#robotics Logs

Dec 10 2011

11:03 rue_house hey
11:04 r0b- if i use servos do they need to match for speed/torque?
11:04 Tom_itx dude you got mail yet?
11:04 b- thinks yes
11:04 rue_house r0b-, your doing line following?
11:04 r0b- maybe
11:04 Tom_itx they won't match even if they match
11:04 r0b- i havent decided
11:04 rue_house Tom_itx, patience its canada
11:05 r0b- what do you mean tom
11:05 rue_house r0b-, if you do a line follower, the direction of the robot is completely determined by the line, nothing about the mtoors matters
11:05 r0b- im talking about the speed of the servo
11:05 rue_house r0b-, if you do a line follower, the direction of the robot is completely determined by the line, nothing about the mtoors matters
11:06 r0b- :|
11:06 r0b- well
11:06 rue_house line followers are closed loop, they automatically balance the hardeware
11:06 r0b- oh ok
11:06 rue_house it closes cause of the line its following
11:06 Tom_itx rue_house
11:07 Tom_itx you need any robotic parts?
11:07 rue_house if you want to do free navigation with it, you will have all sorts of fun trying to get it to drive straight without feedback
11:07 Tom_itx i'm about to dump a bunch of stuff
11:07 rue_house Tom_itx, stuff?
11:07 r0b- :o
11:07 Tom_itx haven't made a pile yet
11:07 rue_house <rue_house> if you want to do free navigation with it, you will have all sorts of fun trying to get it to drive straight without feedback <--- applies to even "matched" motors
11:09 Tom_itx that's why i said
11:09 Tom_itx they won't match even if they match
11:11 rue_house I hope he dosn't insist on trying to find motors that do
11:11 rue_house I'd like to see soemone build something
11:12 Tom_itx i'm at a dead end
11:12 r0b- i hit my wall
11:12 b-
11:13 r0b- the walmart rc car sounds good now lol
11:19 rue_house well geared, aka slow things are controllable easily
11:20 rue_house that said, I was able to turn a toy excavator into a racing line follower
11:20 rue_house and the reason we keep saying modified rc servos' is so that you dont give up when you need to DRIVE the motors
11:22 Tom_itx :)
11:22 Tom_itx you can't drive one from a �C pin?
11:23 rue_house how long HAS r0b- been putting off buying those servos? am I mixing him up with somene else?
11:23 Tom_itx I doubt it
11:23 rue_house wait, is rob the one with no money?
11:23 r0b- yea flyback :P
11:23 rue_house whos the other one
11:23 b- have m
11:23 r0b- just stingy
11:24 rue_house r0b-, are you the one who already built the 4 wheeled robot?
11:24 r0b- no
11:25 rue_house oh
11:25 r0b- different guy
11:25 rue_house I'm just trying to work out who's who
11:25 r0b- im bill
11:26 r0b- your rue
11:26 r0b- hes tom
11:26 rue_house damn, it comes to natural to you dosn't it?
11:26 rue_house :)
11:26 rue_house what if you weren't you and I was tom?
11:26 r0b- what?
11:26 r0b- lol
11:27 Tom_itx omg
11:27 Tom_itx what a dilemma
11:27 r0b- well rue
11:27 r0b- 25$ for a servo is kinda pricey if you ask me
11:27 rue_house r0b-, you want a robotic platform to program, right?
11:27 Tom_itx so get one for $9
11:27 r0b- yea
11:27 rue_house r0b-, your right, its too pricey, servo's should eb $10
11:27 r0b- my LHs doesnt have cheaper
11:27 rue_house find somewhere else to buy them
11:28 rue_house www.greathobbies.com
11:28 r0b- ill go to towerhobbies
11:30 rue_house http://www.greathobbies.com/productinfo/?prod_id=HITHS311S
11:30 rue_house CANADIAN DOLLARS!
11:30 rue_house http://www.greathobbies.com/productinfo/?prod_id=HITHS322S
11:31 r0b- yes
11:31 r0b- :)
11:31 rue_house ok?
11:31 rue_house how much are the same model servo from tower hobbies?
11:32 r0b- http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXDEL5&P=ML
11:33 rue_house there, see?
11:36 r0b- it takes 1 week to ship so IDK
11:39 rue_house how many weeks have you been putting off buying something
11:39 rue_house you have a choice, next week your either where you are now, or you have two servos
11:41 Tom_itx rue_house
11:41 Tom_itx what are we gonna do today?
11:41 rue_house I'll check after robotics
11:41 rue_house today if more coding on the arm
11:42 rue_house were getting closer to having it save and recall positions
11:42 jeemy do you know a way to put gears on the shaft of a servo?
