I've just connected a co2 sensor to my RGB keyboard.
The keyboard turns from green to red the worse the co2 concentration in the room gets, reminding me to ventilate the office from time to time.
It's amazing what you can do with just a little Arduino, some C++, Go & MQTT 🤓
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@fribbledom
Now I'm a bit envious that my ventilation does all that by itself without changing my keyboard color 🙃
