#robotics Logs

Aug 19 2014

00:28 rue_house I have to make two videos for HAD
00:30 GargantuaSauce two?
00:35 rue_shop2 one not more than 2 mins and one atleast 2 mins
01:27 GargantuaSauce think this is the first monologue video of yours ive seen without you employing the use of a very silly voice
01:31 rue_house I'm soryr, I was in a hurry
01:32 rue_house honestly, I didn't even review them
01:32 GargantuaSauce you didnt show off the pc software!
01:32 GargantuaSauce for shame
01:32 rue_house if there's anything I shouldn't have posted, please point it out so I can kill everone who's seen the video
01:32 rue_house I only had one damned hand
01:32 GargantuaSauce and the two videos are almost identical lol
01:33 rue_house one was holding the camera, lame excuse I know
01:33 rue_house http://ruemohr.org/~ircjunk/robots/arm7/hobbydriver/
01:33 GargantuaSauce ya it's pretty obviously rushed, you should probably do a better one if you're doing a serious entry
01:33 rue_house http://ruemohr.org/~ircjunk/robots/arm7/pc_software/
01:33 rue_house software
01:33 GargantuaSauce ya i know the links, i'm just saiyan
01:33 GargantuaSauce AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
01:33 GargantuaSauce put it in the video
01:34 rue_house since there is no requirement to actually build it, I was thinking that my 12' mecca would have been a better entry
01:34 rue_house but I could talk about that for half an hour
01:34 rue_house min
01:34 GargantuaSauce i will happily pray in the direction of your mecca
01:35 rue_bed but then everyone would be building 12' meccas, and that wouldn't be a world I'd want to live in
01:35 rue_bed honestly, after mocking up a 12' mecca, they REALLY aren't that big
01:35 rue_bed I mean, yea, its crotch clears my head, but its really not that big
01:36 rue_bed the robot is, an entry, cause, if you dont enter, you cant win
01:36 rue_bed and just once, I'd like to acually submit to one of these silly compeitions
01:37 rue_bed my submission reflects my beliefs, that the project should be real and have significant progress at existing in the real world
01:37 rue_bed I dispise people who just talk about building things
01:38 rue_bed seen waaaaay too much of it
01:38 rue_bed as for the mecca
01:38 rue_bed I got the casting stuff all set back up again
01:39 rue_bed I'm hoping this week to do a test melt, and maybe cast another one of the rollers in the greensand I made
01:40 rue_bed GargantuaSauce, ?
01:40 GargantuaSauce wut
01:41 rue_bed right?
01:42 rue_bed hows your projects?
01:42 GargantuaSauce subject to your derision :(
01:42 GargantuaSauce i am doing a software startup and it has eaten me
01:43 rue_bed why?
01:43 GargantuaSauce cause it's one of those projects that is fully capable of taking everything i have
01:44 GargantuaSauce and in the interest of its success, such is what i give
01:44 rue_bed then Its not 90% made of things you done before?
01:44 GargantuaSauce more like 20%
01:44 rue_bed ouch
01:45 GargantuaSauce also 40% things that HAVEN'T been done before
01:45 GargantuaSauce afaik
01:45 rue_bed failure is the mother of education you know, its important to gather as much free failure opportunity as yo can
01:46 GargantuaSauce ya
01:46 GargantuaSauce still holding out hope that this will succeed
01:46 GargantuaSauce pitching to investors at the end of the month
01:46 GargantuaSauce then in theory we'll be starting a firm i guess, and i'll just be doing some further r&d instead of the groundbreaking r&d AND prototype development
01:50 GargantuaSauce and hopefully that will spare me the mental effort to do this stuff which is what i really want to do!
01:51 GargantuaSauce well
01:51 GargantuaSauce one of the things i really want to do.
02:40 Lycerion hello, anybody want to recommend a good kit/ place to start for a noob?
02:42 Lycerion I have decent coding experience and have done some stuff before, looking to get a little deeper into things
02:43 GargantuaSauce comfortable with c?