11:42 Tom_itx there are adapters
11:42 Tom_itx there are gears that fit servos
11:43 Tom_itx there are screws to mount one to a servo horn
11:43 Skwint most servos ship with bits that attach to them
11:43 Skwint and gears attach to the bits
11:45 Tom_itx http://www.pololu.com/catalog/category/23
11:45 Tom_itx servos
11:46 jeemy I have a standard hobbyist servo in my hands and can't figure how I would attach a gear like this http://shop.hpceurope.com/fr/produit.asp?prid=177&produit=Engrenage+droit&famille=Engrenages%20%C3%A0%20denture%20droite&catalogue=Roues%20dent%C3%A9es on the shaft
11:47 jeemy I could epoxy it on the shaft but that would be non reversible
11:48 Tom_itx epoxy probably wouldn't stick to the plastic that well
11:48 Tom_itx and i can't find the side i'm looking for
11:50 Tom_itx http://www.servocity.com/html/gears___sprockets.html
11:50 Tom_itx see what they have
11:50 r0b- what you mean?
11:50 Tom_itx http://www.servocity.com/html/gears___sprockets.html
11:50 jeemy there is this http://servocity.com/html/servo_mount_gears.html
11:50 jeemy yep
11:53 Tom_itx http://www.robotzone.com/index.html
11:54 Tom_itx same outfit
11:55 Tom_itx about 30 mi from me
11:55 jeemy mi?
11:55 Tom_itx miles
11:56 jeemy oh
11:56 r0b- km
11:56 jeemy you are lucky
11:56 Tom_itx never been there
11:56 Tom_itx probably never will
12:03 b- might break and buy them
12:03 r0b- i wanna do something today!
14:29 rue_house you havn't doen anything for weeks
14:29 rue_house but ok, lets make wheels for the motors you get next week
18:52 the_jester greets
18:54 rue_house I'm here for about half an hour
18:54 rue_house then off to company party
18:54 Tom_itx party hardy
18:56 zhanx rue parties?
18:58 rue_house it'll be a challange, I'm almost completely asleep
21:08 rue_house party is tommorow
21:09 rue_house oops
21:10 b- is hyper
21:10 r0b- rue_house: you ever shop servocity?
21:11 rue_house only great hobbies
21:11 r0b- canadian?
21:11 rue_house yes
21:12 rue_house canada rules
21:12 r0b- rue_nuck :)
21:12 r0b- you will never guess who told me to call you that
21:12 rue_house except the sellout assh*** polititians
21:12 rue_house he got banned for that
21:12 rue_house several times
21:12 r0b- who was it?
21:13 rue_house so you didn't buy any servos yet?
21:13 rue_house want to start making wheels?
21:13 r0b- how do i make wheels
21:13 rue_house there are several ways
21:13 r0b- well im looking at the power servos from servocity (obviously overkill)
21:13 rue_house the best is to get ahold of an HP printer
21:13 r0b- idk what i wanna do
21:14 r0b- either an ARM or a rover
21:14 r0b- robot arm or rover idk
21:14 r0b- or arm on a rover lo
21:14 r0b- lol
21:14 rue_house well, your not going to do anything, if you were you wouldn't have taken any advise from us, gone out and bought whatever you thought might owrk, and be putting it togethor
21:14 rue_house your odds of ever assembling anythng are really low, sorry.
21:15 r0b- i have to wait till i get more money for servos :P
21:15 rue_house robotics personality B, talks about building, talks about buying
21:15 r0b- i have like 30$
21:16 rue_house did you ever see all my robots?
21:17 rue_house r0b-, I'm just sayin, do-ers do, talk-ers talk. I'd love to see you build soemthing
21:17 Tom_itx party over already?
21:18 r0b- dude i would LOVe to build something
21:18 rue_house Tom_itx, no, I was early by 24 hours
21:18 rue_house r0b-, na, or you would be doing it
21:18 Tom_itx ahh
21:18 rue_house r0b-, can you get your hands on an HP printer?
21:18 r0b- not a broken one no
21:19 rue_house peopel dont throw away broken ones
21:19 rue_house people throw away printers cause their getting new printers
21:19 rue_house because the new model is out
21:19 rue_house just like iphones
21:19 rue_house and cellphones
21:19 rue_house and computers
21:19 r0b- i havent seen any around here
21:20 rue_house people dont get rid of them cause they dont work, they get rid of them cause they are gonna use the newer one
21:20 rue_house r0b-, where do people take printers to dispose of them
21:20 r0b- idk
21:20 rue_house guess
21:21 r0b- probably a recycling center
21:21 rue_house thats prolly the number one place
21:22 rue_house I'm sure about 60% of printers go there
21:22 rue_house where else?
21:22 rue_house r0b-, how many computers are in your house now?
21:22 r0b- 3
21:23 rue_house and what dd your house do with the old ones?
21:23 r0b- got rid of them
21:23 r0b- why?
21:23 rue_house ok, choose a frieds house in your mind, any one of them, how many computers they have?
21:24 r0b- none
21:24 r0b- or one
21:24 rue_house ok, did they have one before that?
21:24 r0b- but they are old lol
21:24 rue_house mhm
21:24 rue_house like 3 years old?
21:25 r0b- or older
21:25 r0b- what can i get out of a PC?
21:25 rue_house do they have a printer?
