1700+ SKUs! 30% Off First Item + Free Shipping ($100+) ➡️ Shop Now
CommunityForumWikiBlogLearn
TOP
image_#0_small
image_#1_small
image_#2_small
image_#3_small
image_#4_small
image_#5_small
image_#6_small
image_#7_small
image_#8_small

Gravity: CH423 I2C 24 Digital IO Expansion Module

30% OFF FOR FIRST UNIT
$4.90
SKU: DFR0979
Volume Discount
  • $4.80 3+ items
  • $4.70 5+ items
  • $4.50 10+ items
This IO expansion board uses the CH423 chip to extend 24 digital ports via I2C, suitable for LED projects. It includes 8 GPIOs with interrupts and 16 GPOs.
15 th

First-unit discount applied automatically at checkout after login.

Purchase this product and earn 49 reward points, which are tied to VIP membership program. Learn More >
  • 16 digital ports
    16 digital ports
    $5.90
  • 24 digital ports
    24 digital ports
    $4.90
IntroductionFeaturesApplicationsSpecificationDocumentsShipping List

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.

Gravity: CH423 I2C 24 Digital IO Expansion Module

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

    Shipping List

  • Gravity: CH423 I2C 24 Digital IO Expansion Module x1
  • Gravity-4P I2C/UART Sensor cable x1
    • ArduinoGravityMore Arduino Related ProjectsArduino TutorialsMore Gravity ProjectsGravity Projects
    Gravity: CH423 I2C 24 Digital IO Expansion Module
    $0.00