5v 4a USBC pdu needed

[Trustmeimadoctor]

Finding it really hard to find a PSU for my orange pi it says 5v 4a can only seem to find them with EU or us plugs though can find loads of 2.4 3 and some 3.5 ones but not 4amp ones

Any leads ?

[Paul Drawmer]

I've a couple of Pi running 24/7 and they've been running for a few years with 3A psu.

Why do you want 4amp?

https://thepihut.com/collections/raspberry-pi-powe...

[Trustmeimadoctor]

Mainly because it said in the spec sheet

It is an Octacore with 16GB ram and nvme so is quite a bit more hungry than a pi 4 but honestly I doubt I'm gonna be stressing it enough with proxmox running home assistant and other little vm's to run it flat out so could maybe get away with 3A just don't want instability


spec sheet
others using the same cpu are using 12v bricks instead and that would be much easier

Edited by Trustmeimadoctor on Wednesday 21st December 09:08

[Trustmeimadoctor]

hmm


and a common 5v4a psu with type m barrel plug maybe

[OutInTheShed]

We found that Pis work a lot more reliably when supplied with an adequate supply which never dips below 5V.
One way to achieve that is a DC-DC converter set to about 5.1V
On a short cable to the Pi.
It's then quite easy to find a sufficiently watty 12V PSU to feed the DC-DC.

At 3A, it does not take much for a cable to dip tens of mV.
Lots of 'off the shelf' PSUs are not brilliantly regulated and will either droop under load, or give significantly more than the nominal volts under light load.
Many are prone to transient swings in the voltage in response to changes in load.

If you get poor wifi performance, check the power supply.

[Trustmeimadoctor]

this is getting more complicated
any pointers ?

[OutInTheShed]

We used something like this:
https://www.ebay.co.uk/itm/363328041739?hash=item5...
But we have proper Fluke meters to set the volts.

The fact that the Pi 4 is so fussy about volts is a bit of a disappointment.

The Pi Zero seems a happier thing altogether, but is obviously a modest performer.

[Trustmeimadoctor]

im going to give a 5v 4a wall wart a co with the converter then if its iffy with the orange pi then i will sacrifice and old laptop supply and do it with your method but i only have a cheap multimeter so yeah my milage may vary or i could buy a scope as ive always fancied one