Hi everyone, first post on here!
I’m writing to ask about two Power Sense Modules (SKU: PSM-ASM-R2-RP) that I received recently.
Short form: Should pins 1 & 2 on the PSM’s JST-GH connector be reading input voltage?
I purchased the ROV Electronics Package and a 4" chassis on their own to build into a custom ROV. I was building the chassis in steps, powering it on periodically with the battery to check that I had made connections correctly. When I reached the point where the Power Sense Module and the UBEC 5v regulator were both plugged into the PixHawk, suddenly neither my PixHawk or RPi would turn on.
I checked the 5V regulator separately, and it was toasted–my power supply went into current limit mode when I tried to put 13V on the input lines.
Without the 5V regulator & with the PSM connected to the PixHawk, all of the auxiliary output pins on the PixHawk are sitting at battery voltage.
With nothing connected, pins 1, 2, 3, & 4 on the JST-GH socket on the PSM are reading the same as the input (battery) voltage. I ordered a new unit because I thought this might be the issue, but it has the same behavior–see image below.
This doesn’t match the information on the product page, nor in this forum post: Power Sense Module Help so I was hoping that someone could either confirm that their modules do the same thing, and I can plug them safely into my PixHawk, or that this is not right and I shouldn’t use these.