE, Zigbee, and GPS-enabled products • Secure device communication • Data collection and remote monitoring systems ━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗠𝗲 ✓ 𝟰𝟬+ 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗱 𝗮𝗰𝗿𝗼𝘀𝘀 𝗺𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝗶𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 ✓ 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝘀𝘂𝗽𝗽𝗼𝗿𝘁𝗶𝗻𝗴 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝗳𝗿𝗼𝗺 𝗰𝗼𝗻𝗰𝗲𝗽𝘁 𝘁𝗼 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 ✓ 𝗗𝗲𝗱𝗶𝗰𝗮𝘁𝗲𝗱 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗹𝗮𝗯 𝗳𝗼𝗿 𝗽𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗶𝗻𝗴 𝗮𝗻𝗱 𝘃𝗮𝗹𝗶𝗱𝗮𝘁𝗶𝗼𝗻 ✓ 𝗦𝘁𝗿𝗼𝗻𝗴 𝗵𝗮𝗿𝗱𝘄𝗮𝗿𝗲 + 𝗳𝗶𝗿𝗺𝘄𝗮𝗿𝗲 + 𝗟𝗶𝗻𝘂𝘅 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝘂𝗻𝗱𝗲𝗿 𝗼𝗻𝗲 𝗿𝗼𝗼𝗳 ✓ 𝗙𝗼𝗰𝘂𝘀 𝗼𝗻 𝗺𝗮𝗻𝘂𝗳𝗮𝗰𝘁𝘂𝗿𝗮𝗯𝗹𝗲, 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗿𝗲𝗮𝗱𝘆 𝗱𝗲𝘀𝗶𝗴𝗻𝘀 If you're building a new product, optimizing an existing design, or preparing for manufacturing, I'd be happy to discuss how I can help bring your product to market.

15+ Years Experience with more than 5000+ PCB design delivered. A Top Rated Plus freelancer with 100% Job success score. I help to develop stable, repeatable, manufacturable design for Startups, Individuals and product manufacturing teams. Following things are my expertise - -Schematic design and multi-layer PCB design in Eagle, KiCAD, Autodesk Fusion360, Altium and Easyeda. -Power Electronics in DC-DC, battery charging systems, PoE, Motor drivers, AC-DC converters - All ESP32 chipsets along with Rokchip, i.MX. RPI CM5, CM4, nRF52 series, STM32 and others - Compliance check like FDA, AEC for Automotive, Consumer Electronics RoHS, CE and FCC - High speed PCIE, DDR4, DDR5, CSI, MIPI, HDMI and display driver protocol. - Low power connected devices that runs on battery and requires extreme battery backup. - RF Boards having 2.4Ghz Bluetooth or WiFi to 20Ghz Doppler boards . - Have experience of very small micro devices that requires HDI stack up and different FAN OUT protocols for Microprocessors. I worked in Medical devices, Automotive Electronics designs, wearables and measurement RF devices. My design takes consideration of thermal behaviors, easy and trouble free Manufacturing support. Work wise - clear and steady communication, no disappearance after you make prototype. File delivery includes Design source file in all cases with Gerber, pick n place, BOM, 3D files. The BOM and Pick n place file generally done in a way that common manufacturer like JLCPCB or PCBWay will provide the PCB from single upload of my file which will be available at your doorstep. I also have own lab to support prototype bring ups and testing facility in my location from all over the world via Fedex and DHL channel. If you are looking for clear, straight forward person who can support you in all phases of product development and work flawlessly to design the hardware where you can concentrate in other aspect, Here I am. Do ping me for any issues.