#robotics Logs

May 29 2012

00:09 katsmeow-afk dc continuous
00:10 katsmeow-afk that's 120w, why am i surprised?
00:10 katsmeow-afk oh,, it's midnite
00:10 rue_mohr so...
00:10 rue_mohr you going to work tommorow?
00:10 rue_mohr :)
00:11 rue_mohr its too bad you dont have the funds to enjoy your circumstances
00:11 katsmeow-afk umm, prolly, lots to do around here, got that hole thru the cellar wall to enlarge and stuff full of pipe and recemet
00:11 katsmeow-afk for real
00:25 rue_mohr well I'v eaten
00:25 rue_mohr so off to bed
00:26 rue_mohr thanks for the tips, that worked out great
00:26 katsmeow-afk <curtsey>
00:30 rue_mohr http://www.buzzfeed.com/paws/extremely-awkward-animal-moments
00:43 rue_mohr if I need 12Vdown to the wheel I can put a power led in series with it, the voltage drop will help the regulator cope
00:46 rue_mohr If I'm not using quadrature decoding, I might not need a microcontroller at the bottom issueing serial data
00:46 rue_mohr maybe I can do a two tone thing for forward/reverse pulses
00:46 rue_mohr I have to have a controller at the top anyway to read the castor heading
00:46 tsmeow-afk looks conf
00:47 rue_mohr it can interpert and convert to serial
00:47 0b0t1 is wondering what the hell is going
00:48 rue_mohr where u is the high freq and i is a low freq, 4 pulses forward and 2 reverse might look like uuu uuu iii no that dosn't work
00:48 rue_mohr 4 tones...
00:48 rue_mohr hmm
00:48 katsmeow-afk yu were running two wires up anyhow? just run both signals up
00:49 rue_mohr yea, where uuuu is interperted as an up-pulse and iii is interperted as a down pulse
00:49 rue_mohr no, its an optic connection
00:49 rue_mohr 1 light beam
00:49 rue_mohr which frees me from the rotation in a noise immune way
00:49 katsmeow-afk o
00:49 rue_mohr two freq's would work
00:50 katsmeow-afk why did you say you were running two 32awg up the tubing?
00:50 rue_mohr I could use a 7474 and a 7414
00:50 rue_mohr yes, one for power and one for the led
00:50 katsmeow-afk [23:27] <rue_mohr> I can run 2 wires down the tube
00:50 rue_mohr but the power comes in over a brush
00:50 katsmeow-afk wires != fiberoptic
00:50 rue_mohr which the signal cant for noise reasons
00:50 rue_mohr led ont eh top of the bolt
00:50 katsmeow-afk oh
00:50 lt is a christmas t
00:51 rue_mohr :)
00:51 rue_mohr bolt, hi, what you up to?
00:52 bolt attempting to whip up a quick irc bot in bash script. no, there's absolutely no point in this, but i'm sick and don't really want to move and/or think
00:52 rue_mohr aaaah
00:52 rue_mohr bash, thats a challange
00:52 rue_mohr why not perl?
00:53 0b0t1 suggests
00:53 bolt done too many times already
00:54 rue_mohr maybe tommorow I'll play with a 7414 and 7474 to see if I can get a decodable output
00:58 rue_bed I could maybe use a diode and a resistor to overbias a 7414 oscillator
00:58 katsmeow-afk if you are concerend about noice, use the cmos
00:58 katsmeow-afk noise
00:58 rue_bed more diodes could merge the two oscillators
00:58 katsmeow-afk whatever the invertor is and a 4013
00:58 rue_bed yes
00:58 rue_bed I had to use cmos to get the signal on the scope
00:59 katsmeow-afk wierd
00:59 rue_bed the collectors of the optos are joined and so you need to pull the signal down
00:59 rue_bed the internal pullup in ttl was waaaay too strong
00:59 rue_bed with the cmos (I used a 4069) it only needed 10k pulldown
01:00 katsmeow-afk it was prolly more the low input voltage, you'd haveto pull down to 0.5v , which i bet the optos could not do
01:00 rue_bed there is no scmidtt inverter tho...
