Summary

• video system power supply (change pdb to buck, i am curious why we doing this but yea in the log)

• why?

• System connectors

• System location

• 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 steps

  • 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.

• Ishman Mann driving this with support from Daniel Puratich

Technical Details/Changelog

12V must be supplied to the VTX system off of a unique BEC, not using the PDB.

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EE to (hopefully) provide more context/clarity on 2024-04-22 Electronics Placement

Arch doc implementation Info

< where is your content going? What will be written? >

Approvals & Reviews

< space for reviewers to leave thoughts / approvals? >

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