#robotics Logs
Jul 01 2014
#robotics Calendar
01:02 rue_shop2 sweeeeeet
04:50 deshipu my first hand-coded quadruped gait: https://www.youtube.com/watch?v=CtJfRKRbgW4
04:51 deshipu next step: IK
04:52 Jak_o_Shadows I have been tempted to build a hexapod similar to http://stubby.digitalcave.ca/stubby/
04:52 Jak_o_Shadows IK is fun.
04:54 deshipu hexapods are too easy ;)
04:55 deshipu just kidding, the whole thing is pretty difficult
04:55 Jak_o_Shadows I've only done IK for a couple of limbs on a robot arm, but it doesn't handle constraints well
04:57 deshipu stubby looks very nice
04:57 Jak_o_Shadows Yeah, it does
04:59 deshipu I want to put a gyro sensor in mine, and use it to hanle uneven terrain, but that's going to be a long time until I get it right
05:01 Jak_o_Shadows Yeah.
05:01 Jak_o_Shadows I wish there were more articles/info on finding the workspace of a maniuplator/arm, analytically
12:38 rue_house its not hard
12:57 Oblivion Hey ?
12:58 Oblivion anybody?
13:00 adam789654123 hey Oblivion
13:03 Oblivion hi adam789654123
13:03 adam789654123 hello
13:03 Oblivion how are you
13:04 adam789654123 fine
13:04 adam789654123 listening to some music
13:04 adam789654123 chattin a bit
13:04 adam789654123 thats about it i guess
13:05 Oblivion cool, afraid I might need some help, if possible?
13:06 rue_mohr2 what you doing?
13:06 Oblivion it's nothing concerning robotics, but very much resembles it...
13:07 Oblivion i need some sorta device that acts exactly opposite to a timed relay
13:08 adam789654123 oh..... well ill surely get you in trouble
13:08 adam789654123 hmmm
13:09 adam789654123 a non-timed non-relay
13:09 adam789654123 ;)
13:09 Oblivion when it gets the elctriical signal at t=0, it will engage.then at t=x it will disengage and go back to the rest position
13:09 deshipu a relay with a timed relay to switch it off :D
13:09 Oblivion hahah adam789654123 wish it was that easy
13:10 adam789654123 :D
13:10 Oblivion deshipu, im thinking :)
13:11 Oblivion ok deshipu I GET WHAT YOU MEAN
13:12 Oblivion but how will we deal with the electrical signal
13:13 Oblivion you see it's like a puch button pulse, and when i issue that pulse i want the relay to engage for x seconds then go back to rest...
13:14 Oblivion i think your idea works if the current is steady
13:14 adam789654123 something has to act as a timer, no?
13:15 adam789654123 so you engage something that times itself
13:15 adam789654123 the button simply engages it though
13:15 Oblivion already tried that
13:15 adam789654123 i mean, what are the options?
13:15 Oblivion it didntwork dono why
13:15 adam789654123 i dont see any other way
13:16 adam789654123 you need to engage something via a switch, or button
13:16 adam789654123 then it times itself before shutting off
13:16 adam789654123 cant you use a capacitor as a timer?
13:16 adam789654123 somehow?
13:16 Oblivion via a push button switch (like a doorbell)
13:16 adam789654123 yeah
13:17 Oblivion it's high voltage adam, i prefer not to go that way
13:17 adam789654123 http://www.technologystudent.com/elec1/capac1.htm
13:17 adam789654123 oh
13:17 adam789654123 ic
13:17 adam789654123 well, just for the timer though, why not?
13:17 adam789654123 like if you have a transistor, or a relay
13:18 adam789654123 the timer can be feed the relay
13:18 adam789654123 but the main power goes through the other terminals
13:18 Oblivion hang on, i'lll tell you the whole scenario
13:18 Oblivion a big flat
13:18 Oblivion we have to install a door bell
13:19 Oblivion 1is already installed via wire, and covers half of it
13:19 Oblivion the 2nd half is to be covered by a wireless doorbell
13:20 Oblivion because there isn't any extended wiring
13:20 adam789654123 ok
13:20 Oblivion the wireless bell hasthe wireless remote
13:21 adam789654123 ok
13:21 Oblivion but i can't put 2 bell push buttons at the door, right
13:21 Oblivion so i have to merge them into one
13:21 adam789654123 ok
13:21 adam789654123 so far, i get it
13:21 adam789654123 what else?
