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Recently I saw a cool project someone shared on the ESPHome Discord server that inspired me and I’ve decided that I’ll attempted to replicate it and build something similar. It was a LED matrix display based departure board connected to an Arduino that was displaying publicly available information about upcoming departures of the nearest public transport stop. Since I live in Prague where we happen to have a publicly available data where you can fetch live information about location of trams/buses/metro and their delays I thought it should be pretty much doable. The public transport APIs are available at Golemio API, you must register to get your API Key and then you’re good to go. The default rate-limit policies are pretty generous and completely sufficient for this home project. ...

This is just a note to future self on how I made the LaskaKit E-Paper Kit work with Home Assistant and ESPHome. Just a bit of context: The kit I got my hands on contains a E-Paper display and a custom ESP32-based board called ESPink which also comes pre-flashed with a custom firmware. You can build a firmware for this board yourself and the code is available in GitHub. However I wasn’t interested in running the board with this custom FW as I wanted to connect it with my local Home Assistant instance. ...

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