HAT-GUI !

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Pinout guide & interactive web GUI for MCP23017 and MCP23008 based Raspberry Pi expansion boards. Select a pin from the board to get started.

You can now add your own boards! Check-out our guide on GitHub.

Easy Installer

Our easy installer takes care of the setup process automatically.

sudo wget https://git.plasmadan.com/install.sh
sudo sh install.sh

This script will automatically enable I2C, install the required packages and setup the Web GUI.

Alternatively, you can install manually. See our setup guide.

Boards

  • Physical pin
  • WiringPi pin
  • Currently ,
Toggle Output All On All Off

WiringPi Guide

Read

gpio -x mcp23017:100:0x20 read 108

Write

gpio -x mcp23017:100:0x20 mode 108 out
gpio -x mcp23017:100:0x20 write 108 1
  • Operating voltage: - 1.8V to 5.5V
  • Maximum current into VDD pin: 125mA
  • Maximum current out of VSS pin: 150mA

Address Selection

Address A2 A1 A0
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