Our earlier articles covered how a matrix keypad works and walked through its Keypad.h reading code; this project puts both to use in a small…
Our earlier DHT-and-ESP32 article put temperature and humidity readings on a web page; this project keeps things simpler and standalone, reading the…
A 16x2 character LCD is one of the most common displays in Arduino projects, and it can be wired up two very different ways depending on how many pins…
Wiring a 16x2 LCD fitted with an I2C backpack to ESP32 using just two wires, via the LiquidCrystal_I2C library.