I'm taking on a project of making a Raspberry Pi cluster using the Pi 3 Model B.
Doing some research online, I've come to conclusions so far:
- Each pi should have 2.5A supplied to it to allow for the usage of peripherals (Ie, a LCD display through USB and extra indicator LEDs) and other connections (the individual pi cases I'm planning on getting/making/using will make use of either fans or heatsinks, but would like the potential to use fans).
- The best way to do this is with the 5V Rail on a computer power supply
Now, past this... information I'm finding online seems to be largely out of date, and for the Pi 2 or earlier.
Any specific PSU that's recommended for doing this? Or rather, a specific wattage? Keep in mind that I'm also planning on attaching two large fans to it for the overall cluster case. The idea is I'm starting out small (currently using just 4 Pis), but plan on building it to be much larger. I want to be able to split everything between multiple PSUs in order to distribute my power supply/eliminate single points of failure once I have enough pis in the cluster to seriously consider/plan that... but for now, one PSU should do for as small as this project is right now.
As to whether I want the ability to power 16 per PSU or 8 per PSU, I guess that's where I'm looking for some input/suggestions. What do people typically do/what's possible to do with the full 2.5 amp current? I'd like to have each USB port be switchable on/off if possible, as well. Can someone recommend where I can get parts for this/parts that they have used for projects like this and where to get them?
(This is where still having RadioShack would be nice..... lol)