01:00 katsmeow-afk with the 4000 series, you only pull below vcc/2
01:00 rue_bed oh its cmos, prolly dont need the schmitt to oscillate
01:01 rue_bed ok so a 4013 and a 4069 might do it
01:01 rue_bed AND I dont have to use a regulator then
01:01 rue_bed run it off the 12V
01:02 rue_bed filtered a little
01:02 rue_bed hmmmmmmmm
01:03 katsmeow-afk prezactly
01:03 katsmeow-afk or 10v, if you have a 10v zener and a small resistor
01:03 rue_bed suspect cmos would draw less power too
01:03 katsmeow-afk much less
01:03 rue_bed I have some 7.5
01:03 katsmeow-afk i'd try it
01:04 katsmeow-afk never know ifit attacks the gas mower and gets noised by the spark plug
01:04 rue_bed I can play tommorow afte work
01:04 rue_bed heh
01:04 rue_bed the large mower will have a 360 bumper
01:05 rue_bed the old mower just has a forward bumper and 2 optic prox wiskers
01:05 tsmeow-afk nods sl
01:05 rue_bed it has wiskers made of optic proximity detectors
01:06 rue_bed set to about 17"
01:06 rue_bed dont have any more for hte new mowerbot tho
01:06 rue_bed the downside of them being optic is the grass triggers them
01:06 rue_bed so it makes the bot shy of tall grass
01:07 katsmeow-afk and flowers?
01:07 rue_bed yup
01:07 rue_bed but when it turns to avoid an obsticle it usually swings its ass over the obsticle, so, with soft things, it gradually expands out
01:08 rue_bed that and there is no backup sensor, so it backs over whatever it wants
01:08 rue_bed hence it humping the shubs
01:09 rue_bed there are a few odd, persistant behavours
01:09 rue_bed it likes to move uphill
01:10 katsmeow-afk might be related to wheel spin when tilted
01:11 katsmeow-afk why don't you use a local gps of some sort for it? like ultrasonics, they have very short wavelengths
01:11 rue_bed when I put it in the lower yard it almost immediatly books it to the top yard
01:11 rue_bed the old mower dosn't have enough brain for much
01:11 rue_bed its a 386 running a qbasic program
01:12 rue_bed its amazing the polling happens as fast as it does
01:13 katsmeow-afk if the mowerbot burps data, and the recievers around the proprty are connected to a faster puter, the location math can be done and the location sent back to the mowerbot
01:14 rue_bed yes
01:14 rue_bed remember the laser scanner?
01:14 katsmeow-afk the data can be: battery volts, speed, blade rpm, etc
01:14 katsmeow-afk yeas
01:14 rue_bed that was for local positioning
01:14 katsmeow-afk yeas, inside
01:14 rue_bed still want to finish that
01:14 rue_bed it could do outside
01:15 rue_bed uh, didn't tobbor already do that today?
01:15 katsmeow-afk you'd haveto put symbol things all over, people here would crucify you for the devil worship symbols
01:15 rue_bed I thought thats set to 12 hours
01:16 rue_bed the other point is to use AR glyphys
01:16 katsmeow-afk . 01:04:47am 05/29/12 Tuesday tobbor Remote host closed the connection .
01:16 katsmeow-afk . 01:04:54am 05/29/12 Tuesday tobbor Changing host .
01:16 rue_bed yea, ever 12 hours iirc
01:16 rue_bed gets around freenode instabilities
01:18 katsmeow-afk for such things in Tiggr, i do a continuous 45sec timer, and if the timer falls inside xx:00:00 and xx:01:00 , it causes an action, but it also sets a 2 minute blocking flag, so it cannot possibly fall in that xx:00:00 and xx:01:00 again
01:19 katsmeow-afk if i want a 12hr timer, i set 11:55, and then start the 45sec timer
01:19 katsmeow-afk otherwise, if i need accuracy, i set a 1 sec timer and actually test system clock
01:21 katsmeow-afk i need to go lay down, my uppr eyelids are falling down, and i am out of epoxy
01:22 katsmeow-afk gnites
07:23 KongfuPanda rue_mohr, how is your hexapod robot? can it walk yet?
