Proximity Sensors / Mach3 not showing

[Jonathan]

Contacted the Ebay Member with the sensors. Replyed that I can go direct to the parallel port without the BOB. I guess I just change the "Port" setting in Mach3 "ports and pins" ?

It doesn't say in the listing (Edit: Just spotted the datasheet in the eBay listing, which does say open-collector), but the inductive sensors are probably an open collector output, in which case you need a pull-up resistor from the signal to +5V. Use something like 4.7k, exact value isn't critical.

You're much less likely to have problems with noise if you use a breakout board and run the sensors at a higher voltage. Connecting to the parallel port directly can work, just make sure you connect it up correctly on the first go otherwise the port could be damaged.