I will develop custom firmware for esp32, stm32, and embedded systems
Electronics Embedded Systems Engineer Custom PCB Design
About this Gig
Need an expert Embedded Systems Engineer to write robust, production-ready firmware for your hardware?
2 I specialize in writing clean, optimized C/C++ code that brings microcontrollers to life, ensuring seamless hardware-software integration.
Microcontrollers & Frameworks:
- ESP32 / ESP8266: Wi-Fi/Bluetooth IoT applications, AWS/Firebase cloud integration, OTA updates.
- STM32 (ARM Cortex): High-performance, bare-metal C or Free RTOS, precise timing.
- Arduino / Nordic (nRF): Rapid prototyping, low-power optimization for wearables.
Hardware & Protocol Expertise:
- Peripherals:** SPI, I2C, UART, ADC, DAC, PWM, Timers, Interrupts.
- Specialized Routing:** CAN Bus integration for automotive clusters, sensor front-ends for bioimpedance wearables.
What You Get:
* Fully commented, well-structured C/C++ source code.
* Compiled binary/hex files ready for flashing.
* Hardware wiring diagram / Pin mapping guide.
Please contact me before ordering to discuss your schematics and project scope!
Platform:
STM32
Sensors:
Temperature
•
Accelerometer
•
Microphone
My Portfolio
FAQ
1: Can you develop firmware if my custom PCB isn't manufactured yet?
Yes, absolutely. I can write and fully test the core logic, state machines, and peripheral communication using standard development boards (like an ESP32 DevKit or STM32 Nucleo/Discovery board). Once your hardware arrives, we can do a quick integration phase to map the final production pins.
2: Do you support RTOS or ultra-low-power optimization for wearables?
Yes. For complex systems, I implement FreeRTOS to manage multiple parallel tasks smoothly without lagging. If you are building a smart wearable or battery-operated IoT device, I write optimized code that utilizes deep-sleep states, hardware interrupts, and efficient polling to maximize your battery

