I’m having issues with a generic amazon buck converter dropping voltage during cranking, causing the rpi5 to not recover until a full power cycle.
I figured the converter would be able to keep a stable output of 5v since the input is 12, but maybe the input output relation is linear? I’ve tried several power sources that stay on during cranking with the same result.
Either this buck converter sucks or I need a buck boost, or would I be okay running a diode and cap?
I can’t find any boost modules that can provide the amperage, nor do I have the space for a hat for my rpi5 and I would be concerned about batteries.
What are my real options?
Without room for a hat, don’t know. We have successfully used CANHat which has very convenient +12V input.
hmm. So if that hat input voltage drops to say 8 volts, the pi will still get 5v?
I think I can make room if I use a different box.
I have not measured, but it will stay on during cranking on my 6.4 Hemi.
Good news. The hats still cleared and they allowed the rpi5 units to stay on during cranking. Only the displays dip out but I can deal with that. I assume you’re using the Waveshare B unit.
I think this is what we have been using:
PiCAN3 CAN Bus HAT for Raspberry Pi 4 with SMPS and RTC
Its only for RPi4 though.