A quick update. Probing with the float switch works as it should. Is this because with the float switch the movement is so much greater(.005" vs .115")?
I am a very poor coder but it looks to me the difference is that the float switch logic is looking for the float switch offset to not be exceeded and there is no such offset for ohmic probing. I can see how the travel can easily exceed zero_target with no sheet deflection and a bit of debounce.
I know why this wasn't a problem before. I was doing the line test cuts on the skeleton of sheet that I had already cut productions parts out of. So I was testing on a pre warped very flexible piece of material.
I just want a display that isn't jumping around too much.
I am different than most users in that I mostly cut one material and thickness. So if we use the HT rule that you need to hold your cut distance to better than +/-.005" for good cut quality. This is about +/- 6 arcvolts on my system (.070"/74v=.000810811in/v). If you are using standard Duramax consumables you are closer to +/-11v. I find on my system using a THCad card for arc voltage measurement that I get about .1 to .2 scaled volts noise whether I am cutting or not. So for me not seeing any fractions is ok. On the system I built I can only set the arcvoltage to a 1v resolution.
