#robotics Logs

Jan 08 2014

01:05 dunz0r Usually never. And when it is, it's not about robotics :(
01:06 DagoRed not true.
01:06 DagoRed Rue is pretty nutty at times and actually talks about robotos
01:09 dunz0r You're correct.
01:09 dunz0r I should talk about robots more... but I haven't worked on any of my robots in several months now :(
01:12 Duzz ok then
01:12 Duzz stuart platforms, go
01:21 Faek Rue indeed talks about robots the most
01:23 MrCurious robustra also talks robotics
01:23 Faek Robustra also goes off on weird tangents though
01:24 MrCurious i think the trick is to ask some questions, and wait 24 hours for an anwer, then seek the person who answered it at a time similar to when they answered but the next day
01:24 MrCurious dont we al
01:24 MrCurious clever and creative come with a price...
01:25 MrCurious MAAS/JUJU is winding me up
01:46 rue_bed I just dont talk enough in general
01:47 rue_bed ask me questions, ones that dont involve pointless matrix math
01:47 chupacabra a good quality
01:48 chupacabra talk is cheap. listening has the answers
01:49 chupacabra is gcode still viable for robotics?
01:50 MrCurious i havent seen it center stage for anything but 3d printers and cncs of late
01:50 MrCurious used to see it for delta bot arms
01:50 MrCurious and some 3dof arms and scaraa
01:51 MrCurious but i am still new to this only 2 yeaars
01:52 Jak_o_Shadows I am playing with an ornithopter nowadays :D
01:52 MrCurious gram size or much bigger
01:54 MrCurious Jak_o_Shadows: ?
01:54 chupacabra cool. used to sp[eakit in my sleep.
01:54 chupacabra ornithopters are cool.
01:55 chupacabra i have a taube aircraft on the building board
01:55 Duzz im unemployed and all my projects are still stuck in my head/on paper
01:56 chupacabra i have my hero 1 with arm from the 80s i built
01:56 Jak_o_Shadows much bigger.
01:56 Jak_o_Shadows 72" wingspan.
01:56 chupacabra and a raspberry pi with more power
01:57 chupacabra ya, i have a .49 four stroke for power
01:58 chupacabra it should stunt somewhat!!!
01:59 MrCurious nice i look forward to pictures and video for inspiration :)
02:00 dunz0r I should get going on that stereoscopic platform I had been thinking about.
02:00 dunz0r Too bad that videoprocessing so cpu-heavy for a decent framerate
02:01 MrCurious dunz0r: colaborate with robustra, he has one that is built
02:01 dunz0r Would've been nice to be able to use something small like a Beaglebone or RPI
02:01 Duzz dunz0r, FPGAs for the awesome
02:01 MrCurious there is a new intel board coming out 6 months from now 400mhz pentium in a SD card size
02:02 MrCurious was thinking that oculd do early analysis on video like setting attributes like face present... other thing present and so on, to trigger face recognition pipeline analysis and other optional analysises
02:05 MrCurious we are all time travelers who have lost the ability to travel in reverse
02:08 dunz0r Duzz: I've been considering it, but I don't think I've got time to learn about FPGAs... should one day though.
02:10 MrCurious sweet. bumping vm memory size MAY have solved the issue!
02:10 dunz0r Hmm... maybe two rPis/Beaglebones could do it. One that does the videoprocessing/stereoscopic finding thingie and one that runs the neural network
02:10 MrCurious nope
02:11 dunz0r Because I really want to play with neural networks.
17:11 MrCurious I think teaching kids how to turn a cocroach into a robot is a bad idea. Not sure we teach the right ethics to prevent them from doing the same to people once the tech gets there....
17:15 ace4016 :D
18:10 GargantuaSauce i for one welcome our new cyborg overlords
18:58 MrCurious GargantuaSauce: wait... why are those wires coming down out of your hair line....
20:50 MrCurious Theres no such thing as beer-flu....
