Anybody having trouble with dosing pumps module?

[JFReyes]

Hi all:

I started working on further enhancements to the UI and encountered a problem. It seems that the dosing pumps functionality is not working right, particularly after the pull requests that have been merged since the last official release (4.1). I found that the doser pump calibration dialog did not work. Moreover, I also found that the duration of the pump on-time is only a few seconds and nowhere near what I set up (e.g. 2 minutes). I reported this to upstream but have not received a reply yet.

I would appreciate if y'all (who are controlling dosing pumps) would let me know:

1) whether your setup is working or not,
2) the software version you're using,
3) the particular hardware settings (ports/jacks/etc.) you're using, and
4) any other information that would help me figure out what's going on.

Thank you all for your assistance.

Regards,

[Rob F]

Thanks for posting, just to clarify, would this be seen in the official 4.1 or only the modified version? The other day I was playing with dosing pumps in calibration using 4.1 official and there were no issues.

[JFReyes]

Thanks for posting, just to clarify, would this be seen in the official 4.1 or only the modified version? The other day I was playing with dosing pumps in calibration using 4.1 official and there were no issues.

The official 4.1 version should be ok. I'm unsure about the modified version, though. Please let me know.

Thanks,

[Rob F]

The official 4.1 version should be ok. I'm unsure about the modified version, though. Please let me know.

Thanks,

I'll try the modified version this weekend and let you know.

[JFReyes]

The official 4.1 version should be ok. I'm unsure about the modified version, though. Please let me know.

Thanks,

I'll try the modified version this weekend and let you know.

Thanks Rob!

[JFReyes]

Update 3/6/21@7:20AM AST:

@ranjib has confirmed a bug was introduced into the dosing pumps module sometime after the 4.1 release. Since I base my modified versions on the current master branch, the last one posted here may or may not contain the bug. Those folks who are using my modified version with dosers please check and let me know of any issues. I will not be posting any new modifications until this bug is fixed.

Thanks,

[JFReyes]

Rob:

I've been doing further testing. It turns out that the duration issue is limited to the PWM/Analog and DC ports; it doesn't happen with PowerBar digital outlets. I used different RPi's for testing. Would it be possible that some failure in those circuits could turn off the power prematurely? (Or maybe a design feature as I'm using a simple LED load for testing, if it makes any difference.) Nevertheless, it doesn't make sense to me because if they're turned on manually they stay on, but I just want to be thorough. Thanks for your assistance.

Regards,

[Rob F]

Rob:

I've been doing further testing. It turns out that the duration issue is limited to the PWM/Analog and DC ports; it doesn't happen with PowerBar digital outlets. I used different RPi's for testing. Would it be possible that some failure in those circuits could turn off the power prematurely? (Or maybe a design feature as I'm using a simple LED load for testing, if it makes any difference.) Nevertheless,  it doesn't make sense to me because if they're turned on manually they stay on, but I just want to be thorough. Thanks for your assistance.

Regards,

I just tested with the latest modified package and didn't have any issues. I tested with the calibration screen, whatever I set for speed and duration was correct. 

I wonder if it's a problem related to pca9685, that controls the PWM/Analog and DC ports. Anyways seems ok and I haven't heard anyone with issues.

[JFReyes]

Thanks a lot for your input Rob, I'll keep looking.

Regards,