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General Mach Discussion / Re: RPM and counting ?
« on: April 02, 2010, 01:25:34 AM »
I am running into a similar situation. I have a spindle sensor that I added onto my lathe CNC conversion and am having trouble getting it working. The sensor requires 12 volts to power it and since I do not have a 12 volt source on my board (Hobby-CNC driver board) I am using an old PC power supply. I have power going to the sensor and I have the "normally closed" wire going to pin 10. The sensor also has a "normally open" wire which I am not using currently. I can get a signal to show in my diags screen but Mach3 is not getting feedback from the sensor some how. It does not show the Limit opening and closing when I rotate the spindle. I attached a pic of the sensor, any ideas fellas? Thanks!!