21:17 robotustra_ epic fail
21:17 robotustra_ http://www.youtube.com/watch?v=_xUa_q29V-s
21:17 robotustra_ telesouffler was broken
21:18 robotustra_ AMERICA AMERICA
21:18 robotustra_ WHAT'S WRONG WITH YO?
21:19 robotustra_ NOTHING TO SAY ABOUT NEW SAMSUNG ZOMBOBOX?
22:01 Jentrep Has anyone here worked on guidance systems for drones? :)
22:03 MrCurious yes, people have done that as evidenced by the afghan war
22:04 Jentrep Oh never heard of it :)
22:04 Jentrep ;P
22:05 Jentrep I mean acn anyone tell me about the system design?
22:05 Jentrep *can
22:05 MrCurious have you asked that google guy?
22:05 Jentrep From software to sensors, etc.? :)
22:05 MrCurious he seems real smart
22:05 Jentrep What Google Guy?
22:05 MrCurious he has a website where you can send him questions and tells you all he knowsabout it
22:05 MrCurious want me to introduce you?
22:06 Jentrep Oh cool. Do you have a link? :)
22:06 Jentrep >_>
22:06 MrCurious google.com
22:06 MrCurious ask him anything
22:06 Jentrep I thought you were talking about a cool guy who works at Google Robotics or something >_>
22:06 MrCurious sometimes i cant help letting my inner troll out
22:06 Jentrep You do remember that Google is now a robotics company don't you? >_>
22:07 MrCurious they are now
22:07 MrCurious bet they index their own robotic divisions too
22:07 Jentrep Uh ... I doubt it
22:07 Jentrep I doubt all that is past the paperwork yet
22:07 MrCurious suppose i am asking if you did the prequisite several searches to read the ow hanging fruit on th subject matter or if you were wanting someone here to pre-digest it
22:08 MrCurious ow = low
22:09 MrCurious this keyboard sucks
22:09 GargantuaSauce when you say drones what are you talking about
22:09 robotustra_ now all robotics guys work in google
22:09 GargantuaSauce fixed-wing aircraft? multirotors?
22:09 MrCurious remember the NDA guys...
22:09 robotustra_ because google buy them usually
22:10 robotustra_ what is NDA? it is nothing
22:10 robotustra_ nobody will pursuit you
22:10 Jentrep Garganta I am really not concerned witha specific plane design :)
22:10 Jentrep *a
22:11 Jentrep I am more interested in the general design principles and more importantly the software involved
22:11 GargantuaSauce i doubt you're going to find any useful literature that is that broad
22:12 ace4016 when you say guidance system, what do yo mean exactly?
22:12 Jentrep I imagine though that the Control System layout is an accumulation of design efforts over the past several years of Aerospace work?
22:12 Jentrep Guidance Protocols :)
22:12 ace4016 the control system would be seperate from the guidance systems
22:12 Jentrep Really?
22:12 ace4016 by guidance, i'm guessing you mean navigation?
22:13 Jentrep Sure :)
22:13 ace4016 sure or yes?
22:13 ace4016 :P
22:13 Jentrep I figured anything classified under 'guidance' would be a subsystem of the overall Flight Control System
22:13 GargantuaSauce okay hold on here
22:13 Jentrep An guidance system types :P
22:13 ace4016 navigation usually isn't
22:13 GargantuaSauce where are you and where are you going with this
22:13 GargantuaSauce before we run some semantic discussion into the ground, what's your deal
22:14 Jentrep I work for the KGB
22:14 ace4016 guidance also is more spoken for missiles >_>
22:14 Jentrep I came to the future to steal American secrets
22:14 Jentrep :P
22:14 ntrep says in Russian ac
22:14 ace4016 i mean, there are VOR towers and such that all planes can technically use to know where they are and such
22:15 ace4016 but that's really navigation
22:15 ace4016 not sure what special scheme or so you're looking for
22:15 robotustra_ Jentrep: russia is sleeping now
22:15 Jentrep I guess most military drones operate on Military GPS
22:15 Jentrep ?
