#robotics Logs

Nov 24 2015

01:00 maiden morning
07:53 anonnumberanon morning
08:32 akem hey
08:37 akem i was wondering if some of the people over there are working day job or partial time in the robotic sector/industry because i feel like its either experimental/hobby or student, school, lots of students on freenode also..anyway i mean like there will not be much companies maybe especially in europe, boston robotics, sort of rare, maybe more in asia/japan
08:38 akem maybe jobs directly related, printers dev etc but hardly accessible
08:40 deshipu I think that few people who work with robots at factories and such would have the motivation to come here in their spare time
08:42 akem deshipu, yea, or they could idle there sometimes.
08:45 deshipu go tell them ;)
08:46 Snert a complete tear down of a factory robotic arm would be interesting.
08:46 Snert or even just a high quality arm.
08:46 Snert not hobby servo based.
08:47 deshipu no serviceable parts inside
08:47 Snert sure there are.
08:47 Snert and to see just what kinds of mechanical techniques are used.
08:48 Snert in what areas do they use sun/planetary gear arrangments.
08:48 Snert what areas are usually hydraulic, for instance.
08:50 akem interesting stuff automatisms etc on a factory assembly line
08:51 akem the tech guys may not hang around here i agree
08:52 Snert I'd love to see a simple task done absolutely as fast as the arm can.
08:53 deshipu lots of that on yt
08:53 deshipu look for 'kuka' for instance
09:11 Snert interesting stuff and fun.
09:11 Snert what I would wanna see is prolly within the realm of trade and design secrets, naturally.
09:12 Snert like when they bring an aircraft carrier to town and do tours
09:12 Snert I don't wanna see the bridge and mess hall.
09:12 maiden damn, its to fun to play around with physics :D
09:13 Snert I wanna see the nuclear power plant and the missile control systems.
09:19 maiden ^_^
09:19 maiden have added viewpoint handling and joint control to my simulator now ;)
09:21 rue_mohr maiden, do we get a screenshot?
09:25 maiden not much to see: http://pasteboard.co/2nu9ag1Y.png
09:26 maiden when i have progressed a bit more so we have cleaner code, better control etc. etc i will put it on github or dito.
09:26 veverak akem: also, I suppose lot of that stuff still counts as "company secret"
09:26 veverak => they can't talk about it
09:28 maiden right now i am controlling the joints through the keyboard :p its fun to play around with but not so useful.. need to make a API and make the code a bit more object oriented not just thrown together ^_^
09:29 rue_mohr I have some code that does IK based on the mouse position
09:30 rue_mohr are the black arcs the servo range?
09:30 veverak inverse kinematics ?
09:30 rue_mohr yea, I need to write a page for FK and IK so that people will stop making it so hard
09:30 veverak well
09:31 verak made 6 dof for walking r
09:31 veverak wasn't so hard if somebody made basic DOC about the topic (thanks deshipu)
09:32 rue_mohr changed topic of #robotics to: Arduino controlled, 3d printed psycho robots! | http://tom-itx.no-ip.biz:81/~webpage/index.php | project updates at 2am GMT! | D is for Droid
09:33 rue_mohr I ordered 20 7x9cm pieces of veroboard from china
09:34 rue_mohr they sent them in peices that weren't split (2 per card) and sent 20 cards
09:34 rue_mohr so I got 40 boards
09:34 veverak lol
09:34 veverak :)
09:36 maiden i will build a simple "generic robot object" that are basicly a set of shapes, where the shapes can have a list of joints, each joints. Then i can have a parameter based "base humanoid" that i can hook up to different walk/gait schedules
09:37 rue_mohr http://ruemohr.org/~ircjunk/programming/c/SDL/2d/
09:37 maiden so the simulator will have few features, but have a simple generic robot format so other types of robots can be supported as well.
09:38 maiden rue_mohr, have used SDL a lot.
09:38 rue_mohr er, I shoudl note there is a correction to that library
09:38 maiden but went over to pygame (sdl for python) because prototyping was so much faster!
09:38 rue_mohr there was an error discovered this fall that corrects the angles
09:39 maiden now i am sold on Panda3D with Bullet physics, dead simple and very short code.
