Specification: Battery: 2000 mAh Li-Ion 3.7v (converted to 5v internally) Processing: ESP32-S3-WROOM1 (currently not in use) , Uno (not mega) Interconnect circuitry: Just over a baker's dozen wires, ...

Arduino library for I2C LCD displays e.g. 20x4 . Contribute to RobTillaart/I2C_LCD development by creating an account on GitHub. ... Tested on an UNO and a 20x4 character LCD, and limited on a 16x2 ...

The pinout diagrams are simple, but they're easy to read, and especially helpful for beginners. You can print them out full size so you can set your Arduino Uno, ATMega, or ATTiny right on top for ...