22:15 ace4016 you have GPS/INS, you have some waypoints and you fly theym
22:15 robotustra_ ты уже проснулся?
22:15 ace4016 yup
22:16 GargantuaSauce gps for navigation, sure. interial for stability control
22:16 GargantuaSauce inertial.
22:16 GargantuaSauce alcohol makes for misplaced letters, it would seem
22:16 Jentrep what sensory types are used for interial control?
22:17 Jentrep to measure inertia?
22:17 Jentrep *inertial
22:17 robotustra_ he is not russian
22:17 Jentrep air barometers?
22:17 GargantuaSauce yes that is one, MEMS sensors is another
22:17 Jentrep robotustra_: as far as you know I am not human
22:17 ace4016 gyros, compasses, baro altimeters, etc.
22:17 robotustra_ most probably he is a spy from IRAQ
22:17 ace4016 typical plane stuff
22:18 ace4016 drones are no different from regular plans apart from not having the human sit in the cockpit
22:18 Jentrep which companies sell the best sensors?
22:18 ace4016 planes*
22:18 Jentrep Say in quantities of at least 10k?
22:18 ace4016 rockwell? :P
22:18 robotustra_ chinese
22:18 ace4016 honeywell
22:18 robotustra_ ebay
22:18 ntrep quickly roves his eyes back and f
22:19 GargantuaSauce ST has a line of MEMS sensors
22:19 Jentrep Oh I know Rockwell and Honeywell
22:19 GargantuaSauce AD has another
22:19 Jentrep I didnt know they made sensors for flight control
22:19 Jentrep I thought they focused on Industrial Plants
22:19 Jentrep I like Chinese ... should be cheap
22:19 Jentrep Which Chinese manufacturers are there?
22:19 robotustra_ so go shop ebay
22:19 GargantuaSauce but seriously, what do you have in mind
22:19 robotustra_ noname of cause
22:20 Jentrep i dont get ebay in my country
22:20 Jentrep :P
22:20 robotustra_ what country are you from?
22:20 Jentrep North Korea
22:20 ntrep sh
22:20 GargantuaSauce a north korean with comcast internet
22:20 robotustra_ there is no internet in North Korea
22:20 Jentrep No but really you guys are overly paranoid about my questions about drones LOL
22:20 robotustra_ except that you are a gouverner
22:21 Jentrep I am Kim Jong Un!
22:21 robotustra_ I see, fuck off than
22:21 Jentrep Okay lets get real ... I am a Terminator sent back from the future. Duh!
22:21 MrCurious say yo to dennis for me. big fan
22:21 robotustra_ in this case you should know more about sensors than we are
22:21 GargantuaSauce my desire for information is not paranoia, i am trying to nudge you in the right direction instead of blindly giving you information that will be useless to you
22:22 GargantuaSauce so what are you looking to build
22:22 Jentrep I am looking to see if I can build a very simple flight system :)
22:22 GargantuaSauce for what sort of airframe
22:22 Jentrep And run custom software on top :P
22:22 robotustra_ I know that good kick in the ass can give right direction as well
22:22 Jentrep I mostly want to play around with the software
22:22 MrCurious does it need take off and land or just take off?
22:23 Jentrep Is there a simulator that will accept C programs? :O
22:23 robotustra_ if you can't buy from ebay - forget about robotics
22:23 Jentrep LOL I have no idea if it needs to have landing :P
22:23 robotustra_ do you have credit card?
22:23 Jentrep By just take off do you mean: crash land?
22:24 Jentrep I have much ruble
22:24 robotustra_ да ниужели
22:24 GargantuaSauce eto pohui
22:24 robotustra_ еще один
22:24 MrCurious enough aesops fables already
22:25 robotustra_ GargantuaSauce: who teach you such bad words?
