# Camera & ON/OFF Pit Switch

## For INAV 

Default no USER1 & USER2 definition, CAM1 & 9V/12V are ON by default.

To switch between **CAM1** & **CAM 2**, assign a channel to USER1. In this scenario below, **CAM 2** is **ON** & **CAM1** is **OFF** only when Channel 8 is HIGH position

To set 9V/12V to turn **OFF** via switch, assign a channel to USER2 to turn off the 9V/12V. In this scenario, VTX is **OFF** only when Channel 7 is in LOW position.

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2Fhxx8Z01aq4SrfVdLQizy%2Fimage.png?alt=media&#x26;token=04082d8e-ad30-4d2f-ba9e-6abb8bdb86f9" alt=""><figcaption></figcaption></figure>

<table data-header-hidden><thead><tr><th width="185.76549865229111">Mode</th><th></th><th></th></tr></thead><tbody><tr><td>PC13</td><td>USER1</td><td>CAM Switch</td></tr><tr><td>PE3</td><td>USER2</td><td>VTX Power Control</td></tr><tr><td>PD4</td><td>USER3</td><td>IO1 General GPIO1</td></tr><tr><td>PE4</td><td>USER4</td><td>IO2 General GPIO2</td></tr></tbody></table>

## For Ardupilot Relay (PINIO)

<table data-header-hidden><thead><tr><th width="186"></th><th></th><th></th></tr></thead><tbody><tr><td>PC13</td><td>PINIO1 OUTPUT GPIO (81)</td><td>CAM Switch</td></tr><tr><td>PE3</td><td>PINIO2 OUTPUT GPIO (82)</td><td>VTX Power Control</td></tr><tr><td>PD4</td><td>PINIO3 OUTPUT GPIO (83)</td><td>IO1 General GPIO1</td></tr><tr><td>PE4</td><td>PINIO4 OUTPUT GPIO (84)</td><td>IO2 General GPIO2</td></tr></tbody></table>

### [RCx\_OPTION: RC input option](https://ardupilot.org/copter/docs/common-auxiliary-functions.html)

* 28   -> Relay1 On/Off
* 34   -> Relay2 On/Off
* 35   -> Relay3 On/Off
* 36   -> Relay4 On/Off

### Setup Example

<table data-header-hidden><thead><tr><th width="167"></th><th width="81.33333333333331"></th><th></th></tr></thead><tbody><tr><td>RELAY_PIN </td><td>81</td><td>Camera Switch GPIO</td></tr><tr><td>RC7_OPTION</td><td>28</td><td>Relay On/Off, Use CH7 of Transmitter to switch 9V/12V</td></tr><tr><td>RELAY_PIN2 </td><td>82</td><td>9V/12V Switch GPIO</td></tr><tr><td>RC8_OPTION</td><td>34</td><td>Relay2 On/Off, Use CH8 of Transmitter to switch camera</td></tr></tbody></table>

or

<table data-header-hidden><thead><tr><th width="167"></th><th width="81.33333333333331"></th><th></th></tr></thead><tbody><tr><td>RELAY_PIN </td><td>81</td><td>Camera Switch GPIO</td></tr><tr><td>RC9_OPTION</td><td>35</td><td>Relay3 On/Off, Use CH9 of Transmitter to switch Vsw</td></tr><tr><td>RELAY_PIN2 </td><td>82</td><td>9V/12V Switch GPIO</td></tr><tr><td>RC10_OPTION</td><td>36</td><td>Relay4 On/Off, Use CH10 of Transmitter to switch camera</td></tr></tbody></table>