i'm using an ac to dc power converter for everything DC related. it's rated at 12v and 2.1a. the thing is, it gets wired directly to mains. Search amazon for dc to dc regulator and you'll find a plethora of options to bring your 30v down to whatever you need. I'm using
and it came preset to 5v out.
A lot of my hardware decisions were directly taken from Hunter's controller. w/o his controller I'd still be sitting on 2 Pi's thinking, "gosh... i should get started"
You'll notice a lot of similarities between the two units as I start building it within a box for actual use. I think mine may end up simpler in appearance because I'm not using any mechanical switches, and both the Pi and relay board require 5v, so i only have 1 dc to dc regulator.
As I'm learning about electronics, as I go, and what I want/need to use, you'll start to see a larger separation between the units when I get to work on my second model.
The mosfet board won't be used with that version as I think I very much prefer the open collector driver. it's a much simpler, and MUCH cheaper, item to use. it'll just require some building on my part.
Once I get prototype 2 done I'll release the code. I'll also be working with a buddy who keeps a reef to build a controller for him to test. something I'm happy to do for others post prototype 2 creation, for component costs (including shipping) and nominal charge for time to put the unit together and shipping.
Once prototype 2 is done for the basic controller I'll move on to ATO code/hardware additions. After that I think I'm going to build an RGB LED fixture and software to control that w/ the controller. I'm dreaming of a full day cycle including dawn and dusk colors, to moonlighting, to everyone's favorite "thunder storm"
I've got a lot planned for this thing!