Video broke on my Tiny Whoop!

SlipStream

Junior Member
I have a modified Blade Inductrix "Tiny Whoop" fully working (until recently) with the parts listed bellow.

But to save another gram, I shortened the motor wires and soldered them strait to the pcb without the plugs, I also soldered thinner wires from the pcb to the camera.

The tiny whoop still flies and the video still works until I touch the throttle and suddenly I get large white bands in my view that look exactly like this https://oscarliang.com/fpv-motor-esc-noise-interference-lost-video-jumping-line-snow/

Has any one has this problem? I believe I have damaged the cameras pcb during soldering.

My troubleshooting:
  • I've tried a different battery. Effect: no change
  • I put the camera on another micro quad. Effect: no change.
  • I've held the drone tightly to stop the vibrations. Effect: a much clearer video, much less banding.
  • I've added a second battery just for the camera. Effect: clear video.
Specs:
  • The camera is a FX797T 5.8G 25mW 40ch VTX 600TVL.
  • The motors are the fast speed motors from micro motor warehouse.
  • The battery is a Turnigy nanotech 3.7V 200mah 35-70C.
 

Revere

New member
Your getting EM interference, I assume the "thinner wires" you placed between the camera and the PCB used normal unshielded wire?
That'll be your problem. Replace 'em with shielded wire or add a ferrous ring. If your really worried about weight then use the shielded wire, a ferrous ring will weigh a fair bit more than wire.
 

Nerobro

A Severe Lack of Sense
The stock motor wires are twisted. Did you preserve the twist in the motor wires? The twist is to stop the motor wires from acting as antennas.
 

SlipStream

Junior Member
SOLVED

I bought a new camera/vtx combo (FX798T) and the EM interference is gone. I must have damaged (or shorted) the filter on the camera when soldering wires directly to the pcb.

Happy flying!
 

Daemon1954

New member
Hum (60Hz) bars are an indication of an unshielded lead, chances are there is nothing wrong with your camera.