Overcurrent change?

Erwu117

Hello! I am currently working on a project involving AI in construction safety. The problem that I have is as soon that I connected the two devices (arduino and OAK-D Lite) in the raspberry pi, the arduino seems not working maybe because of having not enough power but as soon as I remove the OAK-D Lite from the raspberry pi, the unit doesn't work anymore. Does anyone know what's the reason for this?

erik

Hi Erwu117 , Yes, the OAK-D-Lite consumes too much power for the RPi, see docs here. You'd need something like a Y-adapter (or powered usb hub).
Thanks, Erik

Erwu117

erik Is there something that I have to fix on the hardware?

Erwu117

But it was working earlier and I did run some yolo models to test it maybe it got damage because of brownouts / current spikes?

erik

Erwu117 Try it with your laptop/PC first. I think the hardware shouldn't get damaged in case of brownouts.

Erwu117

erik
I tried it earlier it doesn't also show up in my laptop.

Erwu117

erik I dunno if the screenshots above will suffice but basically what I suspect is the unit was killed due to the brownouts in the RPi but that shouldn't be the case right? I mean how on earth a 5V rail power supply would kill an OAK-D Lite.

Erwu117

The spare one that I have works tho I am really confused of how did it happened

Erwu117

Btw I used dmesg -w command to troubleshoot the device just to found out that it is indicating 'over-current change'.

erik

Erwu117 'over-current change' - does that report on your PC or RPI? Please try out on PC, as RPI is known to have power issues if you don't externally power the device (eg Y-adapter)

Erwu117

erik On RPi. As I said last time, it also didn't work on the PC when I tried to connect it (shown on the second screenshot above)

erik

Hi Erwu117 , could you please try it again when you externally power the device?

Erwu117

erik Tried it on powerbank, it mysteriously turns off the powerbank once that I plugged it in.

Erwu117

erik Is there anyway that I can fixed it? Like the linear or current regulator in the PCB of the unit?? I suspected that it maybe have a blown chip due to the brownouts when I plugged the Arduino and OAK-D Lite simultaneously in RPi

David

Hi Erwu117,

Which LDO exactly are you talking about? Is it LDO on the OAK-D-Lite or the PMIC on the RPi?
Suppose it is on the OAK-D-Lite, best would be if you can take a photo and point me to the component that is overheating or you think is causing troubles and we can let you know the PN and help with assisting you with ordering.
TL;DR: If you can explain it a bit clearly to me what causes issues we might figure out something.
Thanks,

Regards,
David