Originally shared by Ray Kholodovsky (Cohesion3D)
DIY Smoothieboard.
A while back, @Arthur_Wolf put a bounty on a PCB design for a single sided board that could be milled on a CNC which ran smoothie and had everything you’d need: ATX PSU input, 5 motor driver sockets, MOSFETs, GLCD connectors, and more! The original post is here: https://plus.google.com/+ArthurWolf/posts/hg7bv7CA7ev
The board is under 100x150mm so you can make it from a relatively common size of copper clad that’s available at all the usually places, and the main tracks are 20/ 20 mil (width and spacing) while the finer details are 10/ 10 mil. This means you could make a basic motion board with a 0.5mm end mill and a crappy machine, but realistically you should use a 0.25mm/ 10 mil/ #87 end mill which is still very accessible.
But you may say to yourself, Ray, I see the sockets for the pololu drivers, the MOSFETs, and the connectors, but where is the smoothie? All you’ve got here is a dumb breakout board. Precisely!
What I’ve done is take the entire brain behind Smoothie: the LPC1769 chip, MicroSD socket, USB jack, and all the tiny and high speed components needed for those to function, and put it onto this tiny 1.2 inch square (that’s 30x30mm) that I call the Smoothie Stamp. It is entirely self contained and breaks out all the signals for the 5 motor drivers, 6 mosfets, thermistors, endstops, and even regulates its own 3.3v from 5v USB power.
This lets anyone embed a fully functioning smoothie brain into a carrier board of their own creation, with exactly the drivers, peripherals, and connectors they want.
I’m looking forward to my smoothieboard v2, please