A bitcoin Lightning-Network Point of Sale terminal using the ESP32 based M5Stack Faces Development Kit. Included in the kit is a keypad and charging dock, making it an ideal candidate for an cheap($55)/easy DIY bitcoin point of sale terminal. https://m5stack.com/products/face
There are three implementations of M5StackSats, one that communicates directly with an LND node, and another that communicates with opennode (make an account here https://opennode.co/join/f774f2a0-1377-45e2-b719-6b821f24900d), and another that sits between the two projects using a neutrino LND node via Zap desktop wallet(https://docs.zaphq.io/docs-desktop-neutrino-connect).
Converting the project to communicate with c-lightning nodes/other custodial services should be easy.
Installing arduino + libraries
Install the Arduino IDE,
Install the ESP32 hardware,
From "Manage Libraries" install,
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