While I was looking for information on how to setup an optical sensor for spindle speed sense, I came across the "31228 - Duality Lathe Spindle Speed Sensor Module" sold by Tormach. I tried asking them if this sensor could be plugged into the PCNC1100 for spindle speed sense and received a non-answer back.
To my uneducated eye, on the surface it seems like this might be a quick plug in way to add a spindle speed sensor module. (I wouldn't mind building my own QRD1114 based sensor unit, but I haven't found info on how to setup the DIN connection to the mill itself from the sensor, yet.)
Has anyone else seen this? Seen why it could or couldn't work? I'm thinking if the sensor itself is able to provide the signal, then it might just take some marks (I read about silver sharpie working) on the spindle and maybe a mounting bracket (zip ties? lol maybe something a little better than that.)
Thanks for any discussion on methods of adding spindle velocity sensing to the mill spindle.