09:40 rue_mohr I needed to test the library before installing it on the bot
09:40 maiden might switch over to ODE later on
09:40 rue_mohr same code goes on my bot
09:40 maiden ah, i see ;)
09:40 maiden then C is the way to go ;)
09:43 maiden my robotplatform will run linux, so python is fine for me ;)
09:43 maiden but low-level control will be done in C in the nodes controlling different parts of the robot
09:43 maiden bbl
09:55 robotustra day
09:55 anonnumberanon okay back to work
10:06 anonnumberanon rue_mohr, setting the baud rate to 115200 sends 17 characters in 1 ms. This fits well within my 20 ms servo refresh loop. Implementing a diy method for much faster serial is not necessary yet compared to sequencing the robot movements. I am working on that right now. Will first make the robot stand then kneel then stand then kneel and make sure the sequence is fluid, then evalute whether or not this "by hand" method is suitable
10:06 anonnumberanon or if a full switch to modeling the movement is required. I have a lot of work to do today.
10:07 anonnumberanon Namely, starting with the robot's wireless controller.
10:41 akem http://m.youtube.com/?#/watch?v=HuC6q9kbryw
10:42 delinquentme Hi all, I'm looking to purchase a completed cable which has these: http://www.digikey.com/product-search/en?keywords=A31109-ND ... as the ends. Does anyone know how I should modify my search to find this?
10:45 anonnumberanon akem your link is bad
10:45 anonnumberanon https://www.youtube.com/watch?v=HuC6q9kbryw
10:46 anonnumberanon this is the correct one
10:48 akem i don t know
10:51 anonnumberanon I'm telling you.
12:37 SpeedEvil https://www.facebook.com/lifehacker.ru/videos/10154384331324972 - on flexibility. (sorta-sfw)
12:56 robotustra not bad
16:35 akem since we got 3d printed robot, i was thinking about face mask, printing mold for rubber masks, and 3d desktop printers are limited in size like 15×15
16:37 akem but printing separated parts that will clips together, then 1 layer inside the mold to get rid of the seams, where the clipsed parts touch themselves
16:38 akem liquid something not sure what for the layer inside, then drop in rubber inside once dried
16:41 akem maybe fesable also to hack/mod a 3d printer and driver to print 150×150 instead
16:42 akem sounds better
16:44 akem still one layer of liquid something onto the surface before using it would make things smoother, resolution of 3d printer
16:46 akem i guess i ll try to get myself that geeetech printer someday or another
16:48 Tom_itx or acetone on the plastic to smooth it
16:49 akem yea possible, gotta see how well it does
16:50 akem now they did tattoo machines out of 3d printers
16:52 akem http://www.3ders.org/images2015/interview-appropriate-audiences-hacked-3d-printer-into-tattoo-machine.jpg
16:54 Snert_ intresting. I'd want safety stops.
16:54 Snert_ before I tatooed anything but a mannequin arm
17:00 anonnumberanon >must eat
17:00 anonnumberanon "wait, let me just engineer this real fast and then ill order"
17:06 akem if you had correct setup long enough bars to slide and attaches you could set a large 3D printer platform on any table
17:09 anonnumberanon wacha workin on akem ?
17:11 robotustra evening
17:13 akem anonnumberanon nothing atm waiting to get some functionnal hardware maybe, but i got ideas...
17:13 akem hello robotustra
17:14 robotustra hi
17:14 robotustra https://www.youtube.com/watch?v=xAQX8W3D6Mg
17:14 robotustra playing that model https://www.youtube.com/watch?v=ye4PIjig9XA
17:22 anonnumberanon akem, well what do you WANT to build? what kind of robot?
17:27 akem anonnumberanon a sex robot, but spider robots are so cool also, hand fingers, animated rubber face, if i can do one simple sentrygun robot it will be fine
17:28 anonnumberanon akem, yeah you should start with deshipu's robot it is really cheap to make, and simple. do you have any supplies and or tools?
17:28 akem sentry gun is just 3 or 4 motors axis,trigger,reload, very fesable and entertainning
17:31 akem little, arduino, i'll get to see where its going, deshipu is using raspberry or other ICs that i don't know
17:32 akem will get more stuff later possibly, what about you, specific projects?
