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English
$
USD
I will design pcb and develop embedded firmware, rtos, hardware integration, esp8266
United States
I speak English, German, French, Italian, Danish, Lithuanian, Turkish, Spanish
7 orders completed
Professional PCB Designer, KiCad, Altium, EasyEDA, Circuit and Schematic Expert
Hi, I’m Williams Wai, a PCB designer and electronics engineer with experience in PCB layout, circuit and schematic design, embedded systems, and IoT hardware. I’ve worked on Arduino, ESP32, STM32, and...
Level 1
Has met certain performance criteria and shows strong potential in the marketplace.
Highly Responsive
Known for exceptionally quick replies
About this Gig
Are you looking for a professional embedded systems engineer who can handle both hardware and firmware development for your IoT or electronic project?
I specialize in end-to-end embedded systems development, including PCB design, firmware programming, RTOS-based systems, and IoT hardware integration using ESP32, STM32, Arduino, and other microcontrollers.
Whether you're building a startup product, industrial device, or personal project, I can help you turn your idea into a fully functional embedded system.
My Service:
- Embedded firmware development (C/C++)
- RTOS-based system design (FreeRTOS and more)
- ESP32 / STM32 / Arduino programming
- PCB design (2-layer & multi-layer boards)
- IoT device development and integration
- BLE, WiFi, UART, SPI, I2C communication
- Sensor integration and debugging
- Circuit design and schematic development
- KiCad / Altium PCB projects
- Hardware prototyping and testing
Technologies I Use:
ESP32, STM32, Arduino, NRF52, Raspberry Pi, FreeRTOS, Embedded C/C++, IoT, BLE, WiFi, PCB Design, KiCad, Altium Designer, Sensor Systems, Hardware Prototyping
Let's Build Your Project
Please contact me before placing an order so we can discuss your requirements.
My Portfolio
Other Electronics Engineering Services I Offer
FAQ
What information do you need to start?
Please share your project idea, hardware details, required features and target microcontroller.
Which microcontrollers do you support?
I work with STM32, ESP32, AVR, ARM and many other microcontrollers.
Do you develop RTOS based firmware?
Yes, I develop embedded systems using RTOS such as FreeRTOS.
Can you work with existing hardware or code?
Yes, I can debug, upgrade or continue development on existing projects.
Do you help with hardware integration?
Yes, I support sensor integration, drivers and hardware bring-up.
Is your code production ready?
Yes, I focus on stable, clean and scalable embedded firmware.
