Stepping down voltages (which PSU?)

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my project running on poe using tp-link splitter can output 5,9 or 12v. rfid keypad supposed take 12v works ok on 9v , arduino can handle 9v in - there's temperature sensor inside enclosure make sure things aren't getting hot (it's been running few weeks logging temperature readings every 5 minutes , hasn't melted yet :d).

however, i'm going changing arduino pi clone (orange pi pc) various reasons. needs 5v/2a input can't bung in 9v before.

i've read using 7805 regulator cause lot of heat issues (mainly due current) thinking of using buck converter.

however, here's question...

the poe supplies 48v splitter seems made, known item (rather cheap component made me :d) should set output of splitter 9v or 12v? buck converter can handle either don't want heat if can it.

this arduino forum , question more appropriate on rpi forum.

however... best option in opinion switch splitter 5v typically @ 2a, use 5v 12v set-up dc-dc converter rfid keypad assume takes little power. running @ correct voltages.


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Stepping down voltages (which PSU?)


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