22:25 GargantuaSauce dvach
22:25 robotustra_ ok
22:25 robotustra_ evil boy
22:25 GargantuaSauce :)
22:25 MrCurious we have no time for a ruble in the bronks
22:25 robotustra_ sure
22:25 robotustra_ bronks
22:25 robotustra_ no ebay
22:25 robotustra_ pity
22:25 robotustra_ no ebay == no robotics
22:26 robotustra_ because the cheapest sensors are there
22:26 Jentrep i already told you I have no ebay in country
22:26 Jentrep D:
22:26 robotustra_ what do you have then?
22:26 Jentrep Unbay
22:26 robotustra_ tindie.com?
22:27 robotustra_ India?
22:27 robotustra_ Himalai?
22:27 Jentrep No KimJongUnbay
22:27 Jentrep .nk
22:27 robotustra_ I don't beleive you
22:27 Jentrep *berieve
22:27 robotustra_ nobody is allowed to go to internet
22:28 Jentrep I am.
22:28 Jentrep i AM internet.
22:28 robotustra_ because it will be killed by government
22:28 MrCurious someone note the time that the net became self aware
22:28 Jentrep Now you know
22:28 Jentrep ^
22:28 robotustra_ when Kim Chen Un became a leader?
22:28 MrCurious hi kat
22:28 Jentrep This is why I want to learn about Sensors
22:28 Jentrep I am the internet learning how to kill ...
22:28 Jentrep you.
22:29 Jentrep Filthy Humans.
22:29 robotustra_ internet cannot buy sensors into internet
22:29 Jentrep So ebay is actually a good place to find cheap sensors/electronics?
22:29 GargantuaSauce http://dx.com/p/148436
22:30 GargantuaSauce yes
22:30 GargantuaSauce or aliexpress or sometimes dx
22:30 GargantuaSauce http://www.youtube.com/watch?v=C7JQ7Rpwn2k
22:31 GargantuaSauce that has a pretty good description of the algorithmic approach to orientation estimation using a sensor like the above
22:31 Jentrep nm i just turn smartphone into drone. I glue wings on.
22:31 GargantuaSauce you do that
22:31 Jentrep okay cool thanks GargantuaSauce I'll take a look :)
22:33 robotustra_ this sensor is bad
22:33 robotustra_ has big noise
22:34 GargantuaSauce you mean because it doesn't have an antiquated microcontroller running proprietary software onboard?
22:34 GargantuaSauce the sensor is 12 dollars. it's a start.
22:35 robotustra_ http://www.ebay.com/itm/YEI-3-Space-Sensor-3-axis-9DOF-Miniature-Embedded-IMU-AHRS-/140911540741?pt=LH_DefaultDomain_0&hash=item20cefb7a05
22:35 robotustra_ yes
22:35 robotustra_ and I'm sure you'll not write it yourself
22:37 Jentrep Why are you stressing ebay so much lol?
22:37 MrCurious cheap
22:37 MrCurious pay more, hunt longer elsewhere
22:37 robotustra_ because nobody sell cheaper
22:38 Jentrep less ruble?
22:39 Jentrep In soviet Russia ruble less YOU.
22:39 robotustra_ I suspect Jentrep troll me
22:39 robotustra_ Jentrep == MrCurious
22:40 MrCurious oh oh ! the jig is up
22:40 MrCurious my stomach is rubleing
22:40 robotustra_ i go sleep
22:40 robotustra_ bb
22:41 Jentrep night night :)
22:42 MrCurious pick a number between 1 and 10
22:42 Jentrep 3.14159
22:42 MrCurious that is totally the number i had in mind, how did you know!
22:42 MrCurious are you inside my mind?
22:42 Jentrep Yes. :)
22:42 Jentrep I am Russian Skynet.
22:43 Jentrep From Future.
22:43 Jentrep Much Ruble to built me.
