Pioreactor / Pioreactor/pioreactor

[what happened] temperature inference when vial isn't pressed all the way down into sleeve

Open
#256 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

temperature / heating what-happened
Dominant language
Python
Stars
149
Forks
18
PR merge metrics
No merged PRs in 30d

Description

So this is interesting. I was seeing some very wonky temperature inferences in one of the pioreactors: very noisy, very unstable:

Screen Shot 2022-03-06 at 5 05 03 PM

Even the inference coefficients looks unusual: p=-0.008, q=-0.101, when normally p=-0.003, and q=-0.14 (±0.04).

When I physically inspected the vial, I was able to give it a very slight "push" down, and then it was secure on the bottom. After this, the coefficients looked more correct: p=-0.0029, q=-0.168, and the temperature inference was much more normal (pink line was physical correction):
Screen Shot 2022-03-06 at 5 08 49 PM

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue identifies no files, tests, or entry points. Start by locating the temperature-inference implementation and the code handling vial positioning or sensor input; reproduce the unstable readings with a vial that is not fully seated, and consider the issue done when that condition is handled with stable, expected inference.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, raspberry-pi
Domain
embedded-iot
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.