13:22 adam789654123 the issue with timing goes in here somewhere
13:22 adam789654123 i suppose
13:22 Oblivion and the problem is that the wired bell responds faster to the issied pulse because it's wired
13:23 adam789654123 what does that cause?
13:24 Oblivion however the wireless one, needs an additional 0.4 seconds for the signal to reach the bell
13:24 adam789654123 ok
13:25 Oblivion so if the person ringing the bell does a quick push/relax in the button only 1 bell will ring
13:25 adam789654123 ahhh
13:25 adam789654123 ok
13:25 Oblivion thanks for listening
13:25 adam789654123 no problem
13:25 adam789654123 not sure i can help, but the woods burning
13:26 adam789654123 hmmm
13:26 adam789654123 so you could also delay one?
13:26 adam789654123 so sync them
13:26 adam789654123 to*
13:26 Oblivion delay one?
13:26 xorly hmm, delayed release, that could be solved by 2 transistors, 1 cap and 1 resistor...
13:26 adam789654123 i mean, the issue is that they are not in sync
13:26 adam789654123 right
13:26 Oblivion exactly
13:26 adam789654123 so by delaying the fast one
13:27 adam789654123 by .4 seconds or whatever
13:27 adam789654123 the person hears the doorbell
13:27 adam789654123 who is ringing it
13:27 Oblivion one directly rings, the othe requires +0/4 secs
13:27 Oblivion 0.4
13:27 adam789654123 right
13:27 adam789654123 i mean, when i ring a doorbell, i listen for it
13:28 adam789654123 .4 seconds sounds about right
13:28 adam789654123 so if you delay the fast one, you can sync them
13:28 Oblivion no no
13:28 Oblivion hang on
13:28 xorly adam789654123: IMHO that is not best way
13:28 adam789654123 yeah
13:29 adam789654123 maybe the easiest though
13:29 Oblivion the problem is not with hearing the bell
13:29 adam789654123 but im winging it
13:29 adam789654123 im glad someone that maybe knows something is listening in
13:30 adam789654123 i thought you said someone could activate one bell without activating the other
13:30 adam789654123 so you may not hear the bell ring, on whatever floor
13:30 Oblivion the problem is that if you do a long push/relax it will work bith will ring. butif you do a quick one only 1 will ring becoz there wasn't enough time for the signal to go from remote to bell
13:30 xorly I just need few information about contruction of those bells (voltage levels, button acting and so on) there would be no problem...
13:31 Oblivion both will ring*
13:31 xorly is wired one DC ?
13:32 Oblivion AC
13:32 xorly and what about voltage?
13:33 Oblivion i just need a way to prolong the pulse for the rlay connected to the remote...
13:33 Oblivion 230 VAC
13:33 xorly yeah yeah, I clearly got it
13:34 Oblivion there is one push buttong at the door
13:34 Oblivion button*
13:35 xorly and question about wireles one, its button pulls control signal to ground or vcc?
13:36 Oblivion the 2nd wireless bell is dc battery powered. i dismenteled the remote and installed two wires instead of a button
13:36 Oblivion so now it will ring upon connecion of wires instead pushing a button
13:36 adam789654123 http://www.allaboutcircuits.com/vol_4/chpt_5/3.html
13:37 Oblivion sorry but i don't know the answer to your last question
13:37 adam789654123 normally-opened, timed-open
13:37 Oblivion thnx adam, checking it
13:37 adam789654123 that looks like its what you're looking for
13:37 rue_mohr2 it could be either, but I'd bet, wireless, batery powered, it is really a power switch
13:39 xorly I just need to know about polarity, to know how transistor use...
