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Problem:
Video System is seeing a lot of noise induced when ESCs are under load
Options (not mutually exclusive)
Use a thicker wire to ensure low inductance and resistance to this device.
Add a common mode choke or inductor (and appropriate capacitors to avoid a resonance problem)
essentially add an input filter close to the OSD
Add more input capacitance
OSD board has very few input caps
Use a power supply placed further away from the ESCS
reduce noise coupling into the system
Move VTX system
If it’s on other side of drone away from ESCs that should help as well
Next stepsTarget next steps before saturday the 11th
Determine theoretical peak current into the video system
see arch doc for hardware datasheets
Ensure wires are appropriately sized, fix if not.
Solder more capacitors into the harness connection (cover in conformal coat)
test this at flight test to see if this solves. Then we can proceed to other options. Start simple.
Target steps before Saturday the 18th
wait to see if stuff before solves
add in common mode choke, design to ensure won’t saturate
verify capacitance is sufficient
Ishman Mann driving this with support from Daniel Puratich
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