17:32 anonnumberanon nah deshipu's uses Arduino mini
17:35 akem anonnumberanon ok maybe something else also, what about you?
17:39 anonnumberanon making a little man robot
17:47 Snert_ Your robot idea reminds me of the stuff archimedes used to do.
17:47 Snert_ he didn't have transistirsand stuff
17:49 Snert_ but he was able to do a walking lion iirc.
17:52 akem anonnumberanon, humanoid ok, what do you use?
17:57 akem deshipu quadrupeds looks good, did not look into details i saw the board was smaller i though it was smthg different espxxx whatever
17:58 anonnumberanon whatever is strong and cheap akem
17:58 akem hehe nice one
18:02 anonnumberanon 8 bit AVR microcontrollers and MG995 servos, akem, and the cheap Sainsmart robot brackets for the body
18:02 anonnumberanon there, i gave away everything
18:12 anonnumberanon Snert_, lol why?
18:12 Snert_ the half human sitting on a rectangle undercarriage!
18:13 Snert_ it's what Archimedes would have done if he coulda.
18:13 Snert_ but all he could really do was measure wine into glasses when you donated to the temple.
18:13 Snert_ I think he did the 1st vending machine.
18:15 Loshki I heard he did it to sell Coca Cola and Marlboro's, when he wasn't bathing or screwing.
18:15 Snert_ those romans.
18:17 akem lol :》
18:17 akem archimedes was so good at jokes :>
18:18 Loshki Also, and I know it's ot, but the Colosseum appears to have had no bathrooms of any kind. That's a big crowd for having no porta-pottys.
18:19 Snert_ romans thought nothing of dropping your drawers with Sister Mary on the stool next to you.
18:19 Snert_ so I figger the top was was tiolet bench.
18:20 Snert_ they were pretty good with running water.
18:21 Loshki I'm not sure. It's Rome in the summer, heat rises. And the only flavor air freshener is "rose petal"
18:22 Snert_ that's why the toilets are the top row of seats :)
18:22 Snert_ but okay....no toilets...wow.
18:23 Snert_ it's the no privacy thing that puts a stopper on the whole thing.
18:25 Loshki There were public toilets elsewhere in Rome. Army style rows of wooden seats, no partitions. This whole privacy thing is culture-specific, and fairly modern.
18:28 Snert_ did they drink coffee? That makes me have to visit the bathroom especially when I drink 4 cups.
18:28 Snert_ so in the coliseum I guess I just dont drink coffee before I go.
18:28 Loshki Sorry, wrong channel. This was meant for ##electronics...
18:30 akem artificially intelligent toilet i need from santa clauss imported from osaka.
18:30 veverak hmm
18:30 verak tried to make pavu-m
18:30 veverak sensor being not sensitive enough
18:30 veverak damn it
18:33 Loshki Sorry, no coffee for about, er, 10 centuries.
18:33 Loshki Hence the lack of decent programming
18:35 Loshki and lack of progress in AI (see! back on topic)
18:42 veverak and it's hard to debug it with no equipment
18:47 anonnumberanon my potentiometers are wreaking havok when i action them too fast
18:47 anonnumberanon they mess with the ADC itself
19:08 veverak hmm
19:08 veverak well, need more sensitive MIC
19:08 veverak http://wiki.iteadstudio.com/Sound_Sensor/Microphone_Brick
19:26 rue_mohr anonnumberanon, did you put a filter on them? .01uF and a 1k resistor??