02:44 Lycerion c++ and java mostly
02:44 Lycerion & python
02:47 GargantuaSauce what are you looking to build
02:48 Lycerion nothing specific really; something I can play with to learn
02:51 GargantuaSauce well an avr would be good for messing around with on a breadboard
02:51 GargantuaSauce that's an 8 bit micro running at up to 16MHz
02:51 GargantuaSauce you could also get an arduino but if you do that, avoid all arduino-related software
02:52 GargantuaSauce if you want more computational grunt i recommend the stm32f4discovery board
02:52 GargantuaSauce built in programmer/debugger, much more modern architecture
02:52 Lycerion mm will look into that one
02:52 GargantuaSauce in either case, step 1 is to get an LED blinking and you can go from there
02:53 Lycerion sounds like a good plan
09:08 rue_house GargantuaSauce, might want to point out that avr is the micro used in arduinos, he can get an arduino and go from there
09:13 deshipu the ones that have isp connectors can even be programmed directly
09:20 Tom_itx check: windshield crack fixed
09:23 deshipu SG90 or TG9e?
09:23 rue_house sg90 is a 9g servo thats only $2.50 on ebay
09:24 deshipu well, TG9e is a 9g servo that's only $2.49 on hobbyking
09:24 rue_house yea, hobbyking, and their $17 shipping and their $17 duty fees
09:25 rue_house opposed to free shipping on ebay
09:25 rue_house with no duty
09:25 deshipu $11 shipping and no duty
09:25 deshipu eu warehaouse
09:25 rue_house wait till it gets there
09:25 deshipu it got here already, several times
09:26 rue_house ah, if your in eu then maybe not, canada/us would be different story
09:26 deshipu as long as the whole package is under $100
09:31 fluffywolf since I've pretty much given up on finding a timing pulley with the right bore, how hard is it to bore one out larger? I currently lack lathe tooling, but that's the only way I can think of to enlarge the hole with the precision needed...
09:32 fluffywolf I don't even know if I'll be able to get it in the chuck, depending on how the jaws line up with the teeth...
09:33 rue_house what bore?
09:33 rue_house prolly easier to get a collar to downsize it
09:33 fluffywolf I need 12mm with a set screw, but it seems the vast, vast majority of sprockets are sold with a "pilot bore" with the expectation you'll drill them to size, usually 6 or 8mm.
09:34 rue_house 12mm!
09:35 rue_house how big is the thing your making?
09:35 fluffywolf I need either a HTD 5M (5mm pitch) 40 tooth 15mm width 12mm bore with set screw, or a XL (0.2in pitch) 21 tooth with 14mm keyed bore... neither seems obtainable.
09:35 rue_house what are you making?
09:36 fluffywolf I'm CNCing a chinese mill-lathe combo. it has 12mm ends on the leadscrews. I have the original XL pulleys, but the steppers I got have 14mm shafts with HTD pulleys on them.
09:37 rue_house hah, you took it apart and now you cant use it to make itself?
09:37 fluffywolf I can't find any XL pulleys with 14mm keyed bores, and I lack any way to cut a key.
09:37 fluffywolf so I'm thinking of replacing the stock XL pulleys with HTD pulleys... which means finding ones with 12mm bores and set screws.
09:37 rue_house there are youtube videos on how to make keyway cutters from carbisde square stock
09:37 fluffywolf nah, it's still together. I just don't have any tooling yet. heh.
09:38 fluffywolf http://fw.bushytails.net/shoptask02.jpg looks like that. the pile of random crap on it changes randomly, and seems to accumulate...
09:41 fluffywolf it was CNC-able from the factory, and I have most of the original parts... just the original pulleys are for 3/8" shaft steppers, while everything currently available has a 14mm shaft.
09:42 fluffywolf and I don't want to ruin the shaft on the $$$ steppers I got. heh.
09:42 fluffywolf and HTD is better anyway....
09:43 rue_house I'm off to work!
09:44 fluffywolf I need to do that too in about five minutes.
10:48 GuShH robotustra: argentina...
10:48 GuShH fluffywolf: are you the wolfie I know or another wolfie?
10:48 GuShH wolfie I know lives in the woods
10:49 GuShH kat seemed to disagree with someone's view and quit, not sure when.
10:49 MrCurious GuShH: you just waking from a coma?
