#garfield Logs

Jan 23 2022

11:49 AM aandrew: rue_mohr: I'm confused. how are you getting back emf from a stopped motor to know its position
11:57 AM aandrew: a stopped brushed DC motor to boot
11:57 AM rue_bed: I only get the backemf when its turning
11:57 AM rue_bed: and I accumulate it for position
11:57 AM aandrew: you're biasing one leg at 2.5V, ADC1 is +/- of that based on motor movement
11:57 AM aandrew: er no
11:57 AM aandrew: LMC6482 is a diffamp feeding amplified back emf into adc2, but what are you using adc1 for
11:59 AM aandrew: actually the other thing in there is the force feedbac thing
11:59 AM rue_bed: I have a polprog folder
11:59 AM aandrew: holy crap you have a lot of projects in git
11:59 AM rue_bed: not really
11:59 AM rue_bed: its a lot like a junk drawer
12:00 PM rue_bed: there are a number of almost the same thing, and a bunch of dumps of misc
12:00 PM aandrew: heh
12:00 PM aandrew: that would be my ~/Downloads/github directory, every time I see a neat thing I clone it and write myself a note that I've done that since I don't trust the cloud
12:00 PM rue_bed: there is a lot of stuff Iv not posted that I should
12:01 PM rue_bed: but nobody really seems interested in much, so I havn't bothered
12:01 PM aandrew: every year or so I do something like for a in * ; do (cd $a && git pull) ; done
12:01 PM polprog: whats in the polprog folder
12:01 PM aandrew: nudez
12:02 PM aandrew: that's also a cute dc motor holder
12:02 PM rue_bed: oh, must be on the other machine, this one just has "rclp_git"
12:02 PM aandrew: I have also not done a damn thing with your battery holder other than keep a battery in it and play with it almost daily like a fidget toy
12:03 PM rue_bed: oh, damn, I need to post the motor holder in there too!
12:03 PM rue_bed: hah
12:03 PM rue_bed: made a joule theif and have it power an led
12:03 PM rue_bed: the thingiverse collection is getting large
12:04 PM rue_bed: tho, I'm thinking I should make a 3d object template for github
12:04 PM rue_bed: I'm not so sure thingiverse isn
12:04 PM rue_bed: t going to just implode one day
12:06 PM aandrew: yeah thingiverse is one hard drive error away from imploding, it seems it's completely unmaintained, no bugfixes or feature updates, nada
12:06 PM rue_mohr: I think the parent company isn't making a mind selling 3d printers
12:07 PM aandrew: sure, it'd be nice if they actually supported the damn site by hiring at least a couple web devs and having an issue tracker
12:10 PM rue_mohr: they have managed to fix a fe things
12:10 PM rue_mohr: that they'd broken earlier
12:10 PM rue_mohr: I loved it when the template would bring up the defaults from someone elses thing
04:31 PM Tom_itx is now known as Tom_L