13:40 adam789654123 yeah
13:40 adam789654123 i hope he comes back and finishes talking to you
13:40 adam789654123 so he can be confident in his solution
13:41 Oblivion adam, if i understand correctly, it turned on, counted 5 seconds then closed, then opened when it turned off
13:41 adam789654123 thats what it seems, but just check out what xorly
13:41 adam789654123 he also has an idea
13:41 Oblivion i dont want that,i want it to close during the 5 seconds and then open
13:42 adam789654123 it "closes imediately"
13:42 Oblivion xorly how can i know polarity
13:42 adam789654123 "opens 5 seconds after coil de-energized"
13:42 Oblivion adam i was looking at the diagram
13:43 adam789654123 no it turned on immmediately
13:43 adam789654123 the opens after 5 seconds
13:44 Oblivion that's the point i dont have fixed energization. i have a pulse...
13:45 adam789654123 The pulse is gaurenteed for 5 seconds at a minimum
13:45 xorly drawing schematics in online painting, really pain :D
13:45 adam789654123 so if someone just touches the button, then the pulse lasts 5 seconds
13:45 adam789654123 but check out what xorly has to say
13:45 MrCurious GOAL!!!!!!!!!!!!!!!!!!!!!!
13:45 adam789654123 he has a plan
13:45 Oblivion adam perfect
13:46 Oblivion yes xorly
13:46 Oblivion polirization, how do i know it?
13:48 xorly ok simple messy schematic with no values... https://awwapp.com/s/9b/c8/2b.png
13:49 adam789654123 whats the `TX'
13:49 adam789654123 mutex?
13:49 xorly wireless bell transmitter
13:49 adam789654123 i only see one bell
13:50 xorly wireless bell itself (ringing part) stays unmodified...
13:50 adam789654123 whats that candy cane looking thing, an inductor?
13:51 xorly coil of relay
13:51 adam789654123 ok
13:51 xorly it was not easy to draw it with mouse/touchpad..
13:51 Oblivion yes xorly i get it.but im running away from construction my own custom circuit
13:51 Oblivion just prefer to bring a device nd connect it...
13:52 adam789654123 i hear yo,u
13:52 adam789654123 im interested in this though
13:52 adam789654123 :D
13:52 xorly so you don't wanna do a bit of sodering?
13:52 xorly soldering*
13:52 Oblivion lol i prefer not
13:52 adam789654123 whats that dotted line lookin thing going from the switch to the coil?
13:53 adam789654123 ohhh
13:53 adam789654123 thats like a transformer?
13:53 Oblivion the whole thing will be in the attick at the position of the wired bell
13:53 adam789654123 never mind
13:53 adam789654123 ic
13:53 adam789654123 the relay is basically like a mechanical transistor
13:53 Oblivion yes i know
13:54 adam789654123 and thats kind of the base or whatever
13:54 adam789654123 the low voltage one
13:54 Oblivion but a circuit is more fragile lol
13:54 Oblivion and i dont want hand made circuits having230 vdc and 10 amp circuit breaker
13:55 adam789654123 where's your carnal spirit?
13:55 Oblivion hehe, it's not my house
13:55 Oblivion it's the house of a friend
13:55 adam789654123 you didnt learn anything till the attics on fire
13:56 Oblivion dont want to coz a fire in the atting :P:P
13:56 adam789654123 haha
13:56 adam789654123 i know
13:56 adam789654123 im joking
13:56 xorly awww, relay separates 230VAC pretty well, but ok
13:56 adam789654123 if i could, i would make a circuit
13:56 Oblivion lol
13:56 Oblivion anyway addam
13:56 adam789654123 i just nod know what the hell im doing
13:56 Oblivion adam
13:56 adam789654123 oh
13:56 adam789654123 ic
13:57 adam789654123 what is the thing labeled `T'?
13:57 Oblivion thanks xo
13:57 Oblivion so normally open timed closed?