10:50 MrCurious i think kat operates on a 6 month in/out period
11:26 GuShH MrCurious: no, fluffywolf asked
12:11 theBear way ahead of me :)
12:11 madist :)
12:11 theBear see, in here he's got a login for just about everywhere he ever could be
12:11 theBear bed, house, work, saunaroom
13:28 robotustra cats, dogs, bears
13:28 robotustra zoo
13:31 robotustra ah, wolfs
13:46 Skwint wolves :p
13:51 robotustra you too?
17:25 Raccoon How much effort should it take to fit a bike with a servo that locks up the brake cable by remote?
17:25 Raccoon *bicycle
17:25 GargantuaSauce ehh that requires quite a bit of force
17:26 Raccoon so it would require some lever system?
17:26 GargantuaSauce well something along those lines would sacrifice travel for force and they require quite a bit of that also
17:27 GargantuaSauce something like a highly geared stepper and a winch might work better
17:27 Raccoon that's sounding quickly complicated :)
17:27 GargantuaSauce yeah.
17:28 Raccoon wonder if there's an auto part or something readily on the market
17:32 Raccoon Hmm, maybe an actuator that protrudes through the bike spokes
18:12 fluffywolf Raccoon: using a small 12V gearmotor and a screw might work quite well... screws give you a whole lot of force multiplication. mount a piece of threaded rod on the motor shaft, then a nut on a bracket that keeps it from rotating, with the cable attached.
18:13 fluffywolf Raccoon: there's also pneumatics and hydraulics... if this is for occasional use only, and only needs to apply full wheel-locking force, a disposable co2 cartridge, a solenoid valve, and a little ram will apply enough force to snap the cable if you size it wrong...
18:13 fluffywolf if you want to use servo-derrived parts, a windlass servo and a bit of allthread...
18:15 Raccoon allthread?
18:15 fluffywolf some car door lock actuators put out a good amount of force, but I suspect their duty cycle is inadquate. a cable window regulator motor would work, but might be bulky - I don't know how small you're trying to make this.
18:15 fluffywolf threaded rod
18:16 Raccoon Really just entertaining the idea and its complexity
18:16 fluffywolf what is the project?
18:16 Raccoon Not really a project tbh
18:17 Raccoon But it would be nice to watch my bike get stolen and flip the rider off into heavy traffic so his face gets run over :)
18:17 Raccoon maybe i'll buy a bunch of bait bikes and do this
18:17 fluffywolf lol
18:18 fluffywolf just put a couple screws through a plastic seat and a taser under it.
18:18 fluffywolf one with enough voltage to get through pants.
18:18 Raccoon i actually thought about that!
18:18 Raccoon Though whatever it is, it'd have to look like honest mechanical failure
18:18 fluffywolf or, for maximum effect, between the seat and the handlebar grips...
18:18 Raccoon so I'm thinking a mechanically timed failure of spokes popping out or something of the sort
18:19 fluffywolf how about a gps tracker and a couple buddies with hockey sticks?
18:19 Raccoon heheh
18:19 fluffywolf the old-fashioned solution. :P
18:20 Raccoon yes, i can't wait until we get to the 1x1 inch consumer GSM GPS tracker
18:20 Raccoon Problem is this bullshit that every device needs a $50/month subscription fee for cellular
18:21 fluffywolf in order to flip someone off, you'll have to lock the front wheel... which rules out "faulty" coaster brakes and such.
18:22 Raccoon i was thinking an actuator that remotely protrudes between the front spokes behind the fork
18:23 fluffywolf you could mount a rear coaster brake hub for the front wheel, with no sprocket, and see if you can fit the actuator internally.
18:23 Raccoon or mechanically time wheel failure somehow
18:23 fluffywolf you could even use some time of gear reduction inside the hub, so it slowly screws the brakes on after a distance.
18:24 fluffywolf s/time/type
18:25 fluffywolf or a snap action of some form to make the delay slow, but the application not.
18:25 Raccoon aye
18:25 Raccoon ideally the action should be tied with heavy pedaling or speeds exceeding 20mph
18:26 fluffywolf since this only needs to work once, rather than a complex actuator, all you need is a strong spring and a catch of some form.
18:27 Raccoon then again, i kind of like the idea of an explosive bolt beneath the seat that causes great rectal pain and possibly death
18:27 Raccoon remote electrical detonation is also cheap
18:28 fluffywolf you could probably build the entire device inside the headset, making it very hard for someone to notice... run the brake cable down through the headset, but hidden in the headset is your actuator...
