I'm now the documentation lead at brewtroller. We've got a basic implementation guide and some other docs there, I'm hoping to explain in more detail how you can put one together. Basically, you order a board, temperature sensors, some kinds of temperature wells, some relays, and add it to your existing setup of MLT, HLT, BK etc. You can control either all heating elements, if wanted, or a march pump recirculating through a element heated HLT w/ HEX coil, or a recirc pump through a RIMS setup. Mines one of the easier setups I have two elements that are automated. I have a 1650 watt 120v element in my HLT, and use the brewtroller to keep that (using PID software algorithm) to the right temperature, and I have a HEX coil in it, that I pump my wort from the MLT into the coil w/ the march pump. I still have to manually reconnect all my QD hoses to the right setup in between steps. BUT you can also control solenoid valves to automatically open and close at the right times to make everything hard plumbed. You can also setup pressure sensors to detect volume of liquids transferred, etc. There are a lot of ways to get done, what you want done, how you want it done, and thus, why I think brewtroller is the best bet, you can start simple like I have, and w/ the same control board, add on all kinds of automation. Right now we're also working on a logging feature so you can see things over time, like temperatures etc. In the end, you just need to decide what is the best bet for you.