Today I learned that WiFi and Bluetooth LE could NOT be used simultaneously on Arduino boards featuring the ESP32-based ...

Remember to always use the latest code version! Any previous versions may not work properly, although you can try to use them anyways if you'd like to. The newest version is "V2.1" found in releases.

The I2CKeyPad8x8 library implements the reading of a 8x8 keypad by means of a PCF8575. Smaller keypads, meaning less columns or rows (e.g. 5x4) can be read with it too. Sometimes you need to control ...