13:57 adam789654123 the way i figured it, as a mnemonic
13:57 adam789654123 is normally is just the default state
13:57 Oblivion thanks xorly**
13:57 adam789654123 so you want something that is open by default
13:58 adam789654123 then
13:58 adam789654123 uhh
13:58 Oblivion yes
13:58 adam789654123 hold on
13:58 Oblivion i want it but look at the diagram, it closes after the 5 secs have passed
13:58 adam789654123 timed open
13:58 adam789654123 so normally open, timmed open
13:59 adam789654123 so the defaule is open, and then changing the state from closed to open is timed
13:59 xorly I don't want to believe, that wired doorbell button switches 230VAC directly :\
14:00 adam789654123 hahaha
14:00 adam789654123 im sure it doesnt
14:00 adam789654123 maybe its one of these
14:00 adam789654123 https://www.youtube.com/watch?v=JaBh-B6F2sk
14:01 adam789654123 they dont show the device at the end though
14:01 adam789654123 :/
14:01 adam789654123 looks kind of like a doorbell
14:01 Oblivion xorly in lebanon it is...:(
14:03 adam789654123 xorly, im wondering what is the `T'?
14:03 Oblivion hey adam i think that's it ::D:D:D:D
14:03 adam789654123 im trying to understand your circuit
14:03 adam789654123 hey
14:03 adam789654123 wait a minute
14:03 adam789654123 where you think you're going?
14:03 adam789654123 ;)
14:03 xorly schematic sign for push button
14:03 adam789654123 good luck
14:03 adam789654123 oh
14:03 adam789654123 ahhh
14:03 adam789654123 ok
14:03 adam789654123 that makes sense
14:04 adam789654123 so thats the buzzer
14:05 Oblivion wait the normally open timmed open one, it will close and start counting even if it is energized for 0.1 sec right?
14:06 adam789654123 either that or your gonna have to study thing schematic
14:06 adam789654123 you might have to build one of these things!
14:06 adam789654123 :D
14:06 xorly Oblivion: but this one has 12V trigger input http://www.ebay.com/itm/POSITIVE-PULSE-ACTIVATING-TIMER-SWITCH-RELAY-DELAY-OFF-1-TO-270-SEC-KIT-10A-12V-/281173747679
14:07 adam789654123 that looks nice
14:07 adam789654123 you can adjust the time
14:07 Oblivion thanks adam and xorly you really helped
14:07 adam789654123 you're welcome
14:12 Oblivion i will go now, take care guys
14:12 adam789654123 take care
14:12 Oblivion thanks again
14:12 adam789654123 so you puth the button, and obviously the bell gets voltage, but i dont see how the transmitter gets voltage
14:12 adam789654123 *push
14:14 xorly damn he left, I found it... http://www.ebay.com/itm/220VAC-Power-off-delay-timer-time-relay-0-1-second-base-PF083A-/261285925147
14:15 adam789654123 i think he wanted more than one second though
14:15 adam789654123 like, i think he was happy with the 5 seconds from the website
14:15 xorly there are 10,30 and more seconds versions
14:16 adam789654123 xorly, im trying to understand your diagram
14:16 adam789654123 and i am confused about what is going on at the realy
14:16 adam789654123 relay
14:16 xorly do you understand basic principle of transistor?
14:16 adam789654123 yes
14:17 adam789654123 that the power is going through the uhh, gate or base or whatever
14:17 adam789654123 and its determining the current going through the other two terminals
14:17 adam789654123 or the voltage or one determines the current through the other two
14:18 adam789654123 i think the actual flow of electons is opposite the arrow
14:18 adam789654123 and out the top part
14:18 adam789654123 "top"
14:18 adam789654123 but basically like a relay
14:21 xorly ok, in first phase:( when button is pressed) relay connects capacitor to supply volage of wireless transmitter and capacior charges quickly, when capacitor voltage rises above 0.7V, transistor opens
14:21 adam789654123 like, in your diagram, the voltage at signal is determining the current from gnd to the resistor
14:22 adam789654123 i maybe think you can clear something up for me, that might be the cause of my confusion
14:22 adam789654123 there are two boxes by the coil
14:22 adam789654123 where it looks like a switch
14:23 adam789654123 are these the different polarities?
