#robotics Logs

Mar 10 2019

01:04 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/micro7seg/slide.htm
01:08 AM rue_mohr: and there it be, there might be usefull things aquired from having done it
03:53 AM rue_mohr: ok, so its just about 1am
03:53 AM rue_mohr: on the 4'x8' cnc, I wonder what kinda motors I should use
03:54 AM rue_mohr: the steppers I have aren't gonna cut it for sure.
03:55 AM rue_mohr: I wonder how my skills are for doing it DC servo
03:55 AM rue_mohr: assuming I'm going for 0.7degrees/step
03:55 AM rue_mohr: I'd want lines @ about 0.35
03:55 AM rue_mohr: no, 0.07
03:55 AM rue_mohr: fine, ok
03:56 AM rue_mohr: 2000ppr
03:56 AM rue_mohr: but they can be huge encoder wheels
03:56 AM rue_mohr: hmm
03:57 AM rue_mohr: waaait, freq response...
03:57 AM rue_mohr: ok
03:58 AM rue_mohr: 500Khz
03:58 AM rue_mohr: ok
03:58 AM rue_mohr: 250RPS
03:58 AM rue_mohr: 15000
03:58 AM rue_mohr: rpm
03:59 AM rue_mohr: ok
03:59 AM rue_mohr: no wait,
03:59 AM rue_mohr: what
03:59 AM rue_mohr: you cant do 500Khz encoder
03:59 AM rue_mohr: why not
03:59 AM rue_mohr: they dont respond that fast
03:59 AM rue_mohr: arg
04:01 AM rue_mohr: you didn't try using RF transistors tho did you
04:01 AM rue_mohr: well no...
04:05 AM rue_mohr: hmm
04:06 AM rue_mohr: might be better of with a linear variable cap
04:06 AM rue_mohr: two, 90 degrees outa phase
04:07 AM rue_mohr: or
04:07 AM rue_mohr: or linear positioning
02:34 PM rue_mohr: --
04:39 PM logicmoo is now known as dmiles