Okay, so I've been working on building one of these.
Anything worth doing is worth doing right, so I figured I'd get a networked RPi controller to do all my fermentation so I could just change things from remote computers/my phone and show off and be all cool and stuff.
However, this is my introduction into the world of Raspberry Pi, Ardunio, etc etc. I'm still trying to wrap my head around things. I decided to do a TeensyPi
because it supports control for multiple zones and pretty much does what I need it do do. I'm running into some really basic questions I need answered though.
1) My cooling will be done by 12v muffin fans
. I'm running 2 fans on each side of the fermentation chamber, one input and one output, to pull cold air from the chest freezer (where my kegs will be.) What I'm wondering is what I need to power the fans. I was looking at this
, a 120v to 12v 10a power supply. Would I just wire that to some solid state relays, to the DS2402 switches, or to the fans themselves? Wiring is really where most of my questions are. I'm still learning how to read wiring diagrams, so like I said, most of these questions are probably pretty basic.
2) The power supply recommended on the TeensyPi site is said to be "5vdc power supply capable of delivering at least 1 amp, 2 amps or more are probably preferable." He says he picked his up on ebay, but that (like it usually does in ebay searches) gives me back a myriad of options, so that part wasn't entirely clear. This
is what I assume he's referencing, but I just needed to confirm. I'm guessing this just runs off a wall outlet, which would in turn feed into the TeensyPi board in some fashion? Reading the wiring instructions, it wasn't exactly clear what this power supply was for (unless it was for running the switches/relays?)
3) Is there any recommended reading on this stuff you guys can suggest? I've got a few beginner level Ardunio books, but I don't know a lot about wiring this stuff, so if you've got any suggestions on reading for dummies/laymen, I'd really appreciate it.
Thanks guys. Reading this board has been a HUGE help during this journey.