Is anyone on here driving their printers with a BeBoPr or K9 board and a BeagleBoneBlack using MachineKit and LinuxCNC, http://bb-lcnc.blogspot.com/p/machinekit_16.html? Im working on setting mine up to be driven with the BBB and a new breakout board built by Probotix.com. The board is here; http://www.probotix.com/wiki/index.php/PBX-BB
The Board is built to interface with their current selection of stepper drivers, which are fairly oversized for a normal printer but they are working on some solutions for printers. Anyway Ive built up a protoboard to use Pololu Drivers, but I will need an answer to drive my heated bed and hot end.
Ive thought external PID controllers from like Amazon might be the easy answer, but controlling temp through the Gcode is nice.
Any ideas? Just spit balling here. I can use the controller to drive my CNC Mill if I wanted to, But driving my printer with LinuxCNC would be a fun time I think.
I dont like the BeBoPr, they kept the low level part closed source. Showing they really don’t care about the community they want to be part of and sell their product to.
The Replicape has just been released. Though I was hoping it would be much cheaper, but I suppose it does come with integrated stepper drivers which are usually around $10 each.
I dont either. Hence I’m going with the board above 
I like the idea of it because I have 2 other machines built with their components. And their are based 10 minutes from where I work. And they are cool guys, and the board is sitting on my desk… Etc etc
Ahhh cool, I built an freehand circuit with a FET to control my fans, I wonder if something similar but for higher current could be built on a tiny piece of strip board? Otherwise, those cheap H - Bridge modules made for brushed dc motors might carry enough current for a hotend?
Most people seem to be using a SSR for their bed now, gives the possibility of upgrading to a silicon heatpad at some point too!