08:56 rue_mohr I have to build and install 6 overload boards
08:57 rue_mohr which require minor mods to the motor drivers
08:57 rue_mohr and minor motor rewiring
08:57 rue_mohr but the servos are working
12:26 home so the physics of rovers!
12:26 home and other robots on other planets
12:26 home anyone familar with them?
12:27 katsmeow-afk familiar with physics? or rovers? or other planets?
13:02 rizlah I'm a physicist who moves around on other planets with a rover, what do you want to know?
13:02 rizlah :D
13:03 katsmeow-afk :-P @ home
13:05 rrywolf flops on katsmeow-afk's
13:06 tsmeow-afk looks at the floppy f
13:06 home rover phsyics
13:06 home kats.. blu
13:07 katsmeow-afk blu ?
13:08 Steffanx 3
13:08 rrywolf is a tired and sore w
13:08 Steffanx Poor furrywolf
13:09 tsmeow-afk is a tired kat, holding and pushing a jack hammer is tiring when so out of s
13:11 katsmeow-afk i'd rather be doing robot stuff
13:13 furrywolf you can do robot stuff with a lapwolfy!
13:13 katsmeow-afk i cannot even work on plumbing with a lapwolfie!
13:14 furrywolf :(
13:14 katsmeow-afk i purposefully designed the house with copious amounts of under-house space distributed around, for placement of things therein to avoid crazy (and poor) neighbors stealing them
13:14 Tom_itx why are you hammering for jack?
13:14 katsmeow-afk and right now my $260 water pump is not under the house
13:15 katsmeow-afk sometimes seems like all i do is for jack :-/
13:15 rrywolf spent 3 days and 42 miles moving a heavy sculpture, and needs a lap to curl up on and
13:15 katsmeow-afk furry did that by choice
13:16 tsmeow-afk puts the furry on Tom's lap, cause Tom isn't busy
13:16 Tom_itx oh contrary
13:16 rrywolf checks hackkitten's and spacekitteh's laps for availabi
13:17 tsmeow-afk gives furry a "byebye pet you later"
13:20 katsmeow-afk only difference i spose now in the water placement is the main intake is on the east side because that is where i could put the pool-tank in March this yr
13:20 katsmeow-afk but the west side is where the outside settling/overflow tanks were to go, and where i terraced the ground for them
13:21 katsmeow-afk i am surprised the dogs didn't show up on cue yesterday
13:22 katsmeow-afk i kep tthe cellar door shut, but i know jackhammering on the walls made some noise
13:22 furrywolf heh
13:23 katsmeow-afk you may remember, when in court for having a window fan in the cellar door, the DA's office said i had to allow the dogs in to bite me
13:23 Steffanx only in america
13:24 katsmeow-afk consequently, there's no bathroom vent, and no planned cross-ventilation fan, and no cellar fan, at all, anywhere
13:25 furrywolf get an ar15 with the largest magazine you're allowed to have in your area, and take up target practice in the back yard. see if the neighbor gets worried.
13:26 katsmeow-afk so anyhoo, it's 87F outside now, 78F inside, no air conditioner running
13:28 katsmeow-afk furry, funny thing, i was known as "that bitch with a gun" for not allowing theft or hunting on my property, and the woman in the trailer on the other side my my asshole neighbor also put a gun in the asshole's face a few yrs back
13:28 katsmeow-afk asshole went trespassing there and set off ona yelling spree, and she didn't like it any more than i did
13:29 furrywolf hrmm, how many pissed-off neighbors can you round up and use against him?
