PSU plugin fault/advice getting the sensing to work correctly

[bladeslapper]

I'm hoping someone can help - it's driving me mad!
I've set up the PSU plugin in the way I would like and through trial and error have eliminated as many potential problems as I can think of. I'm in a position where it will only work then the green power symbol displays the wrong way around. Whenever I "invert" this display, the green toggle button simply does not toggle the relay.
Octoprint v 1.4.2
Relay connected to GPIO25 (pull-down)
Switching set to GPIO 25 not 'invert'
Sensing set to GPIO 25 float 'invert'
Power supply is good, no other connections on GPIO pins. Relay power being taken from 4 and 6

Octoprint boots up, switches the relay on and shows a green toggle symbol but this button now does not turn the relay off again.
I've tried using pull-up, different GPIOs, setting the sense to pull up and down and whenever the toggle switch shows in the correct sense according to the relay, this switch does not seem to be clickable.

I'm at the point of thinking there might be a problem rather than me having the settings incorrect.

Does anyone have any ideas? Will any logs help? Details of other plug-ins? I'm stuck!

[bladeslapper]

I've continued to work on this but with no more success. I will update my findings in case it helps anyone else.

I've tested many pins with many combinations of settings to come up with this

Board number	Pin type	Switching	Sensing	Sensing	Activates on boot?	Correct sense?
26	pull-up	invert	internal	invert	yes	no
26	pull-up	-	internal	-	no	yes
26	pull-up	invert	GRIO	invert	yes	no
26	pull-up	-	GPIO	-	no	yes
37	pull-down	invert	internal	invert	yes	no
37	pull-down	-	internal	-	no	yes
37	pull-down	invert	GPIO	invert	yes	no
37	pull-down	-	GPIO	-	no	yes
16	pull-down	-	GPIO	-	no	yes
3	pull-up	-	GPIO	-	no	yes

so I basically need either a YES and YES or NO and NO but when I invert the sensing reading the green power button stops working and the auto-off also stops working. I have the same problem whenever the 2 invert options oppose each other. It feels like I am so close but something is fundamentally wrong.

I wonder if using "System command" for sensing will be better? Does anyone have any idea what the code might need to be for this? I have no experience of this.

[bladeslapper]

There are a couple of work-arounds for this and a potential solution here:

PSU Control automatic Power on at boot?

I've found a work-around to this and it may help others so thought I would post it on here. The problem: No matter what combination of PSU control plugin settings I try (different pins, invert, BCM/board, internal, float, NO/NC etc) I couldn't get it to boot into OctoPrint and turn the printer on automatically and know that the PSU is on and therefore function correctly from that point on. Yes I know that all I have to do it click the little lightning bolt! The one setting that seemed like i…

[slvrpltd]

it's weird, i have the same issue. i have tried almost every possible combination of pull-up/-down pins on my pi with almost every possible combination of settings in the plugin – no luck here

[slvrpltd]

@PSU Control automatic Power on at boot?

Install the Enclosure plugin.
Set-up the PSU relay as an output and tick the box to activate it during boot and hide the UI

i tried this and now, even with auto power on in psucontrol deactivated, the psu switches on and immediately off. any ideas?