Arduino LCD I2C: Difference between revisions
From wikiluntti
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Hitachi HD44780 LCD controller | Hitachi HD44780 LCD controller, and I2C controller. 16X2 LCD without I2C circuit has sixteen pins. | ||
Potentiometer at the back side. Screw that to get the figures on screen. | Potentiometer at the back side. Screw that to get the figures on screen. | ||
Revision as of 15:14, 3 December 2025
Introduction
Hitachi HD44780 LCD controller, and I2C controller. 16X2 LCD without I2C circuit has sixteen pins.
Potentiometer at the back side. Screw that to get the figures on screen.
Wiring and connecting
Arduino Uno:
| LCD I2C | Arduino Uno |
|---|---|
| Vin | 5V |
| GND | GND |
| SDA | A4 |
| SCL | A5 |
Libraries
Liquid_Crystal_i2c by Frank de Brabander 1.12 works.
Check the address: Examples -> Wire -> I2C_scanner.
