Microcontrollers on rawmeat.org

AHT20 update, and my open source experience

Fri, 20 Jun 2025 12:53:00 +0000

It’s been more than two years since I released my AHT20-driver (a Rust driver for a temperature and humidity sensor). I’ve had a lot of support and friendly interactions as a result, and I’d like to highlight what a pleasant experience it’s been.

The AHT20 sensor is a temperature and humidity sensor by the company Asair. I used the Adafruit AHT20 board during development. The driver is written in Rust, which I’ve come to really enjoy programming in.

AHT20 thermometer driver

Sun, 30 Jan 2022 00:39:00 +0000

I wrote a new driver for the AHT20 temperature and humidity sensor in Rust. This is a continuation of my Barometer build article, where I re-use the lps25_pressure_sensor_demo project to add a temperature sensor on the with_aht20_sensor branch.

I’m a complete novice at Rust and embedded programming. These projects are my attempts to learn more about both while having fun and making something useful.

You can find the driver at:

Barometer build

Sun, 26 Dec 2021 21:00:00 +0000

I put together a barometer, built around Adafruit’s LPS25 breakout board, the Blue Pill microcontroller, and a small 16x2 character LCD panel. It was a learning project, and all of it was written in Rust.

The finished project is a tangle of wires on a breadboard, and the error handling is minimal, but I definitely have a barometer with an LCD readout.

You can get the code in my lps25_pressure_sensor_demo github repo.