Friday, December 7, 2012
Upgrade #1 Near Complete
I have finished the NEW circuit board. It is only "Perf-Board". Three EasyDriver boards, 10 bar LED and several screw terminals. Oh, yeah and miles of 22-gauge wire. Now the EasyDriver is able to operate at 1/8th, 1/4, half, and full step (2 phase) modes. 8 position DIP switch controls the desired mode and the LED lights up for each setting for each board.
Each of the EasyDriver boards is attached to the perf-board by use of break-away headers and female headers. I did this because more than likely this will NOT be the last circuit board upgrade for this CNC mill.
The limit switches are now hooked up to a separate area of the circuit board...
...along with each STEP/DIR and limit signal. Each limit signal has been coupled with a pull-up resistor to ease the strain on the printer port of the computer.
And, finally the stepper motor terminals.
I also installed two new stepper motors for the X and Y axis. These motors are a little stronger as well as having 400 steps/revolution (ie. high resolution).