I will write esp32 or esp8266 firmware for your sensor or relay project
Electronics designer for KiCad and Altium PCBs and ESP32 firmware
About this Gig
I'll write clear, working firmware for ESP32, ESP8266 and Arduino projects. Typical jobs: reading sensors and showing or sending the values, controlling relays and wall switches over Wi-Fi, MQTT and HTTP, web dashboards, phone-app control of a device, and reconnect handling so a Wi-Fi drop doesn't freeze the board.
I write embedded C++ and Python, and I build home-automation devices myself, including a 4-channel Wi-Fi board with its own phone app. I also publish 105 open build guides for Arduino, ESP32 and Raspberry Pi.
You get commented source code and a short note on how to flash it and change settings.
Not a fit: Bluetooth Low Energy products, battery-optimised designs, Zephyr, STM32 with an RTOS or 4G modems.
Platform:
ESP32
Expertise:
Firmware development
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Microcontrollers
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IoT
My Portfolio
Other Electronics Engineering Services I Offer
FAQ
Do you ship hardware or only write code?
Firmware and code only. You get commented source code and a short note on how to flash it and change settings. Send a photo or diagram of your wiring so I can write code that matches your hardware.
Can you build a Bluetooth or battery-powered product?
No. This gig is for Wi-Fi projects on ESP32, ESP8266 and Arduino: sensors, relays, MQTT and web dashboards. Bluetooth Low Energy products, battery-optimised designs, Zephyr, STM32 with an RTOS and 4G modems are outside what I take on.

