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---
id: gpio
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title: LILYGO® TTGO Lora GPIO
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sidebar_label: GPIO
sidebar_position: 4
---
## GPIO IO12
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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.
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<img src="/img/hardware/lora32-v2-1.6-button.webp" width="400" align="left" />
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<img
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src="/img/hardware/lora32-v2-1.6-button-example.webp"
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width="400"
align="left"
/>
