I will build and debug embedded firmware for esp32, arduino, and stm32

Embedded firmware and measurement systems, built or fixed by someone who does it for a living.

I bring up microcontroller firmware and the analog front ends around it. If you're fighting a board that won't talk, a sensor that reads wrong, or a measurement you can't trust, that's the job.

• Firmware on ESP32, STM32, Teensy, Arduino-class: drivers, state machines, MQTT/BLE/I2C/SPI/UART, clean bring-up
• Sensor integration and calibration, from raw ADC counts to a number you can defend
• Data acquisition: sampling, timing, channel skew, filtering, the parts that decide whether the number means anything
• Embedded C, Python tooling, KiCad schematic and PCB review

I start from the symptom and the evidence, not a guess, and I'll ask for logs, a schematic, or a photo. You get the fix and the reasoning, plus what to watch for next.

AI disclosure: I use AI tools to draft and speed up parts of the work. I review and approve every deliverable myself before it ships, and you're always dealing with me.

Message me with the part, the symptom, and what you've already tried.