I deliver end-to-end hardware and firmware solutions, transforming concepts into production-ready products. Specializing in PCB design, embedded systems, and IoT development, I help clients build reliable electronics from schematic to mass production.
🔧 Core Expertisy
PCB Design & Hardware Engineering
• Tools:
Altium Designer, KiCad, EasyEDA and Eagle Cad
• Capabilities:
o Electronics circuit Schematics Desinging
o Rigid and flex PCBs
o Experience with flex/FPC PCBs, High Speed and high-current and RF layout
o EMI/ESD protection, ground plane optimization, RF shielding techniques
o BOM preparation and cost-effective component sourcing
o Reverse engineering of hardware/firmware for legacy or competing products
o In-house prototyping, testing, troubleshooting, and validation
• Microcontrollers:
o ESP32 (including S2, S3, C3 and all other variants)
o STM32 (F0/F1/F4 series)
o nRF52/nRF5340 (Nordic BLE SoCs)
o ATmega/ATtiny series (AVR family)
o Raspberry Pi (Zero, 3, 4, CM4)
• Communication Protocols:
o UART Communication
o I2C communication
o I2S communication
o SPI Communication
o Can Bus Communication
o Mod Bus Communication
o WIFI-Communication
o Bluetooth Communication
o RF Communications
• Wireless Hardware Skills:
o Cellular (GSM/LTE/NB-IoT): Quectel (e.g., EC200U, BG95), SIMCOM (e.g., SIM800, SIM7678SA, SIM7600) – applied in vehicle tracking systems with GPS and cloud integration.
o LoRa: EBYTE E22/E32 modules for motion tracking in local mesh networks up to 5KM.
o Wi-Fi/Bluetooth: Advanced development with ESP32 for WIFI-Meshing, Wi-Fi sniffing, BLE advertising, and geofencing applications.
o Optical Communication: Long-range MCU-to-MCU communication using modulated IR/LED systems for reliable data transfer in isolated environments.
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🧠 Sensor Integration & Interfaces
• Motion & Environmental:
o Accelerometers (LIS3DH, MPU6050), gyroscopes, and ultrasonic sensors for obstacle detection, fall detection, and gesture control.
o IR sensors, flame sensors, and ultrasonic modules for object detection and safety systems.
o Humidity, pressure, smoke, gas, and temperature sensor for environmental control.
• Biometric & Weight Measurement:
o Fingerprint modules (R502, AS608), optical pulse sensors (MAX30100/30102)
o Load cells with HX711 for weight measurement
• Optical communication:
o Light sensors, photoresistors, and optical data transmission between MCUs over long-range using custom protocols
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⚡ Power System Design
• Battery Management:
o Lithium-ion/polymer charging circuits with fuel gauges
o Low-power modes, deep sleep implementation, and wake-on-interrupt designs
o Priority-based power distribution for shared charging between multiple devices
• DC/DC Converters & Power Paths:
o Buck, boost, and buck-boost converters for 12,9V, 5V, 3.3V, and custom rails
o Reverse polarity protection, TVS diodes, inrush current limiting
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🔌 USB Hub Development
• USB 2.0 and 3.1 Hub Designs:
o High-speed routing with proper impedance matching
o Switchable data lines for host/device switching
o USB-PD charging with smart current limiting and role negotiation
o USB power control with load switches and fault detection
🧩 One-Stop Hardware Solution
I offer a complete hardware development service, including:
• Component selection and sourcing from trusted Chinese and global vendors
• BOM optimization for cost and lead time
• Ordering PCB & PCBA from vetted manufacturers with fast turnaround
• Testing, QA, and verification of assembled hardware
• Troubleshooting & field debugging
• Firmware reverse engineering and porting
________________________________________
If you're looking for a highly versatile embedded systems expert with hands-on experience in both firmware and hardware — from an idea to working Product — I'm ready to support your product from prototype to production.
Asad A.
Embedded Systems | Product Development | PCB Designing | CAD Enclosure
Rawalpindi, Pakistan
$25/hr$25 per hour4.9 (14) 29 jobs $7K+ total earnings
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.
Innovative Mechatronics Engineer with a passion for designing cutting-edge hardware solutions. Excels in tackling complex engineering challenges with precision and creativity.
I can offer:
⭐Product Development
⭐PCB Design
⭐PCB Manufacturing
⭐Fast Prototyping
⭐Hardware Integration
⭐Hardware Debugging
⭐Firmware Development
⭐Technical Documentation
I'm committed to bringing your ideas to life and delivering advanced solutions that push the boundaries of technology. Let's start turning your vision into reality and create groundbreaking innovations together!
I turn your hardware idea into a production-ready PCB-from schematic to layout, first time right.
I am a Hardware Design Engineer with 3 years of hands-on experience in PCB design and embedded systems, specializing in multilayer boards, mixed-signal design, and wireless electronics. I have designed real-world products from scratch including automotive body control hubs, wireless lighting modules, and IoT sensor boards and delivered them through the full cycle: schematic capture, stackup planning, layout, DFM review, and hardware validation.
What I design:
Multilayer PCBs (2–10 layer) with dedicated power and ground planes
Embedded systems based on ESP32, STM32, ATtiny, NORA-W106, Rockchip and similar MCUs
Wireless modules: NRF24L01, WiFi, Bluetooth, ESP-NOW
Automotive electronics: body control, lighting systems, CAN/signal interfaces
IoT and sensor boards: Camera, audio, IMU, haptic feedback integration
Power electronics: LDO regulators, buck converters, PDN design, protection circuits
Tools I work with:
Altium Designer | KiCad | EasyEDA
Signal integrity & EMI/EMC-aware layout practices
DFM, BOM optimization, and Gerber generation for manufacturing
Whether you need a simple 2-layer board or a complex multilayer mixed-signal design, I bring engineering precision and real-world manufacturing awareness to every project. I do not just draw schematics.
I engineer products that work.
I communicate clearly, deliver on time, and make sure you understand every design decision. No black boxes - just solid, well-documented engineering.
Let's talk about your project. Message me and I'll respond within 24 hours.
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