About the Grove O₂ gas sensor

For less than 50€, you can get your hands on this tiny and easy to use sensor to monitor O₂ concentration up to 25%. https://www.seeedstudio.com/Grove-Oxygen-Sensor-ME2-O2-2-p-1541.html The problem is, the documentation is really crappy. After hours of searching and testing to find the actual working example…

Isolating I2C slaves

While developing for the IoT2040 from Siemens (see the product page), I was having difficulties with the I2C bus; specifically, some peripherals were slow to respond or somehow buggy and the bus was becoming unresponsive. On this device, the I2C bus is behind an extender, and it seems not very…

Starting with Yocto

I recently got to dive into the embedded Linux build systems world while working on a project where I needed to create a distribution for an embedded device with limited resources. Amongst the different options, I had identified two major tools : Buildroot and Yocto (See this fantastic talk by Alexandre…