03-09-2021, 03:52 PM
Thanks, that clears things up. The light is definitely 12v so don't want a 20v power supply although that will make it brighter haha.
It is sounding like a weak power supply on controller, the fact the light dims when the ATO pump comes on shows it's lacking power. Like that the power supply probably won't last long. I think if you put a volt meter on DC port you'll find it's not hitting 12v and drops when pump runs.
I feel most of these cheap power supply are only good for half their ratings and you'll be pushing that.
Going off the image from the light link it looks like it has the same 2.1mm barrel connector and the polarity is correct. It has a small image showing center is + and housing is -. If your power supply is marked like that you can simply plug it into the controller and use it. The controller and Pi alone only draw about 0.3 amps so it should be the same brightness.
If not verify you are getting 12v out of the DC port at 100%.
If that doesn't help I'll show how to use external power supply.
It is sounding like a weak power supply on controller, the fact the light dims when the ATO pump comes on shows it's lacking power. Like that the power supply probably won't last long. I think if you put a volt meter on DC port you'll find it's not hitting 12v and drops when pump runs.
I feel most of these cheap power supply are only good for half their ratings and you'll be pushing that.
(03-09-2021, 02:16 AM)zee_zout Wrote: what do you mean with 'center positive'?
Going off the image from the light link it looks like it has the same 2.1mm barrel connector and the polarity is correct. It has a small image showing center is + and housing is -. If your power supply is marked like that you can simply plug it into the controller and use it. The controller and Pi alone only draw about 0.3 amps so it should be the same brightness.
If not verify you are getting 12v out of the DC port at 100%.
If that doesn't help I'll show how to use external power supply.
