I have a problem of jog hotkeys sometimes getting "stuck" resulting ina runaway gantry. I have searched the forums and found suggestions that it may be due to a bad mouse, short circuited wires, keygrabber trojan software, anti-virus software... etc. But I am using keyboard hotkeys (no mouse) on a computer that has networking disabled and anti-virus disabled and is unning only Mach3, and this problem is repeatable at will.
If I jog an axis in Step mode, all is fine. If I jog an axis in Continuous mode but hold the key down only briefly, all is fine. If I jog an axis in Continuous mode but hold the key down for longer than 3 seconds or so, the jog does not stop when I take my fnger off the key. Result is runaway gantry. Only way to stop a table crash is E-stop.
I think this has something to do with key-repeat filling up an input buffer with keystrokes (sort of like when you hold down the 'a' key while typing and get 'aaaaaaaaaaa'. Only for some reason Mach3 is not "consuming" those keystrokes but perhaps is just polling key state?
Has anyone been able to solve their runaway jog key problems through software confguration??
Thanks. Like I said, I can reproduce this at will. It is NOT an intermittent hardware problem or malware.