18:29 fluffywolf you'll need a strong spring and some way of releasing it...
18:29 Raccoon headset?
18:29 fluffywolf http://en.wikipedia.org/wiki/Headset_%28bicycle_part%29
18:30 fluffywolf the bits where the fork runs through the frame and connects to the handlebars
18:30 fluffywolf i.e. an easily accessible hollow tube with enough room for a strong spring and a release device. :)
18:31 Raccoon hmm hmm hmm
18:32 peeps[work] have a little mechanism that releases gallium onto Aluminum alloy wheels when you start it https://www.youtube.com/watch?v=FaMWxLCGY0U
18:32 Raccoon lol
18:32 Raccoon or mercury
18:32 fluffywolf I still think a taser and/or hockey sticks is the best option.
18:33 fluffywolf have a video camera filming where you leave the bike, track the theif, activate taser at well-choosen moment, place under citizens arrest, beat if resisting, dump off at police station with video tape...
18:36 rue_house ahhh I'm back!
18:38 Raccoon if only one could still buy TNT or other explosives effective at killing or maiming one's rectum
18:40 Raccoon Would only have to replace the seat after each bait
18:40 fluffywolf unfortunately, the police tend to look rather unfondly at maiming people for petty theft... this was worked out in the 1800s when spring guns were popular.
18:42 fluffywolf if you want to kill them, a remote control shotgun is quite effective.
18:44 fluffywolf or just hide in the bushes with said shotgun. much cheaper and easier than a remote controlled seat explosive.
18:46 Raccoon hmm, true, but you can't guarantee they'll ride past you, or that you won't hit someone else in crossfire
18:46 Raccoon though a seat loaded with buckshot might be pleasant
18:46 fluffywolf I'd suggest sticking to non-lethal methods.
18:46 Raccoon coat the bike in poison ivy sap
18:47 fluffywolf if you can videotape the theft then non-lethally disable the thief, you can get criminal charges filed against them as well, and let prison take care of the anal trauma you seem so interested in inflecting...
18:47 Raccoon the bike would have to be valued at over $500 for criminal charges
18:47 Raccoon maybe more today
18:48 Raccoon hehe anal trauma
18:48 Raccoon you suggested the electrode screws :P
18:48 fluffywolf stealing a candy bar is enough for criminal charges. the dollar value just changes what you're charged with.
18:48 GargantuaSauce why not just stick a pin in the spokes of the wheel?
18:49 Raccoon GargantuaSauce, aye, trick is getting it to deploy remotely or with right mechanical timing
18:49 GargantuaSauce easier than using the actual brakes though i think
18:50 Raccoon I do have heavy springs that could fit the shaft of a bike frame, and could grip a brake cable
18:50 Raccoon get the spring to snap and take the cable with it
18:51 Raccoon i wonder if a seat shaft matches any common shotgun gauge
18:53 Raccoon just repack the shotgun shell with glitter for a less than leathal approach
18:53 fluffywolf again, if you do seriously injure the thief, you _will_ go to jail. US law does not consider it acceptable to seriously harm or kill someone to protect property, and hasn't since the 1800s.
18:53 Raccoon well, unless they're in your home, then it's fair game
18:54 Raccoon it's not unheard of to decorate your kitchen walls with someone's face and get a hearty handshake for a job well done
18:54 fluffywolf yes, that's protecting _you_, not your property...
18:55 fluffywolf and even that varries by state. here in defective-government land (california), you're not allowed to defend your house, instead being required to run away.
18:55 Raccoon it's a hybrid depending where you live. fewer and fewer states require a home owner to first attempt fleaing their property
18:55 Raccoon so it comes to protecting property
18:56 Raccoon which is silly since california has so much crime of that sort
18:57 Raccoon without the fear of death, home invasions become adventageous
18:57 rue_house Raccoon, what you building again?
18:57 Raccoon a bait bicycle
18:57 rue_house ah
18:58 rue_house fluffywolf, what you building?
18:58 rue_house GargantuaSauce, hows the cnc drive?
18:58 Raccoon a non-leathal bait bicycle :)
18:58 GargantuaSauce what cnc drive
18:58 rue_house wouldn't a bait bike be easy to tell?
