ESP8266 ePaper WiFi Display Kit Runs for Months on a Charge
I'd love to put together a small E-paper display that I can stick on the door showing where I am or if I'm free/busy.3" display is enough for my need.Small LiPo battery works for my need.I can spend a few hours learning to program this thing with Arduino IDE or whichever tool is needed with a little bit of Internet handholding.But, >$50(incl shipping) kits don't give me the value I look for. Why are they so expensive?I'd happily buy a pre-made setup of (controller+LiPo battery+e-paper display) easy to program device if the price is < $30.