i2c_lcd_display
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I2C LCD Display
LCDs are a great way to display simple information (like an IP address) without going to the expense of a full LCD panel, or connecting a monitor. For my previous LCD I used a 2 line LCD in 4 bit mode, this is a very simple implementation, but it uses lots of GPIO pins.
Another way to connect an LCD is to use the I2C interface. This only requires a total of 4 wires, two for the data, 2 for power. You can buy LCDs with built in I2C adaptors, I got mine from eBay, I can't really link it because the links to eBay items seem to die fairly quicly.
If you do a search for something like this:
Yellow Green Serial IIC/I2C/TWI 2004 20X4 Character LCD Module For Arduino
Then you should find what you are looking for.
i2c_lcd_display.1470078138.txt.gz · Last modified: 2023/03/09 22:35 (external edit)