18:58 Raccoon depends
18:58 rue_house GargantuaSauce, not you? damn...
18:59 fluffywolf rue_house: with the timing pulleys?
18:59 Raccoon there are all sorts of hidey spots on a bike
18:59 rue_house yea
18:59 GargantuaSauce i have a couple ruminations in that vein, not sure what i've mentioned in here though lol
18:59 rue_house fluffywolf, that you?
19:00 fluffywolf I'm CNCing a chinese mill-lathe machine.
19:02 rue_house yea, any ideas?
19:02 rue_house Raccoon, motorbike or pedal bike?
19:03 Raccoon pedal
19:03 Raccoon they're slightly more disposable
19:04 Raccoon honestly just wish it possible to erase people, even kids, who feel it acceptable to steal things. bicycles are amung the most common items.
19:04 rue_house ok whats it going to do to stop people from stealing it?
19:04 Raccoon and it's not even considered "grand theft auto" in the eyes of the law
19:04 Raccoon oh, nothing to stop them from stealing it. just thoughts about stopping them from stealing again.
19:05 rue_house ok,so...
19:05 Raccoon wheelchairs and the like
19:05 rue_house tracking device?
19:05 Raccoon like engaging the front brake or disabling the front wheel while they're taking off at 20mph
19:05 Raccoon in heavy traffic
19:05 rue_house could a person not just pick it up and carry it off?
19:05 fluffywolf I've often thought about leaving expensive-looking devices (ipods, etc) on car dashboards, that have been gutted and fitted with trackers instead, and arresting everyone who grabs them...
19:05 Raccoon people don't do that.
19:06 rue_house k
19:06 rue_house a time based player that shouts out "hey, I stole this bicycle!"
19:06 rue_house repeatedly
19:06 Raccoon a shotgun shell in the seat shaft
19:07 Raccoon say that 3 times
19:07 rue_house when was your bike stolen?
19:07 Raccoon I've had 3 stolen already
19:07 rue_house locked?
19:08 Raccoon twice locked. once i was standing next to
19:08 rue_house uh
19:08 rue_house they managed to steal it while you were standing next to it?
19:08 Raccoon yep
19:08 Raccoon big dude
19:08 rue_house wow
19:08 rue_house spare seat with a knife under it?
19:09 Raccoon right
19:09 Raccoon actually think this shotgun shell might pan out
19:09 rue_house you know they are gonna land hard on it too
19:09 fluffywolf yet another argument for carrying a firearm.
19:10 Raccoon fluffywolf: like you said, shooting someone who steals property isn't looked favorably upon
19:10 Raccoon certainly i should have shot him in the back if i was carrying
19:10 Raccoon *could
19:10 rue_house it must be possable to position a small knife blade just under the cover of a seat such that it sticks thru when sat on
19:10 fluffywolf yes, but if you're THERE, then you say he threatened you.
19:10 rue_house that will impede walking too
19:11 fluffywolf I said carry the firearm, not rig as a booby trap. heh.
19:11 Raccoon I'd have to kill him before he gets on my bike
19:12 rue_house I mean it tho
19:12 Raccoon GPS tracker would be handy too
19:12 rue_house 1/2" knife blade
19:12 Raccoon find the bike, then surprise him with moltovs at 3am
19:12 rue_house xacto
19:12 rue_house the pointed one
19:12 rue_house get a squishy seat
19:13 Raccoon rue_house: probably need a large spring loaded blade
19:13 rue_house no
19:13 Raccoon like a fish fillet knife
19:13 rue_house squishy seat with a knife ridgidly mounted under it, sitting with the tiop just under the cover
19:14 rue_house exacto blade
19:14 Raccoon you know how much squishy seats cost :P
19:14 Raccoon he might scratch his ass a bit
19:14 Raccoon need a 7 inch blade to surprise him
19:14 rue_house http://content.etilize.com/900/1010041312.jpg
19:15 Raccoon yeah, that's pretty weak
19:15 rue_house it;ll do enough
19:15 Raccoon a couple spider bite wounds maybe
19:15 Raccoon electrify the blades perhaps
19:16 Raccoon fill a tube with capacitors
19:16 rue_house heh, your still too pissed off to be listeningn to the likes of me
19:16 Raccoon weld his sphincter shut
19:17 Raccoon naw, i'm just pissed off in general :)
19:17 fluffywolf you also seem to have an obsession with anal injuries.
