![]() You can solder any bit of them to make it 0 if needed to address more than LCD I2C expander board. With solder pads, A0 A1 A2 which if left as is will be 1 1 1 (pulled-up). As well as a potentiometer to adjust the LCD screen contrast. There is a jumper to whether turn on or off the LCD backlight. This module board is a breakout board for the I2C IO Expander chip PCF8574 designed for LCD interfacing via a 16-pin header. I2C LCD IO Expander (PCF8574) Module Board Description & Pinout ![]() Digital Storage Oscilloscope (DSO): Siglent SDS1104 (on ).Component Name Buy On 1 PIC16F877A or PIC18F2550 or any other Add 2 BreadBoard Add 1 Alphanumeric LCD 16×2 Add 1 I2C LCD IO Expander Module Add 8 LED Add Add 1 Resistors Kit Add Add 1 Capacitors Kit Add Add 1 Jumper Wires Pack Add Add 1 LM7805 Voltage Regulator (5v) Add 1 Crystal Oscillator Add 1 PICkit2 or 3 Programmer Add 1 9v Battery or DC Power Supply Add Add Add 5 I2C LCD 16×2 Interfacing With PIC – LAB. ![]() ![]() 3.2 Driver Sub-Routines (Software Components). ![]()
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