13:29 katsmeow-afk i dunno, cooperation isn't a common quality here, they'd rather not spend money in the legal system, cause they don't get results
13:30 katsmeow-afk this is not a civilised place
13:31 furrywolf heh
13:34 katsmeow-afk i drew the line about hunting real fast when i found two bullet holes in the house, one in glass skylight, one in wood sheathing prior to the concrete pour
13:34 katsmeow-afk there useto be constant gunfire on the other street, god barked, gun fired, god barked, gun fired
13:35 katsmeow-afk couple gods died, one guy died, this is not a civilised place
13:36 furrywolf someone up the road got drunk and shot his brother dead, but otherwise this neighborhood doesn't have too many people shooting each other.
13:36 furrywolf the police are by far the most dangerous group of individuals here, responsible for more deaths than every drunk, dope dealer, gang banger, nutjob, etc combined.
13:37 katsmeow-afk one neighbor, who was real fnd of driving drunk, ran over his gf's kid, killing it, ran over one of his gods, killing it, and it was a hoot he came home and was shooting *inside* his storage shed and stuck the shotgun out the door and blew away the light he had just installed that day
13:37 home wow
13:38 home you gotta record these people
13:38 home thats the only way you can get rid of them.
13:38 home gather information
13:38 home gather incentives
13:38 home and then charge em!
13:38 katsmeow-afk info is not presentable in court
13:38 furrywolf I would think a large hole in the back woods somewhere would be the best way to get rid of them.
13:38 home if the legal system does not work, well than you gotta take things in your own hands.
13:39 katsmeow-afk home, i'll leave that to you
13:39 home or you can ignore your problems :D
13:39 katsmeow-afk them shooting each otehr is not my problem
13:39 home 0_0
13:40 home A bunch of dudes are trying to kill each other on your property, and its none of your business?
13:40 home What?
13:40 katsmeow-afk ? how is it my problem for undesireables to remove each other from the gene pool?
13:40 katsmeow-afk umm, i didn't say they killed each other on my property
13:40 home in your neighbourhood ?
13:40 katsmeow-afk damnit, YOU must be a human, the way you construe things
13:41 katsmeow-afk bye, bbl
13:41 home 0_0
13:41 home to each his own.. I say!
20:00 rue_shop can anyone tell me what I said I'd do today
20:09 rue_shop !thislog
20:09 tobbor This one: http://rueshouse.dyndns.org:82/~ircjunk/irclogs/html/%23robotics-2012-05-30.html
20:10 rue_shop ue_mohr:maybe tommorow I'll play with a 7414 and 7474 to see if I can get a decodable output
20:10 rue_shop tho I'm currently fighting to stay awake
20:11 rue_shop http://talkingelectronics.com/ChipDataEbook-1d/html/images/4069-fig8.gif
20:13 rue_shop I cant concentrate enough to remember how to do quadraute -> up/down pulses
20:14 zhanx evening
20:15 rue_shop I cant concentrate enough to remember how to do quadraute -> up/down pulses
20:16 rue_shop I was thinking a D latch, but thats to direction and step
20:18 Tom_itx yes you can
20:19 Tom_itx http://tom-itx.dyndns.org:81/~webpage/avr/atmega328/PCINT0/quadrature/
20:19 rue_shop what does the quadrature to up and down pulse streams?
