I will design embedded hardware systems firmware for arduino, esp32,stm32,nrf52 project

United Kingdom

I speak English

PCB wizard by day and firmware magician by night

Hi, I’m Haroldwilliams, a Circuit and PCB Design Specialist with a B.Sc. in Electronic Engineering and 12 years of hands-on experience developing real-world hardware that’s reliable, efficient, and pr...
About this Gig

Embedded Hardware & Firmware Development for Arduino, ESP32, STM32 & nRF52


Need a reliable embedded system that actually works?

I will design, develop, and program custom embedded hardware and firmware for Arduino, ESP32, STM32, and nRF52-based projects.


Whether you have a prototype, circuit idea, IoT concept, or a complete product requirement, I can help turn your idea into a functional embedded solution.



I can help you with:


  • Embedded hardware system design and development
  • Firmware development for Arduino, ESP32, STM32, and nRF52
  • Sensor and actuator integration
  • GPIO, ADC, PWM, UART, I2C, SPI, CAN, and other interfaces
  • Bluetooth/BLE and wireless communication
  • Wi-Fi and IoT applications
  • Motor and relay control
  • Battery-powered and low-power embedded systems
  • Communication between multiple microcontrollers
  • Hardware and firmware debugging
  • Prototype development and testing
  • Custom embedded solutions based on your requirements


Why work with me?


I focus on creating embedded systems that are reliable, efficient, maintainable, and practical for real-world applications. I can work with your existing hardware or help you select the right microcontroller and architecture

Platform:

ESP32

Sensors:

Temperature

•

Humidity

•

Accelerometer

•

Ultrasonic

•

Microphone

Expertise:

Firmware development

•

RTOS

•

Debugging

•

SoC optimization

Other Electronics Engineering Services I Offer