oxidecomputer / oxidecomputer/hubris
Strange voltage readings from hotswap controller
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- Dominant language
- Rust
- Stars
- 3.6k
- Forks
- 239
- Avg merge
- 1d 12h
- Merged PRs (30d)
- 23
Description
While running a modded version of humility sensors -s that outputs sensor data that can be ingested into PlotJuggler, I noticed some potentially erroneous voltage readings from the hot plug controller. You can see two instances of the measurement dips.
We believe these dips are not the actual voltage because the board was in A0 and stayed there despite this input voltage dropping below the undervoltage lockout threshold. OS uptime matches what is expected here.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The reported entry point is the modded humility sensors -s command; begin by examining the attached raw CSV and comparing the two dips with the board's A0 state and undervoltage-lockout threshold. Done means the cause of the readings is identified and the sensor output no longer reports unexplained voltage dips.
Written by the indexing model from the issue text.
Assessment
- Domain
- embedded-iot
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100