19:27 anonnumberanon rue_mohr, no
19:27 rue_mohr oh
19:27 rue_mohr from the wiper to one side, .01uF, from the wiper to the ADC 1k
19:28 rue_mohr by all means actaully use math to work out a proper filter, but alteast that would be something
19:28 rue_mohr also, ground out all unused inputs
19:28 rue_mohr often you find your code is really reading an adjacent channel thru the capacitive couplings on the chip pins
19:30 anonnumberanon fascinating
20:07 anonnumberanon ah, RC filter
20:09 anonnumberanon yeah okay that cap definitely makes it a bit better (from wiper to GND)
20:26 anonnumberanon heh with 100ms of refresh rate on the lcd display and the filtered slide potentiometer, it's feeling pretty pro
20:26 onnumberanon forces himself to go
21:05 robotustra https://www.youtube.com/watch?v=5oVN2puw59Q
21:12 Snert yea I like linear actuators
21:12 robotustra actually you have like 650 of them in your body
21:40 ace4016 interesting. youtube unsubscribed me from his channel
21:41 robotustra he he
21:41 e4016 can't be arsed to r
21:44 robotustra wow
21:44 robotustra I have got 1 more subsriber to my channel :)
21:44 robotustra in 2-3 months :)
21:51 anonnumberanon robotustra, people hate us
21:51 robotustra you mean robotmakers?
21:52 anonnumberanon yeah
21:52 anonnumberanon LOL
21:52 robotustra the most viewed videos on my channel are about my CNC mill, not about my robot's eyes :)
21:53 robotustra americans like to watch them
21:53 anonnumberanon heh
21:53 robotustra chinise, russians and germans are more curious about robotics
21:55 anonnumberanon you can make a badass cnc made eye socket im sure the eye will have more views
21:55 robotustra but I really don't care much, I just like to build
21:56 robotustra eyes will be more popular when I'll write real intelligence
21:57 robotustra and when they will work together with the neck and whole body
21:57 anonnumberanon ohh.. you alrady have badass eye sockets on them.. lol
21:57 robotustra did you see them
21:57 robotustra ?
21:58 robotustra they are cnc made actually
21:59 anonnumberanon cool . yeah im checking out your channel while building
22:00 robotustra now I'm building the base
22:01 robotustra going to build it from bottom to top
22:02 robotustra kind of this http://i.imgur.com/scLWV6I.png
22:03 anonnumberanon yeah man
22:04 robotustra simple box with batteries and 4 motors
22:05 anonnumberanon did you make sure you have search keywords for each video? that makes it easier for people to have the choice to see eyour video when they search something in Youtube
22:06 robotustra yeah, I put some, but I can't be 100% sure I chose right words
22:06 robotustra dunno what ppl are looking
22:07 anonnumberanon put all of them
22:07 anonnumberanon robots robotics artificial intelligence robot arduino computer
22:07 anonnumberanon lol
22:08 anonnumberanon programming
22:08 robotustra arduino
22:08 anonnumberanon ^even if don't user arduino, man
22:08 anonnumberanon trust me on that lol
22:08 robotustra I use actually
22:08 anonnumberanon then you can even add atmel, atmega, atmega328p, etc
22:09 anonnumberanon computer vision
22:09 robotustra atmega 32u4
22:09 anonnumberanon avr
22:10 robotustra is it you who just subscribed?
22:12 anonnumberanon nah
22:16 robotustra I would make a bit different joint for servo
22:16 robotustra I would make a rubber button + encoder for feedback
22:16 anonnumberanon me?
22:17 robotustra yeah
22:17 robotustra but ma be it's too complicated for now
22:17 anonnumberanon this was temporary, im building slide potentiometers right now
22:17 anonnumberanon slide pot board is almost ready
22:17 anonnumberanon final commands will be a gamepad
22:18 robotustra for feedback or for control?
22:18 anonnumberanon only feedback on this thing will be an accelerometer/gyroscope in the body or head
22:18 robotustra too few sensors
22:19 robotustra I'll have a lot
22:19 anonnumberanon for control: gamepad will control walk speed and direction, buttons for special moves
22:19 anonnumberanon making this walk is so hard that im not worried about any other sensors than the accelerometer heh
22:19 robotustra more sensors you use - more sophisticated control you can do
22:20 anonnumberanon pressure sensors on the underside of the feet?
22:20 robotustra https://www.youtube.com/watch?v=g9exlSW3HK0
22:21 robotustra may be
22:21 robotustra https://www.youtube.com/channel/UC-ujS0hAM5-RNMRyI4HUZmA
22:21 robotustra small clever robot
22:23 robotustra are you in canada?
22:25 anonnumberanon brb gotta solder
22:26 robotustra ok, I gonna sleep
22:26 robotustra bye