19:17 Raccoon lol
19:17 rue_house seems to me that peole DO grap both handlebars when getting on a bike
19:17 rue_house + -
19:17 Raccoon what else do people sit on :p
19:17 Raccoon true
19:17 rue_house 160VDC from a camera flash circuit
19:17 fluffywolf except he might be holding the bolt cutters in one hand, etc.
19:18 rue_house will stun them pretty damn good
19:18 Raccoon run a series of caps through the handlebars
19:18 rue_house get the rubber handlegrips with the ridges, wrap it up in copper wire
19:18 rue_house all you need is one AA cell
19:18 Raccoon trouble is you might accidentally get some kids that are just playing and admiring
19:19 Raccoon or someone who picks up your bike after it falls
19:19 rue_house dos't sound like it from what your saying
19:19 rue_house if someone is grabbing your handlebars, they are prolly making off with the bike
19:19 Raccoon I've picked up several people's fallen bikes before
19:19 Raccoon usually by the handlebars
19:19 rue_house if you picking up a bike that was locked, your steeling it
19:20 Raccoon no, just propping it back up against the pole or rack
19:20 rue_house lock it up
19:20 Raccoon they fall even when locked :p
19:20 Raccoon bikes hate gravity
19:20 rue_house dont leave fingerprints on the bike, see if the person stealing it dies, dont claim the bike
19:21 Raccoon naturally :D
19:21 rue_house there would be a big news story on it
19:21 rue_house might curb thefts if there is someone going around putting fatal shock systems on bait bikes
19:21 Raccoon do it on a science/tech campus
19:22 Raccoon you'd hope
19:22 Raccoon there was a time stealing a car was the highest crime short of murder
19:23 Raccoon people served real sentences for vehicle theft. just not bicycles
19:25 fluffywolf I still think an approach that results in the police getting them is much better than attempting to kill or maim them... sadly, if you do maim them, you'll go to jail, while they won't.
19:27 fluffywolf I personally think you give up any right to life as soon as you decide to live as a parasite, but the courts disagree.
19:28 Raccoon aye
19:28 Raccoon Even if we'd just chop off their arms or something.
19:29 Raccoon the pro-lifers win, and they serve a walking reminder
19:29 fluffywolf if you film them, catch them, then put them under citizen's arrest, you can let the prison system deal with the anal injurues.
19:29 Raccoon plus cholos without arms don't reproduce
19:30 Raccoon naw, he'll be some nephew's cousin of some official
19:30 Raccoon border state
19:31 fluffywolf being deported works too.
19:31 Raccoon nobody gets deported, lol
19:32 Raccoon first and second generation families are safe, even though first and second generation americans in politicians are amung the most corrupt
19:33 uffywolf thinks most politicians are corrupt regardless of genera
19:33 Raccoon there should be a law that a politician can't serve a community where more than 5% of the population are related to them.
19:34 Raccoon or even 1%
19:44 fluffywolf bbl, work
21:54 anonnumberanon Raccoon, yeah and politicians won't pass that law.
22:00 rue_shop2 one of the chaps from work stopped by, we tested the aluminum casting stuff, everything worekd great
22:00 GargantuaSauce oh youre casting aluminium now?
22:00 GargantuaSauce awesome
22:00 rue_shop2 the casting sand I made hardens up alot where its superheated
22:01 rue_shop2 we made a handle and he took it home
22:01 rue_shop2 ran it thru the lathe a bit
22:02 Tom_itx nice
22:03 Tom_itx been waiting to see a finished part come from that
22:04 rue_shop2 hah, he just took it home
22:05 rue_shop2 it was more a test of the casting sand and the new cope/drag
22:05 Tom_itx you know better not to take pics!
22:05 rue_shop2 I have to change the way I did the alignment gear on the cope and drag
22:06 rue_shop2 the good stuff all goes down too fast to be taking pics :)
22:07 rue_shop2 I think I'm gonna eat and sleep
22:11 GargantuaSauce get a mobius and put it on a hat or something
22:17 rue_house a what?
22:25 GargantuaSauce cheap actioncam
22:28 rue_house ah
22:30 rue_house oops, almost fell asleep