I have the 4 Axis Driver Board and am trying to figure out how to use a pin signal via Mach3 to start/stop a Dispensing Valve Driver.
What I`ve done in Mach3 is set pin 16 as an output pin for Spindle on/off commands. I`d like to use M3 (spindle on) and M5 (spindle off) commands within my Gcode to run the valve.
Unfortunately I am only measuring 3.90 volts between pin 16 and ground which is not enough to kick start the valve.
If I physically touch the valve wire onto the VCC Connector on the board it gets the 5v signal and the valve works fine. So I`m happy that all my valve wiring is correct, I just need to somehow get the full 5v signal.
Any advice to overcome my problem would be greatly appreciated.
I`ve attached a pic of my circuit.
You`ll see I`ve used a 10k Ohm SIP Resistor soldered onto the Xylotex for my limit switches which works well. The Limit switches are also doubling for machine home switches working on X- Y- and Z+.
This concept has been taken from the fab@home setup.