So I'm looking at some potential power supplies, and I'm trying to find something for the screw terminals on the standard breakout board.
I'm considering something like https://www.amazon.com/Powseed-Universal-Adapter-Household-Electronics/dp/B01MT5WVCG/ , which is cheaper than a real bench power supply and reasonably flexible and compact.
It lists that it can do 3A max on 5v. Assuming I'm not planning anything substantial in peripherals, should I be OK with this?
As long as it puts out a steady 5 volts as advertised then that should do it. You can use the barrel to screw terminal adapter that comes with the supply and some decent hookup wire from it to the board and you'll be all set.
That looks like it would be fine.
I am using:
https://www.amazon.com/gp/product/B0745BZV6T/
With:
https://www.amazon.com/gp/product/B079RCNNCK
wired directly to the breakout board. And it seems to work nicely so far.
Currently just using an old ATX PS that was underpowered for my new video card. Had to jumper the green wire to ground on the connector for the main board. But, everything seems to be working quite well. Hardware wise at least. Lottsa software issues.