20:19 rue_shop not using an avr
20:21 Tom_itx http://en.wikipedia.org/wiki/Quadrature_amplitude_modulation
20:22 rue_shop http://www.humanoid.waseda.ac.jp/booklet/photo/WL-3-1969.jpg
20:22 rue_shop huh
20:22 rue_shop mid 60's
20:22 Tom_itx probably not what you're after
20:22 Tom_itx http://en.wikipedia.org/wiki/Quadrature_encoder#Single-track_Gray_encoding
20:23 Tom_itx that may be
20:23 Tom_itx or not
20:24 rue_shop ok tom let me define this better
20:24 rue_shop quadrature, 2 wires -> ttl circuit -> 2 wires, one pulses for forward motion, the other pulses for reverse motion
20:24 zhanx ugggh math
20:24 zhanx my brain is fried today
20:25 zhanx rue_shop: use a negative voltage for the reverse
20:25 zhanx :)
20:52 katsmeow-afk http://duckduckgo.com/?q=quadrature+flipflops
20:54 katsmeow-afk i got a 2" incoming gravity/suction pipe, a 3/4" outgoing high pressure dirtywater pipe, and a 1/2" conduit for lighting, thru the 10" of concrete wall, and sprayfoamed them to be watertight, since they are over 3ft underground
20:58 katsmeow-afk i hope the foam sets fast, i expect weatehr to fill the trenches with water tonite
20:59 zhanx yep its gonna be a storm tonight
21:00 rue_shop if I use a D flipflop with an edge triggered clear
21:02 katsmeow-afk no such thing, they all are level active, altho they act at the leading edge,,, the 7474 on leading low edge, the 4013 on leading high edge
21:02 katsmeow-afk that duckduck url has several schematics
21:12 rue_shop are any of them to convert quadrature to up and down pulses
21:13 katsmeow-afk http://profmason.com/?p=775
21:20 katsmeow-afk this happens in Alabama just about every time someone gets pissed at yappy dogs : http://www.abc3340.com/story/18649642/chilton-county-sheriff-looking-into-who-or-what-skinned-dog-alive
21:21 katsmeow-afk every few years
21:22 katsmeow-afk this is real common too, when you can get the legal stsyem to give a damn : http://www.abc3340.com/story/18649565/twenty-pit-bulls-removed-from-house-in-midst-of-fight
21:57 katsmeow-afk http://phys.org/news/2012-05-tool-wielding-robots-bodies-surgery.html
23:13 rue_mohr http://www.youtube.com/watch?v=ha-ra6kJCDs&feature=related
23:13 rue_mohr kat, check out how he mounted the audio jack
23:14 rue_mohr kat, if there is a maker faire around you sometime, I suggest you go to it.
23:30 katsmeow-afk cannot afford it
23:30 katsmeow-afk someone, many yrs ago, did a laser eavesdropper gadget
23:30 rrywolf curls back up on katsmeow-afk's lap, being even sorer after working all
23:31 tsmeow-afk pets with one paw while writing with the o
23:31 furrywolf :)
23:35 furrywolf so would I.
23:35 furrywolf grr, wrong window.
23:35 rue_mohr no I meant just how he mounted the audio jack, with the eyebolt
23:36 katsmeow-afk oh, yeas
23:37 furrywolf bleh, and my connection is sucking tonight.
23:38 katsmeow-afk you know how Tektronix, and some other companies, overload knobs to do several things, like layered knobs and push-pull on each knob?
23:38 katsmeow-afk i found a way/reason to temporally overload the knobs too
23:39 furrywolf is finding a way to do something a good reason to do it? :)
23:39 katsmeow-afk that is, i use mini-din connectors as knobs,, if a circuit is controlling the psu amps, i don't need the amp-knob, so i plug the circuit into the amp-knob
23:39 katsmeow-afk furry, yeas, i ran out of space in the psu front panel
23:40 furrywolf I'd keep the knob as a limit or gain control.
23:41 katsmeow-afk i ran out of space in the psu front panel
23:41 furrywolf my benchtop multimeter has the remote inputs on the back. :)
23:41 katsmeow-afk i *can* set the max, but the plug-in controls from zero to that max
23:42 katsmeow-afk i was going to make a fast lan around the bench based on ethernet jacks, but i'd never use it, i suspect, cept maybe for long term logging
23:43 katsmeow-afk put 2 two-wire single direction serial busses on it
23:44 furrywolf meh, connection approaching unable-to-do-anythng-at-all level... 40% packet loss now.
23:44 rrywolf curls up on kat's lap before the connection dies and makes curling up imposs
23:45 tsmeow-afk waves gnites to the fadding f
23:45 katsmeow-afk fading
23:45 katsmeow-afk [furrywolf PING reply]: 3 secs