#robotics Logs

Apr 30 2019

12:06 AM rue_shop1: MLE_Online,
12:10 AM MLE_Online: it's working!
12:10 AM rue_shop1: :)
12:10 AM MLE_Online: how did you do that thing with the red text right now?
12:10 AM rue_shop1: MLE_Online, its hilighting when it sees your name
12:10 AM MLE_Online: ah ok!
12:10 AM rue_shop1: its good for busy channels, tho, no channels are ever busy anymore
12:10 AM MLE_Online: that makes sense
12:10 AM MLE_Online: so i wanted to ask you more about that zener diode
12:10 AM rue_shop1: yea
12:10 AM MLE_Online: no one at the group could figure out what effect having the wrong voltage zener in there would do
12:10 AM MLE_Online: besides set the reference voltage wrong
12:10 AM MLE_Online: but they didnt know what effect that would have on the supply
12:12 AM MLE_Online: i use the one at the group when im there
12:12 AM MLE_Online: and it is pretty handy
12:12 AM rue_shop1: hmmm
12:12 AM rue_shop1: Tom_L, knows the alg to make a balancing robot
12:13 AM rue_shop1: something doesn't add up in my head
12:13 AM rue_shop1: its like
12:13 AM MLE_Online: Talk to Ross from Gear Down for What on Twitter
12:13 AM MLE_Online: he just made a balancing robot
12:13 AM rue_shop1: yea
12:13 AM rue_shop1: good point
12:14 AM rue_shop1: I didn't notice if he posted code
12:14 AM MLE_Online: i didnt either, but i bet he would share
12:14 AM rue_shop1: just thinking thru it...
12:15 AM rue_shop1: I suppose the idea is to find the poisition that causes you not to start to fall
12:15 AM rue_shop1: and to react to any falling with a countermove
12:15 AM rue_shop1: I have a hell of a headache and can't think it thru
12:15 AM MLE_Online: I know he did a lot of work adjusting his PID for that
12:16 AM rue_shop1: yes, but its about what the PID is controlling
12:16 AM rue_shop1: you could tell the PID to keep your robot at a partilclar angle
12:16 AM rue_shop1: I suppose to keep the "1G" "down"
12:17 AM rue_shop1: but then if a load tipped your robot it would go rolling off like a segway
12:17 AM MLE_Online: yea
12:17 AM rue_shop1: instead of just adjusting its "up" defiition to not tip over
12:18 AM MLE_Online: that makes sense
12:19 AM MLE_Online: are you going to make a balancing robot like ross's?
12:19 AM MLE_Online: or different?
12:19 AM rue_shop1: maybe
12:19 AM rue_shop1: well, I'v been interested in making a balancing robot for a while
12:19 AM rue_shop1: didn't have an IMU as easy to use as that one from the ABS controller
12:19 AM MLE_Online: imu?
12:20 AM rue_shop1: gyro
12:20 AM rue_shop1: I mean, this thing outputs an analog votage, it doesn't get easier than that
12:21 AM MLE_Online: oh that thing
12:21 AM rue_shop1: http://tom-itx.no-ip.biz:81/~webpage/maxbot/maxbot_index.php
12:22 AM rue_shop1: check that out, uses a tail and a pot for balancing
12:22 AM MLE_Online: alexander kruglikov didn't seem impressed with it
12:22 AM rue_shop1: that was by Tom_L
12:22 AM rue_shop1: na, but I can see that, doesn't like analog
12:22 AM MLE_Online: a lot of people don't like analog
12:22 AM MLE_Online: i dont know why
12:22 AM MLE_Online: analog is fun
12:22 AM rue_shop1: :)
12:24 AM MLE_Online: i mean, digital is cool, too
12:24 AM MLE_Online: but analog is more fun
12:24 AM MLE_Online: and a lot of people hate analog
12:25 AM rue_shop1: so
12:26 AM rue_shop1: whats the next project then!?
12:26 AM rue_shop1: I been putting lots of time into the garden/yard cleanup / shop cleanup
12:26 AM rue_shop1: so not a lot of project stuff
12:26 AM MLE_Online: back to the cyclops CRT bone arm thing
12:26 AM rue_shop1: and I'v been making paint sprayers too
12:26 AM rue_shop1: ah yea
12:26 AM MLE_Online: and when that's done
12:27 AM MLE_Online: maybe the arduino phone
12:27 AM rue_shop1: you just gradually making more and more of those lights?
12:27 AM MLE_Online: yea
12:27 AM rue_shop1: cool, you got a handfull more focus than me
12:27 AM MLE_Online: i'll make several more
12:28 AM MLE_Online: some of the older ones I made last year that i repurposed for this new version don't stay lit long at night
12:28 AM MLE_Online: so i need to replace their batteries
12:28 AM MLE_Online: and then after maker faire, maybe back to the VFD
12:28 AM MLE_Online: maybe make the death clock
12:28 AM rue_shop1: yea, in the winter they cant charge back up and the batteries get damaged
12:29 AM rue_shop1: is rodger still working on the vfd stuff?
12:29 AM MLE_Online: yea
12:29 AM MLE_Online: well
12:29 AM MLE_Online: we worked on it tonight after the power supply
12:29 AM MLE_Online: we figured out the bug
12:29 AM MLE_Online: and fixed it
12:29 AM rue_shop1: drivers backwards?
