Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 4 Next »

L6/L7:

  • Sulu V1 boards

Immediately after getting boards from Digicom:

  • L6 had noticeable epoxy deformation on Quik-Pak SCuM. L7 no noticeable deformation.

  • Pin headers hand-soldered by us. Josh tested both connections to SCuM and could program both initially.

A mistake on the BOM led to inductors not being soldered on by Digicom so DC-DC converters did not work. Alex was able to reheat the solder on the inductor pads for both boards to add the inductors. Afterwards:

  • After adding the inductors, L6 DC-DC converters functional but SCuM disconnected. We thought that heating the board to the point that the inductor pad solder melted might have loosened the SCuM Quik-Pak and a very small movement might have disconnected it.

  • After adding the inductors, L7 functionality did not change. It could still easily be programmed, but DC-DC converters were still disconnected. Due to L6 issues, we decided not to retry soldering on inductors.

L8/L9/L10:

  • Sulu V1 boards

  • Pin headers soldered on by Austin.

  • All 3 boards did not draw current when connected to VBAT.

  • Due to last minute changes with which inductors were used, Digicom initially placed the old inductors and later swapped them out for the correct ones. Digicom said they looked at the board under and xray machine and the connections looked ok.

  • Deformations in L8

L14/L15/L16:

  • Sulu V2 boards

  • L15 had noticeable epoxy deformation on Quik-Pak SCuM.

  • Pin headers soldered on by Digicom

  • L14 and L16 did not draw current when connected to VBAT. L15 did draw expected current when connected to VBAT, but did not draw current when connected to VDDD.

  • All 3 SCuM were confirmed 5 days earlier to successfully program with 3WB using the probe station.

L17/L19:

  • Sulu V2 boards

  • L19 had noticeable epoxy deformation on Quik-Pak SCuM. L17 had a noticeable crack in the epoxy.

  • Pin headers soldered on by Digicom

  • No current drawn from either board from any location.

  • Both SCuM were confirmed 1 day earlier to successfully program with 3WB using the probe station.

  • No labels