14:23 adam789654123 as in, vcc is attached directly to one polarity
14:23 xorly second phase (released button) relay is not switched so no power goes to capacitor, transistor discharges capacitor and stays switched until capacitor voltage drops below 0.7V, capacitors charge causes that delayed off
14:24 adam789654123 while the `signal' `ground' circuit are attached directly to the other polarity
14:24 adam789654123 where the little boxes are like reduced `+' and `-' voltages
14:24 xorly huh, polarity? I'd keep it away for simple principle
14:24 adam789654123 so that the relay would have, say four terminals
14:24 adam789654123 ok
14:25 adam789654123 the relay has four terminals?
14:25 adam789654123 the coil?
14:25 adam789654123 im wrong
14:25 adam789654123 im looking it up now
14:25 adam789654123 apparenty, the typical coil has 3 terminals
14:26 xorly yeah, relay have basicaly 4 terminals (or at least, we are interested in 4 of them) 2 are coil and 2 are mechanical switch which gets shorted by connecting coil to power supply
14:26 adam789654123 ok
14:27 xorly I lost your questions in that flood...
14:27 adam789654123 oh
14:27 adam789654123 uh
14:27 adam789654123 that the two boxes by the coil are two terminals of that coil
14:27 adam789654123 i think the thing that is confusing me (besides i dont know how to read this stuff)...
14:28 adam789654123 is that it looks like there is a switch from one box to the other at the relay
14:28 adam789654123 but then i cant see how power is pulled or pushed through the system
14:28 adam789654123 so
14:29 adam789654123 + ----- wire ---- -
14:29 adam789654123 i can understand how the power flows
14:29 adam789654123 but
14:29 adam789654123 or
14:29 adam789654123 maybe
14:29 adam789654123 well, im simplifying
14:29 adam789654123 i mean i understand that its ac
14:30 adam789654123 heres my guess
14:30 adam789654123 when that switch is close by the terminal
14:30 adam789654123 when that switch is close by the coil
14:30 xorly exactly
14:31 adam789654123 the coil induces ac in the connected circuit
14:31 adam789654123 i mean
14:31 adam789654123 im not exactly sure
14:31 adam789654123 i know im not quite getting something here
14:31 adam789654123 are my on the right track?
14:32 adam789654123 with inducing the current from the one circuit to the other?
14:32 adam789654123 or voltage i guess
14:32 adam789654123 with inducing the voltage from the one circuit to the other?
14:32 adam789654123 or is that more like a transformer
14:32 adam789654123 i know these things have overlapping principles and such
14:32 adam789654123 grrr
14:33 adam789654123 maybe ill get it one of these days
14:33 xorly nope, that realy completely isolates those circuits
14:33 xorly main reason why it it there
14:33 xorly it is*
14:34 xorly wireless doorbell transmiter (box with button) has its own power (probably from batteries)
14:34 adam789654123 ohhhhhh
14:34 adam789654123 now i get it
14:34 adam789654123 ok
14:34 adam789654123 that put it all together for me
14:34 adam789654123 i was wondering how the power was flowing through that section of the circuit
14:35 adam789654123 now i know it is powered by the batteries
14:35 adam789654123 the switch of which is determined by the relay
14:35 adam789654123 connected to the button
14:35 adam789654123 or powered by the buzzer button
14:36 adam789654123 and i dont know the specifics about how to make a timer circuit
14:36 adam789654123 but i do see the capacitor there
14:36 adam789654123 and i understand what you said about quick charge and slow release
14:36 xorly purpose of relay it merge two buttons into one, rest of circuit is for delayed off
14:37 adam789654123 pehaps the purpose of the resistor from the capacitor to the transitor is to control the speed of that release
14:37 adam789654123 pehaps the purpose of the resistor between the capacitor to the transitor is to control the speed of that release
14:37 adam789654123 cool
14:38 xorly yup and transistor current to base (gate) cant exceed some value
14:38 adam789654123 AWSOME!!!
