Powering Arduino

[steinra]

This is right along the same topic we were working on last night.

I know that the rules have specific restrictions for motor power and other devices having their own connect points to the PD.

What was not clear is a custom sensor circuit, multiple loads.

We want to accomplish the same thing the PD is doing for the cRIO. A DC to DC step up to 24v, 5A, bring back down to 5v, 5A to power the other systems. (LED strips need a lot of power as do several computing devices). May also need to pull 12V off the 24V step up.

This branch circuit would have LED lights, Arduino and let's say a Raspberry Pi or two, plus and USB devices hanging off them.

What is not clear to me is if each of those would require their own power, or can all of those be supplied by the same 5v supply off a single breaker / fuse on the PD?

I may need to frame it up as a GDC question, but want to make sure it is phrased in a way that we don't get the "can't speak to specific designs" answer.

Ultimately I am trying to figure out if I need multiple separate 24V step ups with their corresponding step downs for each device, or can I have a "sub" PD with separate fusing?

Thanks!

Randy