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Merge pull request #436 from smika6/radxa-gs-wiki-info-update 

Update fpv-radxa.md for GPIO Buttons & HDZero GS
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Signor Pellegrino 2025-01-15 02:01:19 +03:00 committed by GitHub
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@ -25,6 +25,7 @@ This documentation provides a list of enclosures for OpenIPC VRX setups, availab
7. [OpenIPC Radxa Zero 3W HDMI Ground Station](https://www.printables.com/model/1020246-openipc-radxa-zero-3w-hdmi-ground-station) 7. [OpenIPC Radxa Zero 3W HDMI Ground Station](https://www.printables.com/model/1020246-openipc-radxa-zero-3w-hdmi-ground-station)
8. [Radxa Zero 3W Case for OpenIPC](https://www.printables.com/model/1054879-radxa-zero-3w-case-for-openipc) 8. [Radxa Zero 3W Case for OpenIPC](https://www.printables.com/model/1054879-radxa-zero-3w-case-for-openipc)
9. [OpenIPC VRX Case on Thingiverse](https://www.thingiverse.com/thing:6680584) 9. [OpenIPC VRX Case on Thingiverse](https://www.thingiverse.com/thing:6680584)
10. [OpenIPC Radxa Zero 3W HDZero Rail Mount](https://www.printables.com/model/811132-openipc-radxa-zero-3w-hdzero-goggle-case-rail-moun/files)
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@ -49,12 +50,13 @@ Note: for RubyFPV you will either need a USB Network Dongle like the one below
or access serial console, please check [here](https://wiki.radxa.com/Zero/dev/serial-console) on how to do that. or access serial console, please check [here](https://wiki.radxa.com/Zero/dev/serial-console) on how to do that.
### DVR with FPV firmware ### GPIO Buttons
DVR functionality; It requires a push button to be installed to the gpio header between physical pins 25 and 27 like so: Connect a button or switch to 3.3v and physical pins 16 and 18 to increase/decrease your vrx channel.
Connect a button or switch to physical pin 38 and 3.3v to toggle your vrx bandwidth between 20MHz and 40Mhz.
Physical pin 32 controls DVR recording, connect a button/switch to join 3.3v and pin 32 to start/stop recordings.
(![GPIO Mappings](https://github.com/user-attachments/assets/6b524a5a-37d8-4bc0-8bdd-e3b15b33ddf5)
![image](../images/fpv-radxa-gpio.png)
To record DVR, push the button once. The stream will start and DVR will begin recording. When finished, push the button once to stop the recording and save the file. To record DVR, push the button once. The stream will start and DVR will begin recording. When finished, push the button once to stop the recording and save the file.