14:38 adam789654123 cool
14:38 adam789654123 so i get it a little bit more then before now
14:38 adam789654123 i mean, i would take me a long time to try to actually, figure out the math for the exact components
14:39 adam789654123 but very cool
14:39 xorly it is not difficult circuit ;) hope you learned something useful
14:39 adam789654123 well learned something that i wanted to
14:39 adam789654123 :D
14:39 adam789654123 maybe useful one day
14:39 adam789654123 thank you
14:39 adam789654123 i want to learn electronics one day
14:40 adam789654123 as in, work with electronic circuits
14:40 adam789654123 but it is not easy
14:40 adam789654123 there is alot of physics and math involved
14:40 adam789654123 i think it was alot easier to learn programming then it would be to learn electronics
14:41 xorly it is huge amount of knowledge, eg. I am interested in digital electronics and micocontrollers mainly, but analog knowledge is needed too
14:41 xorly analog electronics*
14:42 adam789654123 how about elecro-mechanical stuff
14:42 xorly most important thing is doing various projects/experiments and get involved
14:42 adam789654123 yeah
14:43 adam789654123 ill do it within the next few years, i think
14:43 adam789654123 but i want to keep learning bit by bit in the meantime
14:43 adam789654123 i just dont have the resources now
14:43 xorly don!t plan, just do something ;)
14:43 adam789654123 but i am studying math
14:43 adam789654123 well, i am doing stuff
14:44 adam789654123 and i figure the math can help me to with anything physics related
14:44 adam789654123 which among them is electronics
14:44 adam789654123 im also interested in physics
14:44 xorly yup, btw phisics is not my good friend, I suck at it
14:44 adam789654123 haha
14:44 xorly physics*
14:45 adam789654123 but then again, electronics requires some knowledge of physics
14:45 adam789654123 so you have that going for you out of the gate
14:46 adam789654123 i would like to have a good comprehension of classical/newtonian mechanics one day
14:46 adam789654123 its still so usefull
14:46 adam789654123 probably always will be
14:46 xorly I hope, I won't need it :D
14:47 adam789654123 haha
14:47 adam789654123 i kind of think of it as looking at reality as if it was a certain kind of computer
14:47 xorly hmm, maybe it is reason, why I have to study physics on university once again :\
14:47 adam789654123 maybe
14:47 adam789654123 maybe youll even like it this time through
14:47 adam789654123 if you get lucky
14:47 adam789654123 they teach it in an engaging fashion
14:48 adam789654123 i found a physics book in a language im studying
14:48 adam789654123 online for free
14:48 adam789654123 which i thought would be cool to both study the language and physics
14:49 xorly I don't like studing with knowledge only purpose. I prefer to study something, because it is needed in some project
14:49 adam789654123 http://esperantosudtirolo.wordpress.com/category/projektoj/fiziklibro/
14:49 adam789654123 yeah, i understand
14:49 adam789654123 then again, the pressure can be killer
14:50 adam789654123 it just seems more pleasant to learn things that you will likely need to know, eventually
14:50 adam789654123 i understand though
14:50 adam789654123 i mean, its also really important to actually practice stuff, or learn it in a tangible way
14:50 adam789654123 not just be theoretical about everything
14:51 adam789654123 but i think there is something that each approach lends to the product
14:51 adam789654123 the prep work, and the direct struggle
14:51 xorly :D my native language is not english, so I'll rather stay with english texts
14:51 adam789654123 what is your native language?
14:52 xorly czech :)
14:52 xorly little country in central Europe, Czech repiblic
14:52 xorly damn, republic*
14:53 adam789654123 yeah
14:53 adam789654123 uh
14:53 adam789654123 trying to think exactly where that is
14:53 adam789654123 thats in the Balkans?
14:53 adam789654123 is that on the west coast?
14:53 adam789654123 or western part of the balkans?
