Gravity: CH423 I2C 24 Digital IO Expansion Module

SKU:DFR0979 Brand:DFRobot Reward Points: 49

$4.90
In Stock

Categories: All Products Modules IO Expansion Shields & HATs

Topic: Arduino Gravity

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Introduction

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.

Connect Diagram

Features

8 general input/output pins

16 general output pins

Built-in driving circuit, up to 15mA continuous driving current

Applications

Driving LED lights

Driving Dot matrix screen

Driving Light Cubes

Specification

Power Supply: 3.3V~5V

Static Current: 1mA

IO Continuous Driving Current: 15mA

Communication: I2C

I2C Address: 0x20-0x3F(The module occupies I2C address of 0x20-0x3F and cannot work with I2C device in this address range.)

Operating Temperature Range: -20℃~80℃

Size: 45*37mm/1.78*1.46”

Documents

Product wiki

Schematics

Dimension

Shipping List

Gravity: CH423 I2C 24 Digital IO Expansion Module x1

Gravity-4P I2C/UART Sensor cable x1

REVIEW

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FAQ