Eh, I've seen many Reef Pi or "opensource" controllers pushed out there, some just are happy to do what they do and want to share on message boards giving away what they do, others want to make a business out of it ReefPi comes to mind. Can't quite place this setup though, it seems like he's using Kickstarter just to sell the things as a store front. That power outlet part is ugly as sin though, and the difference between paying someone to make me something it really has to look like something I couldn't make, and that looks like some basic woodshop classes mixed with some simple wiring.
If you wanted a full reef controller the Advanced Saltwater one looks like the one you should aim for but if you're paying $500, but if you're doing that you might as well get an Apex EL. I think the $14 board is intriguing if he will sell a DIY board for $14 that'd be great little toy to screw around with if you're a hobby person. But other than maybe as a light timer, which FYI lights you buy are NOT PWM they're 0-10V control, I don't think I'd look into this as being a "safeguard" for my tank like I would an Apex or a Profilux controller