21:25 r0b- no
21:25 r0b- why do i need a printer
21:25 rue_house odds aren't with me today :)
21:26 rue_house r0b-, let me go back a bit
21:26 rue_house where did you get rid of your old computers?
21:26 r0b- sold them
21:26 rue_house hmm well done
21:26 r0b- long time ago
21:26 rue_house do you live in a town or city?
21:27 r0b- town
21:27 rue_house do you have a newspaper?
21:27 r0b- yea
21:27 r0b- tell me why i need a printer :)
21:27 m_itx thinks rue_house wastes alot of
21:27 rue_house how many garage sales are in your area for tommorow
21:27 r0b- dude therews snow on the ground
21:27 r0b- tom shut him up
21:28 rue_house Tom_itx, I'v playing odds, 30% of people stick their old computers and printers in their closet, basement, or attic
21:28 rue_house but I'm losing
21:28 r0b- move on
21:28 r0b- i do have an RC car
21:28 rue_house r0b-, the rollers in HP printers dont break
21:28 rue_house they work perfectly fine
21:29 r0b- i do have an RC car
21:29 rue_house especially if the printer works
21:29 r0b- :P
21:29 rue_house ok, do you want to hack it now?
21:29 r0b- no
21:29 r0b- :)
21:29 r0b- later
21:29 rue_house talkers talk.
21:29 r0b- f off :)
21:29 rue_house I'v only seen one do-er that talked
21:30 rue_house ever, it amazed me when he did the stuff he talked about
21:30 b- doesnt even have an idea in m
21:31 rue_house did you say you have an arduino?
21:31 r0b- yes
21:32 r0b- that much i do have lol
21:32 r0b- along with wire a motor controller some ungeared motors and solder gear
21:32 rue_house make a line following robot
21:33 rue_house ok, how many watts on the soldering iron?
21:33 r0b- with the rc car?
21:33 r0b- 25
21:34 rue_house would you like some 1/8" plastic sheet? about a square foot?
21:34 rue_house ridgid
21:35 rue_house to make a robot from
21:35 rue_house do you have any metal coathanger wire?
21:35 rue_house do you have a drill?
21:35 rue_house do you have a hacksaw?
21:36 rue_house rue
21:36 rue_house yes?
21:36 m_itx thinks rue_house wastes alot of
21:36 rue_house you go to too much work for this
21:36 rue_house how so?
21:36 rue_house your gonna engineer something he CAN but WONT build
21:36 rue_house you give up too easy
21:36 rue_house no, he's a talker, dont waste the time
21:37 rue_house we went over this before
21:37 rue_house ok then, give him the test
21:37 rue_house I dont think he will do the test
21:37 Tom_itx rue_house, where are you at with the heat plant now?
21:37 rue_house then dont bother helping him, just because your capable of building ANYthing with whatever you have on hand dosn't mean he's willing
21:38 rue_house ok, I'll give him the test
21:38 rue_house Tom_itx, were collecting firewood, I have to clean the tubes tommorow
21:38 Tom_itx doesn't cedar burn too fast?
21:38 rue_house we got a load from the landfill today after picking up the christmax tree
21:39 rue_house Tom_itx, yes, but its free!
21:39 Tom_itx fast = more tar doesn't it?
21:39 rue_house and its wet, so its not burning worth squat
21:39 rue_house its overdue for a cleanout
21:39 rue_house r0b-, do you have a webcam?
21:39 r0b- why
21:40 rue_house r0b-, go outside, find a small rock, draw eyes and a mouth on it, take a pic with the webcam and post it on the internet
21:40 Tom_itx cause he's gonna give you a test
21:40 r0b- theres snow on the ground lol
21:40 Tom_itx it's a test to see if you can follow directions
21:40 r0b- im not going digging
21:41 rue_house well I should have started with the test, saved myself a lot of engineering a robot he could build
21:41 Tom_itx you should have plenty of those stored up
21:42 anx goes off to search for 3d design software for li
21:42 rue_house zhanx, pls tell me what you find
21:42 rue_house +- moray
21:42 zhanx ok
21:42 zhanx need something
21:43 rue_house I was > < that close to making my own after my last search
21:43 rue_house zhanx, did you get my answer about -lm for gcc to get the math stuff?
21:50 rue_house there is an interesting disconnect between doing tasks on a computer and doing tasks irl
21:50 rue_house alot of people will not subscribe to assembling hardware, but will do computer programming
21:51 rue_house its something I dont understand yet
22:13 r0b- eh
22:34 rue_house drat, I have to sleep
22:34 theBear it's ok rue, i'm awake, we'll take turns
22:34 Tom_itx heh
22:41 rue_bed mmm
22:44 thylon [22:42] <rue_house> alot of people will not subscribe to assembling hardware, but will do computer programming
22:44 thylon I was like this for a long time
23:01 r0b- hows your life tom?
23:06 rue_bed the_jester, sorry, I'v got to sleep
23:09 duckinator rue sleeps?
23:29 r0b- yea lol