SYMA X8C X8HC 3.5mm pin out camera control signal
I was curious about the camera output on the SYMA X8 and how the controller causes the camera to activate.
Putting a 3.5 mm jack into the 3.5mm socket we find the following signals on the pins
| Pole | Signal |
| Tip | Power 5V |
| Shield | GND - 0V |
| Ring | Control - nominally: 3.3V Start/Stop video: 0V for 1 second Take picture: 0V for 250 milliseconds |
This is the scope showing the video signal (1s) and then the photo shot signal (250ms).
I use a Runcam 2 for photography but wonder if this signal could be harnessed to trigger the RunCam and/or drone recovery buzzer for when it lands in the corn field!
I’ll expand on this post if I get anywhere with that idea.