I am on a project of building a 3-axis CNC milling machine. I have purchased the breakout board from CNC 4 PC, stepper motors and gecko drives G203V. I am using MACH 3 as the software, so I'm using the parallel port to send out commands (PWM of 5V).
When I read the data sheet for limit switches I found from RS Australia, the rated voltage is usually 8, 14, 30 and upto 250 VDC. Where do I get these voltage supplies? Initially I thought the limit switches will be powered by the 5V on the parallel port. How should the limit switches get power from, the parallel port, or some other power supplies?
Lastly, do you guys have any good supplies of limit switches? I am looking for $10 to $30 and I might need 6 of them.
Thanks in advance!