14:53 adam789654123 now ive got to look it up
14:53 adam789654123 :D
14:54 xorly 1 picture instead of thousand words... http://en.wikipedia.org/wiki/Czech_Republic#mediaviewer/File:EU-Czechia.svg
14:54 adam789654123 haha
14:54 adam789654123 i was thinking Coatia
14:54 adam789654123 :/
14:55 adam789654123 you're north of Austria and Hungry
14:55 adam789654123 Czech Republic and Slovakia
14:55 xorly Hungary :D
14:55 xorly yup
14:55 adam789654123 these used to be unified
14:56 adam789654123 how old are you?
14:56 xorly used to
14:56 adam789654123 how long now?
14:56 am789654123 goes fishing in the
14:58 adam789654123 since 1993
14:59 adam789654123 "In 1992, because of growing nationalist tensions in the government, Czechoslovakia was peacefully dissolved by parliament. On 1 January 1993 it formally separated into two independent countries: the Czech Republic and the Slovak Republic."
15:00 xorly yeah
15:01 adam789654123 Austria-Hungry dissolved back in 1918
15:01 xorly I born to separated country :)
15:01 adam789654123 interesting
15:02 adam789654123 its funny thought that i have those so burned into my consciounsess
15:02 adam789654123 Czechoslovakia, and Austria-Hurgary
15:03 xorly oh cool, lot of pictures found by google on "xorly" keyword are shot by me :D
15:03 adam789654123 https://www.youtube.com/watch?v=JMgbWtEM6nk
15:05 xorly this oe is from International Engineering Fair which I visited
15:08 adam789654123 gives me an idea of how precise things have to be arranged in order for something like that to be able to work
15:08 adam789654123 i mean
15:09 adam789654123 if it cant detect, and is simply programmed a pattern of movement
15:10 adam789654123 https://www.youtube.com/watch?v=FaIKpXBMNQ0
15:11 adam789654123 what language you using?
15:13 adam789654123 cool
15:13 adam789654123 ok
15:14 GargantuaSauce nice
15:14 GargantuaSauce i keep meaning to make a POV display of some sort
15:15 GargantuaSauce but get scared when i envision big arms spinning at high speed
15:15 GargantuaSauce launching LEDs at high speed
15:15 GargantuaSauce etc
15:15 adam789654123 so the signal to the row is changed according to its orientation?
15:15 adam789654123 thats pretty fricken cool
15:15 adam789654123 how about a fan
15:15 adam789654123 ?
15:16 adam789654123 but you would need some sort of model
15:16 xorly oh, Iam back
15:16 adam789654123 some sort of computational model
15:16 adam789654123 hey xorly !
15:16 xorly that display is programmed in C
15:16 adam789654123 checking out your LED POV thing
15:16 adam789654123 ok
15:16 adam789654123 what do you think about using a fan?
15:16 adam789654123 for something like that?
15:16 adam789654123 im just wondering
15:16 xorly it would be too simple :D
15:17 adam789654123 really
15:17 adam789654123 oh
15:17 adam789654123 well im just a simple person
15:17 GargantuaSauce well there's one issue with a spinning thing and that's that either the whole electronic assembly needs to spin with it, or you have slip rings or something
15:17 adam789654123 i was thinking of there was a way for it to detect a revolution
15:17 adam789654123 you could divide the revolution
15:17 adam789654123 and make some kind of message on a disk or something
15:18 xorly you can use coils from wireless chargers for smartphones ;)
15:18 GargantuaSauce ya just a single hall sensor or whatever would be fine
15:18 adam789654123 to detect a revolution?
