arduino › display module
generic 16x2 LCD HD44780 I2C
I2C backpack uses a PCF8574 expander at 0x27 or 0x3F. Native HD44780 needs 5V — most 'I2C LCD' boards do work at 3.3V signal but the contrast pot needs adjustment for low-VCC operation.
Specifications
- interface
- i2c
- resolution px
- 16x2 char
- controller chip
- hd44780
- voltage v
- 5v
- touchscreen
- none
Sources
- SparkFun open product catalog · ingest 2026-05-06