---
id: gpio
title: GPIO
sidebar_label: GPIO
sidebar_position: 4
---

## GPIO IO12

For the Lora V2.1-1.6 and V2.1-1.8, Shorting IO12 to ground will progress through the screen pages and/or wake up the device. A simple push switch can be added for this purpose.

<img src="/img/hardware/lora32-v2-1.6-button.jpg" width="400" align="left" />

<img
  src="/img/hardware/lora32-v2-1.6-button-example.jpg"
  width="400"
  align="left"
/>