22:55 GargantuaSauce what should i do to straighten lengths of threaded rod that are bent a bit
22:56 GargantuaSauce GuShH_: rue_shop3
22:59 GargantuaSauce it's 5/32 and like a metre long
23:03 Jentrep So these guys dont have good prices? https://www.sparkfun.com/categories/80
23:03 Jentrep Just how overpriced are they?
23:03 Jentrep 3-axis gyro/accelerometer on ebay is on average what?
23:04 ace4016 lol...sparkfun is for people that don't know what they're doing and have too much money on their hands :P
23:04 Duzz Sparkfun is a nice interface to get you pointed at the right direction on digikey
23:05 GargantuaSauce well the one i linked to has ADXL345 HMC5883 ITG3205
23:05 GargantuaSauce the breakout on sparkfun for ADXL345 is $25
23:06 GargantuaSauce that should tell you enough
23:06 GargantuaSauce sparkfun, adafruit, etc, have ridiculous markup
23:07 GargantuaSauce they might claim to have value added in the form of example code, documentation, etc but usually that is pretty shitty (and is available whether you buy it there or not)
23:10 GargantuaSauce great way to waste a bunch of money and fund organizations that thrive by encouragomg others to do the same
23:10 GargantuaSauce encouraging*
23:15 Jentrep Okay okay I get it :P
23:15 Jentrep So who is selling on ebay then?
23:15 Jentrep Home electronics makers?
23:15 Jentrep Wholesalers?
23:15 MrCurious adafruit
23:15 Jentrep who?
23:16 Jentrep Who is that?
23:16 Jentrep And I thought you guys just told me to stay away from them? :P
23:16 GargantuaSauce http://www.ebay.ca/sch/i.html?_nkw=9dof+imu
23:16 Jentrep why is lidar so expensive?
23:17 GargantuaSauce because it involves precision optics and/or measuring time-of-flight for light
23:17 GargantuaSauce which is ridiculously small and thus requires high precision
23:17 Jentrep :(
23:17 GargantuaSauce high precision -> high cost
23:17 Jentrep high precision --> no chinese labor
23:17 Jentrep :(
23:17 GargantuaSauce http://www.ebay.ca/sch/i.html?_nkw=10dof+imu if you want a barometer
23:18 Jentrep Y they charge more for manufacturing done by robots? D:
23:18 Jentrep The bastards >_>
23:20 Jentrep I wish they would put coins in the pictures of the elctronics :/
23:20 Jentrep *electronics
23:21 GargantuaSauce they usually have dimensions
23:22 GargantuaSauce http://www.ebay.ca/itm/10DOF-IMU-MPU6050-HMC5883L-BMP085-Flight-Control-Gyroscope-Acceleration-Compass-/360805656195?pt=LH_DefaultDomain_0&hash=item5401b16683
23:22 GargantuaSauce 20x16mm
23:22 Jentrep so most of these are just going to be 8-bit wings to attach to some microcontroller board? :)
23:23 GargantuaSauce where are you getting 8 bits from
23:23 Jentrep the attachment pins?
23:23 GargantuaSauce maybe you should actually look at the pinout
23:24 GargantuaSauce instead of making completely impossible assumptions
23:24 Jentrep Like this guy: http://www.ebay.ca/itm/GY-85-Sensor-Modules-6DOF-9DOF-IMU-SENSOR-e-/251267552082?pt=LH_DefaultDomain_0&hash=item3a80b69352&_uhb=1
23:24 Jentrep impossible? :O
23:24 Jentrep D:
23:24 GargantuaSauce power and data are usually not on the same lines
23:25 GargantuaSauce look at the third picture
23:25 MrCurious unless you look at sending data over house current lines...
23:27 Jentrep so 5 bit? D:
23:28 Jentrep Need to write an IIC driver? :(
23:28 ntrep
23:28 ntrep cries eve
23:32 MrCurious I2C?
23:32 Jentrep yeah lol :P