Just reviewed the entire repo and read me’s. Excellent work, but have a few questions. First i’ll respond here.
What is your goal with the Pi server for this project? I assume it is purely to create a more efficient/reliable device correct? As the current set up does work with Arduino?
The pi Server will cut out the need entirely for a web server middle man? So essentially the new design would be
Mixpanel <----------> Raspberry Pi Node Server and DB <-------------> LCD
Also, does the Pi have wifi?
I am not really worried about any sound, as I see this being used on a desk. Thus, we wouldn’t want to annoy people with buzzing.