As a continuation of Puirume, this is a simple Platform IO project that demonstrates the peripheral input and output as said in the aformentioned document. It demonstrate a game, a simple blue pill red pill option selector, as shown in Figure 1. It utilise U8g2 library for interfacing with SDD1306 OLED display, KY040 library for interfacing with KY040 module, and State Machine library for state management.
Figure 1: Puirume demonstration.