Description

This IO expansion board based on the CH423 chip?extends 24 digital ports via I2C, including 8 GPIOs with interrupt functions and 16 GPOs.
CH423 has a built-in current drive circuit that offers a 15mA continuous drive current, which can statically drive 24 LED tubes or dynamically drive 128 LEDs. This CH423 I2C to GPIO IO expander is suitable for projects involving LED tubes, dot matrix screens, light cubes, etc.
Applications:

Driving LED lights
Driving Dot matrix screen
Driving Light Cubes

Features:

8 general input/output pins
16 general output pins
Built-in driving circuit, up to 15mA continuous driving current

Package Includes:
1 x Gravity: CH423 I2C 24 Digital IO Expansion Module
1 x Gravity-4P I2C/UART Sensor cable