DJI FPV Digidapter Headtracker

This case allows you to mount the Arduino Nano 33 BLE based head tracker by dlktdr (https://github.com/dlktdr/HeadTracker/wiki/Nano33BLE-Build-Instructions) to the BDI Digidapter.

For wiring of the Arduino, please refer to the Headtracker Github page

On the Digidapter side, follow these steps:
- 5V: available from the lowest pin of the Fatshark module interface (see image)
- GND: connects to the third pin from below (see image)
- If you chose to use wired PPM output as I did, you will have to connect the PPM output to one of the "not connected" pins (in my case: the upper most pin). This pin has to be routed to the audio-ouput jack of the Digidapter. As the PPM signal is assigned to the tip of the trainer cable's 3,5mm audio-jack, it has to be connected to "audio right (R)". To do that, you just have to add a jumper wire as depicted in one of the images above.

I powered the system up (which worked fine) but didn't test the PPM output to my Taranis so far - hence I marked