For anyone else wishing to use a wired probe and tool setter, I hope this helps. The schematic below is specific to an inexpensive amazon tool setter and Centroid KP3 probe, but any probe and TT that uses a normally closed circuit should work. The Tormach TT and Passive probe will work great. The only caveat I can think of is that if your probe has an LED light that lights when it is triggered, you may have to add a pull up/down resistor to make the input recognize the signal. I don’t think this will be necessary as I did not and most small LED’s pull around the same current.
My workflow is such that I remove my probe and TT from the machine when I am not using them. I wired them so the cables plug in at the front of the machine and the wires fit easily in a void in the bottom right-hand corner of the door. To accomplish this I 3d printed a box to contain the two connectors for the probe to plug into. The box has magnets on the back that stick to the front of the mill. This box will only fit in the space shown if you lower the keyboard (Another Post).
Probe and Tool Setter
The wires from this box pass easily with all the other wires that connect to PathPilot and can very easily be fished to the rear of the machine.
Since the probe and TT use only two wires each, I ran a single 4 conductor shieled cable to the rear of the machine. These connect directly to the Tormach Wired probe adapter cable.
On a separate note, like many on this forum, I am a hobbyist and look for lower cost options to get the job done. My probe is not a cheapy at about $800.00 and fairly accurate (test results below). For fun I thought I would use it indirectly to see how repeatable the $65.00 tool setter ($50.00 when I bought it a year ago) is. I probed the top of my vise and set the Z-axis coordinate to 0. Repeatedly probed the top about 10 more times measuring the actual Z height (not resetting the Z value). Every time I got the same exact result Z-0.0000. This confirms that the machine and probe are repeatable to 1/10,000!
I then put a tool in the spindle and measured its length. I repeated this 10 times. The value changed by no more than .0003. This is more than workable for my hobby work.
I hope this is helpful
Best… Richard
Schematic and Resources:
Tormach Forum KP3 Probe & TT Wiring.pdf (542.9 KB)
Centriod kp3 Report .pdf (583.5 KB)