Multiple Relays
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- Dominant language
- Python
- Stars
- 494
- Forks
- 472
- PR merge metrics
- No merged PRs in 30d
Description
We've bought three relays, and we use the following Python Class to interact with the relay (see attached file). Nothing complicated. It's just Python 3 and more object encapsulation.
The problem we have is that when we set off a relay, the two other relays also set off ! Which is not what we're expected.
For example:
r1 = Relay(5)
r2 = Relay(6)
r3 = Relay(7)
r1.on()
r2.on()
r3.off() # r1 and r2 are now off ...
We observed the same problem without the object encapsulation. And thus we suspect that the problem is coming from GrovePi.
Is it a know bug? Or is GrovePi intended to only work with one relay?
Contributor guide
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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
Start with the attached relay.py file and the GrovePi relay behavior described in the issue. Reproduce the example using relay pins 5, 6, and 7, then inspect whether the behavior comes from the Python class or GrovePi. Done means determining the cause and ensuring each relay can be switched independently, if the hardware supports it.
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
- 30/100