Can't recover from hanging printer

imqqmi

I just upgraded from Repetier Host 1.5.6 to 1.6.1. I noticed the printer locked up during printing, when it got to the second layer it locked up. Usually Repetier is able to recover from this by sending a reset signal to the Arduino (using Arduino + Ramps 1.4). The Disconnect button remained green, and clicking on it didn't do anything. Hitting the emergency stop didn't do anything while the printer kept heating the bed and head. I suspect the usb to serial connection got lost.

Usually unplugging the USB while Repetier is disconnected works without restarting Repetier host. Not this time, I had to close it and start it, then it worked again. Just wanted to report on this. It has happened once, if it happens again I will report back. I've seen that there are some changes to the reset condition in the change log so it may be that causes some issues.

I love the new and improved multi extuder support. Selecting only one extruder will not heat up the other, big thumbs up! Keep up the good work!

Cheers!
Imqqmi

Repetier

Serial connection in .NET is a mess due to bad implementation of the base classes. That is something we have unfortunately to live with. Especially on hard serial crashes - whatever happens behind the scenes when this occurs - can irritate the host.