There's a 7805 5V controller onboard. It can take 8-35V as an input (actually whatever voltage the steppers need) and output 5V for the UCN chips
Depending on the software you use, you can use NC or that as the switch being pressed and it will stop. You can spare some parallel port pins by...
Like I said, in my opinion EMC2. TurboCNC is easy to setup and runs on old PCs but is rather limited in capabilities. I didn't get into much detail with Mach, but EMC2 seems very impressive. It even has ladder programming (language used in PLCs).
Small inkjet printer motors. This is a small...
Nowhere. It's created on the board. Look at the PCB. It's my revised version but the basics are the same:
The 12v is connected to the two large pads on the right. The three pads next to them to the left are for the 7805. The lowest (square) is 12v input, the middle is GND and the topmost is...
It doesn't. It has an on-board 5v power supply circuit with the 7805 regulator. It takes a 8-24v input.
You connect 12v to the board. It goes straight to the motors. It also goes through the 7805 to provide 5v for the chips.
Nikolas
MP, his main problem is that he has a bipolar motor while the board only supports unipolar ones (5,6,8 wire motrors).
There is a circuit that can be added to the board to drive bipolar motors (I have it around somewhere) but it needs 12 power transistors per motor. It's much better to just look...
On the project page you'll find the schematic, pcb layout and parts overlay in *.ps format.
Here is my modification, I changed it a bit to suit my needs.
Nikolas
Audioguru, heatsinks are actually extrusions, not casts. I've seen a cast heatsink from an old Russian (or should I say Soviet) appliance and it was UGLY!
Nikolas
Just kidding.
On the serious side, I think that someone should have the Greek fonts installed to be able to read what you wrote. Otherwise they would come up looking like skandinavian. The unicode fonts where supposed to solve this problem but very few font creators bother to inlude all the...