pieCorePlayer hardware question

[rdb]

I'm looking at building a pCP in an existing housing using a raspberry pi zero w and a DAQ. I have 24V, 18V, or 12V DC (clean) available from the existing power supply and was wondering what my best option is for stepping this down for the raspberry pi? Would a Pololu 5V, 2.5A Step-Down Voltage Regulator D24V22F5 work or is the RPi input going to be too noisy for audio?

[Greg Erskine]

hi rdb,

Give it a go. I have a similar buck convertor I have been meaning to try. Its in my box of things to try!


Maybe adding an additional cap on the RPi0 power input will help?

regards
Greg

[rdb]

hi rdb,

Give it a go. I have a similar buck convertor I have been meaning to try. Its in my box of things to try!


Maybe adding an additional cap on the RPi0 power input will help?

regards
Greg

Thanks Greg. If I had all the bits and pieces, that's exactly what I'd do. Alas, I need to order them and don't have a scope at home to check the ripple. I figured I'd ask to see if anyone else has done something similar before going further.

[mcduman]

i have tried various voltage regulators from switch mode to venerable lm7805 to new generation low drop outs (LDO). There is a jump in sound quality when going from switch mode to linear. but then you have to deal with heat esp with rpi 3b+. with your pi zero which i also love above all pi's i would try one of the newer LDO's if you are drawing less then 0.5 A. http://www.ldovr.com/category-s/118.htm

if you have more budget and enthusiasm and prefer discrete components over IC's these are super regulators: https://sjostromaudio.net/cart/en/su...eference-lm431

pi's and audio hats respond very well to the quality of the incoming power