Running XP, Mach3, gecko G540.
So far, I've been successful at assembling my 4x4 CNC machine and getting it to run while connected to my Dremel tool which is manually switched on by me before running the gcode through Mach3:
CNC: dremel and plastic. - YouTube
I'm trying to trigger the Dremel (or whatever other tool I plan on running) with the output on the G540, but I'm having a heck of a time. Here is what I've confirmed:
1. Mach3 is set up correctly: I am seeing 3.3v at the parallel port at pin #17 on the computer when I toggle the spindle control in Mach3.
2. The parallel cable is good: I see just under 3.3v at the other end of the parallel cable on pin #17.
3. My understanding of the how the output pin grounds out when activated is good, and I have wired up my test relay correctly: V48+ on one end of the coil, and output pin #5 on the other.
4. The relay itself is good: I've connected one end of the coil to V48+ and the other to V48-, and the relay kicks over just fine.
Anybody familiar enough with the g540 to give me a rundown on why my relay isn't kicking over as expected? What else can I test to trace down the problem? Do I need more than 3.3v at pin #17? When I get home, I can try running a 5v power supply to it to see if it activates output pin #5, but in the meanwhile, is there anything else I might be overlooking?
Thanks in advance!