Introduction

Dictel’s io1212 (and io1212hq) board is a robust input/output accessory board for the Raspberry Pi designed for quality and suitable for industrial applications. It includes 12x relayed outputs as well as 12x opto-coupled inputs.

Dictel’s io1212hq board

All input and output lines include an LED to visually indicate whether the line is locically on or off.

Both input and output signals are powered by a source other than the Raspberry Pi. This power must be supplied through pins labeled GND and +5V. In the case of io1212hq, the power can be optionally supplied through the USB-C port instead.

Front of the io1212 board

Back of the io1212 board

Front of the io1212hq board

Back of the io1212hq board

The following sections include setup instructions and a set of step-by-step usage examples.

Contents

• Introduction
• Setup
• Pinout
  • Line Identifiers
• Using GPIO Zero
  • Installation
  • Example 1: Blink
  • Example 2: Using LEDBoard
  • Example 3: Naming your outputs
  • Example 4: Using inputs with Button
  • Example 5: Using inputs with ButtonBoard
• Using libgpiod
  • Installation
  • Example 1: Blink
  • Example 2: Using inputs
• Using pigpio
  • Installation
  • Example 1: Blink
  • Example 2: Using inputs
  • Example 3: Callback functions
• Using pigpiod
  • Usage
  • Example 1: Blink
  • Example 2: Using inputs
• Using pigpiod remotely