Gravity CH423 I2C 24 Digital IO Port Expander

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


Documentation: 


Technical Details: 

  • Manufacturer: DFRobot 
  • Manufacturer SKU: DFR0979 
  • Communication Interface: I2C 
  • I2C Address: 0x20-0x3F 
  • Power Supply: 3.3V to 5V 
  • Static Current: 1mA 
  • IO Continuous Driver Current: 15mA 
  • Operating Temperature Range: -20°C to 80°C 
  • Dimension: 45 x 37 x 12mm 
  • Weight: 22g

Scope of Delivery: 

  • 1x Gravity CH423 I2C 24 Digital IO Port Expander   
  • 1x 4pin connection cable 30cm


Write a review

Note: HTML is not translated!
    Bad           Good

Gravity CH423 I2C 24 Digital IO Port Expander

  • Brand: DFRobot
  • Product Code: 422590
  • Availability: In Stock
  • CHF7,90

  • Ex Tax: CHF7,31

Related Products

I2C Interface PCF8574 for LCD Display

I2C Interface PCF8574 for LCD Display

The I2C interface module significantly simplifies the control of the LCD displays 1602 and 2004. Nor..

CHF4,90 Ex Tax: CHF4,53

PCF8574 I2C Port Expander I/O Extension 8 Pin

PCF8574 I2C Port Expander I/O Extension 8 Pin

If you need more I/O pins then this PCF8574 port expander is the perfect solution. The PCF8574 can e..

CHF5,90 Ex Tax: CHF5,46

PCA8574AD I2C Port Expander I/O Extension 8 Pin

PCA8574AD I2C Port Expander I/O Extension 8 Pin

If you simply do not have enough digital I/O pins on your Arduino, you can expand your I/O by 8 with..

CHF8,90 Ex Tax: CHF8,23

M5Stack Extend Serial I/O Unit PCA9554PW Port Expander

M5Stack Extend Serial I/O Unit PCA9554PW Port Expander

The EXT.IO by M5stack is a PCA9554PW port expander that allows you to expand your I/O. The port expa..

CHF8,90 Ex Tax: CHF8,23

M5Stack Pb.HUB IO Expansion Unit with MEGA328

M5Stack Pb.HUB IO Expansion Unit with MEGA328

PbHUB from M5Stack is an expander for the GROVE PORTB (black port, used for analog and digital input..

CHF9,90 Ex Tax: CHF9,16

Gravity MCP23017 I2C 16 Digital IO Expansion Module

Gravity MCP23017 I2C 16 Digital IO Expansion Module

This is an IO expansion module based on the MCP23017 chip. The module can expand up to 16 IOs. It ca..

CHF8,90 Ex Tax: CHF8,23

Gravity I2C HUB

Gravity I2C HUB

The Gravity I2C HUB allows you to connect 8 I2C devices to a microcontroller such as Arduino or Rasp..

CHF3,90 Ex Tax: CHF3,61

M5Stack 6-Way IO Unit PbHUB v1.1

M5Stack 6-Way IO Unit PbHUB v1.1

Discover the M5Stack 6-Channel IO Unit PbHUB v1.1, your solution for versatile expansion options in ..

CHF11,90 Ex Tax: CHF11,01

Tags: CH423, Digital, IO, Expansion, Extension module, Gravity, I2C, Port Expander, Port Expansion, IO, 3.3V, 5V, I2C