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…

HTTPS and no www with Nginx

I have tried to find the most efficient way to redirect all trafic for a specific domain to its https counterpart, and also to redirect to the domain without the www subdomain. I'm using Nginx in production and after combining various different solutions I found, I settled on this simple…

A sensible DeployerPHP config for Sf4

In my recent PHP projects, I tend to use Symfony 4, and Webpack Encore to build my assets. I find it to be a strong set of base tools for PHP apps. Webpack is a quite convenient way to build assets, widely used in the NodeJS world and for static…

Font Customiser for Adafruit's fontconvert

We love Adafruit. We love their products, libraries, their tools, ... well basically everything they do and share to the public. I've been using their Adafruit GFX library for a while now with every kind of display available on their shop : from the low-power Sharp to the SPI-enabled color TFTs, and…