New start

[Nr1madman]

He's getting the E-stop even when it's not configured for E-stop so it's not going to be noise on pins.!!

Nr1 are you running the uc300 with external 5v or using the USB.? . . . If later then use external 5v. Same with BOB.

I'm using the pc's 5v but from power supply not usb.
When I used standalone 5v psu I got connection loss issues.
The bob is still powered from 5v psu and 24v psu ..

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[m_c]

Is the E-stop a dedicated pin, or configurable to any pin?

[Nr1madman]

Is the E-stop a dedicated pin, or configurable to any pin?

Configurable to any pin.. get the same error when using pin 12 (like usual) but no wire connected :)

Gonna try to morrow to assign it to a pin or port thats not connected to anything but actually exist physically. Now when I disable e stop I assigned port 0 pin 0 and that doesn't exist..

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[m_c]

The non-existent pin may actually point to something that does exist.

I'd assign it to a pin that physically exists, and also wire the pin either high or low. I've got no idea how pins on UCNC controllers are configured/wired, so leaving it unconnected means it could be floating high/low.