12:30 AM MLE_Online: no, there was a short between that inductive load pin on one chip
12:30 AM rue_shop1: oh!
12:30 AM MLE_Online: and a segment pin on the next chip
12:30 AM MLE_Online: a short within the perfboard
12:30 AM rue_shop1: heh, mmmm china
12:31 AM MLE_Online: so i just cut that pin off the chip and it all worked like it is supposed to
12:31 AM MLE_Online: yep, china
12:31 AM MLE_Online: but yeah, he has to get his rover ready for maker faire
12:31 AM MLE_Online: so he is focused on that right now
12:31 AM rue_shop1: thats a good amount of work
12:32 AM rue_shop1: no maker fairs over here anymore
12:32 AM MLE_Online: fortunately, it's just one mini project
12:32 AM MLE_Online: right now his rover is its own wifi network and he wrote a webapp for it
12:32 AM rue_shop1: :)
12:32 AM MLE_Online: so you go on his phone and drive the rover around with that webapp
12:33 AM MLE_Online: but at maker faire, there might be too much wifi interference
12:33 AM MLE_Online: because he had that problem at SCALE
12:33 AM rue_shop1: yes, I got a tablet fro doing just that
12:33 AM MLE_Online: so he's building a tethered joystick for it
12:33 AM rue_shop1: I need to find a local guy who does drone racing and get advise on a fpv system
12:34 AM MLE_Online: fpv for what?
12:34 AM rue_shop1: all sorts of robot run
12:34 AM rue_shop1: fun
12:34 AM MLE_Online: which robot is going to be your telepresence?
12:35 AM rue_shop1: any of them would be fun
12:35 AM rue_shop1: I HAD wanted to make a robot to sneak into the bush, camp, and watch the deer
12:35 AM rue_shop1: I have lots of new toys to make that doable
12:35 AM MLE_Online: you should put it on mowerbot
12:36 AM MLE_Online: and pretend you're the one mowing the lawn
12:36 AM MLE_Online: for nostalgia sake
12:36 AM rue_shop1: :)
12:36 AM rue_shop1: yea, thats another todo, I have to get the gas mower going again and clearup all the stuff the mowerbot cant do
12:37 AM MLE_Online: that what a push mower is for
12:38 AM MLE_Online: then build a bipedal robot to push the push mower
12:38 AM rue_mohr: :)
12:38 AM rue_mohr: did you see the v2 mowerbot?
12:38 AM rue_mohr: http://ruemohr.org/~ircjunk/robots/ .... mmmm mowerbot2....
12:39 AM rue_mohr: http://ruemohr.org/~ircjunk/robots/mowerbot2/p1020374.jpg
12:39 AM rue_mohr: thats a good over-all image
12:39 AM rue_mohr: wheelchair is both stretched and widened
12:39 AM MLE_Online: that's much larger
12:39 AM rue_mohr: yup
12:40 AM MLE_Online: if you were nearby, i would give you the two wheelchair motors with gearboxes and wheels i have
12:40 AM rue_mohr: it needs drive-assist, trying to drive it by hand with the differential like that, it insane
12:40 AM MLE_Online: i don't want them, but i don't want to throw them away
12:40 AM MLE_Online: and no one will take them
12:40 AM rue_mohr: heh, list on craigslist
12:40 AM rue_mohr: say for battlebot or cnc machine
12:40 AM MLE_Online: i tried
12:40 AM MLE_Online: no one wanted them
12:40 AM rue_mohr: :/
12:41 AM MLE_Online: even at caltech no one wanted them
12:43 AM rue_mohr: well, they got rid of that power supply
12:44 AM rue_mohr: if the people who were using it were good students theyd have easily known how to fix it
12:44 AM rue_mohr: I really need to finish that supply I started
12:44 AM rue_mohr: the switching power converter is being a nightmare tho
12:45 AM rue_mohr: (pardon me, hour late for bed, just goint to the kitchen to burn supper)
12:46 AM MLE_Online: i gotta go to bed too
12:46 AM MLE_Online: the power supply was over in the physics department, so they are mostly thinking about stars over there
12:46 AM MLE_Online: not fixing stuff
12:46 AM MLE_Online: the engineering students would have fixed it probably
12:47 AM MLE_Online: anyhow, good night rue_mohr!
12:50 AM rue_mohr: gnight
12:51 AM SleepyTurtle: night
01:03 PM marder: hi there
01:04 PM marder: do younknow if someone had makeof
01:04 PM marder: https://www.youtube.com/watch?v=lw2T04yKkpY
01:05 PM marder: https://www.youtube.com/watch?v=9gMX_hR-RoM
01:05 PM marder: awesome shit
01:13 PM marder: i worked with KUKA
01:13 PM marder: you build your own devs
01:15 PM marder: no ops online
01:16 PM marder: https://www.youtube.com/watch?v=r2nAMaJ4Bac
01:16 PM marder: my girlfriend is a robot
01:16 PM marder: yeeeeeeha
01:17 PM marder: nobody in here wanna talk about alpha one handaxis singularity?
01:19 PM marder: and how to avoid by controlling the the coordinates
01:19 PM marder: lol
01:19 PM marder: wish you a nice 1. mayday
04:01 PM Elon_Satoshi is now known as Guest11549
05:18 PM SpeedEvil is now known as Guest45791
07:19 PM rue_mohr: hmm