missed keystrokes problem, back with a vengeance.
Greetings everybody;
I am in the process of bringing a nearly 70 yo Sheldon lathe back to
life, useing an raspberry-pi 3b for the machine controller.
However, I have now had 5 different keyboards plugged into it, some
wired, some wireless, and none of them can give me a dependable response
to a key, and the error seems much worse for the key-up event. When
driving the machine by hand as we often do for one-offs, missing a keyup
event can be disastrous for the part being made because it keeps on
cutting until you've given that, or another key, a quick tap to stop the
unwanted motion.
There is something funkity in the usb keyboard handling that can get much
worse with a reboot, or get almost perfect with a reboot.
Its all uptodate a/o yesterday. The psu is a 4 amp box, making 5.07 volts
solidly. Verified with a 100 Mhz scope.
What can I do to fix this?
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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