I'm using ClearPath servos so they aren't a normal driver. They need 5-24V signals. I was getting really bad results and drifts of 0.1" or so over the 20mm calibration cube. I presume because steps are being missed by the driver at the bottom edge of their usable range. I rewired the old CNC controller this morning and am using that again. It's not producing any drift at all and outputs either 12 or 24v signals to the controller; I forget which.

I have a very large, ~20lb 1600watt custom heated bed that autotune doesn't play nice with. First, it would stop the process because the temp wouldn't rise fast enough and it assumed there was a fault. I found the "dead time" variable and increased it to 90 seconds and then it was fine.

That is, until it get to temp and started cooling. Now it errors out saying it's not cooling fast enough. Yeah, it takes a while. How do I get it to be more patient?

Even if I provide the external 12v supply?

I'm using ClearPath motors that need at least 5v step and direction but ideally 12 or 24 volt. I have 5v 12v and 24v rails in my machine, all common ground. I'm running them now with the + connection connected to the 5v rail and the - connected to the expansion board. Can I use 12v or even 24v instead? At what point will that damage the board?

Any other tricks?