15:18 adam789654123 maybe im out of the loop
15:18 adam789654123 i have only vague ideas on how to do something like that
15:18 xorly but this hal sensor must be mounted to stator part
15:19 adam789654123 like if you could have a sensor detect a revolution, you could divide the revolution into sectors
15:20 xorly you can measure duration od on revolution and then whole revolution divide by timing
15:20 adam789654123 exactly
15:20 adam789654123 like the od would be the lowest resolution
15:20 adam789654123 for the spinning strips image
15:20 adam789654123 anyway, seems like a cool thing
15:21 xorly we are eorking on similar projet with my friend, codename spinmatrix, but it is frozen now
15:22 xorly working*
15:22 adam789654123 still physics related stuff, it seems, dealing with time and space
15:23 adam789654123 https://www.youtube.com/watch?v=rlbzunAvSLo
15:23 adam789654123 xorly's robomaid! https://www.youtube.com/watch?v=7rJvQR36Rak
15:24 xorly oh no, I was just impressed by that quick toolchange on International Engineering Fair
15:24 adam789654123 we were talking about that design not to long ago
15:24 adam789654123 for arms
15:24 adam789654123 to control a device
15:25 adam789654123 the previous one
15:26 xorly deltas are pretty cool with precission and speed
15:26 adam789654123 thats right
15:27 adam789654123 forgot what they were called
15:28 adam789654123 https://www.youtube.com/watch?v=4aRmipbzUDQ
15:28 adam789654123 you gotta get me the name of that track
15:29 adam789654123 thats very stable
15:29 xorly aa, my 1st video, Rammstein - Morgenstern
15:29 adam789654123 wonder what something like that costs?
15:29 adam789654123 cool
15:29 adam789654123 i love industrial music in other languages
15:29 adam789654123 espeially if it sounds Germanic
15:29 adam789654123 dont ask me why
15:30 adam789654123 i dont know
15:30 adam789654123 what language is it?
15:30 xorly that chinook cost me about 75USD, Rammstein is German band
15:31 adam789654123 ok
15:31 adam789654123 thats not bad
15:31 adam789654123 i know someone who would love one of them
15:31 adam789654123 looks like it works really goot
15:31 adam789654123 good
15:31 adam789654123 is it still in one piece?
15:31 adam789654123 how are they to land?
15:33 adam789654123 http://www.amazon.com/Fuselage-9072-Chinook-RC-Helicopter/dp/B0052W2EMI/ref=sr_1_1?ie=UTF8&qid=1404245664&sr=8-1&keywords=Chinook+9072
15:33 adam789654123 bs
15:33 adam789654123 fricken 300 dollars
15:34 adam789654123 that looks like an awsome chopper for 75bucks
15:34 adam789654123 i would buy one of them if i could find it at that price
15:34 adam789654123 for a gift
15:34 xorly it is still working, but now in box on wardrobe due to be too boring. It is still just toy with coaxil propellers
15:34 adam789654123 sure
15:34 xorly It is kind of lazy
15:34 adam789654123 yeah
15:35 adam789654123 well, the agressive ones break so easily
15:36 adam789654123 http://www.hobbytron.com/9072Chinook3CHElectricRTFRCHelicopter.html#
15:36 xorly you can get living room version quite cheap http://www.ebay.com/itm/Syma-S026G-3-5CH-Mini-Micro-Chinook-R-C-Radio-Remote-Control-Helicopter-GYRO-RTF-/301205898523
15:36 adam789654123 maybe for a gift, ill start out with that one
15:37 adam789654123 i mean, its kind of a novelty thing
15:37 adam789654123 but its still cool nonetheless
15:40 GargantuaSauce get a micro quad
15:41 GargantuaSauce hubsan x4 or the like
15:41 GargantuaSauce theyre like 30-50
15:41 GargantuaSauce and are awesome
15:42 xorly yes, quads are cool and cheap nowadays
15:43 adam789654123 micro quad
15:43 adam789654123 ill see what i see
15:46 adam789654123 nothing jumped out at me
15:46 adam789654123 but ill take a note of it
15:47 adam789654123 and when im ready, ill look into it
16:39 MrCurious only takes once
16:49 deshipu IK for the legs done!
16:49 deshipu tomorrow servo trimming and exact measurements
17:21 xorly I'd like to group constants in C, eg I could access them as NUMBERS.ONE, NUMBERS.TWO and so on... is it possible?
17:49 ShH pats MrCur
17:49 GuShH there there
17:50 GuShH maybe if drugs are allowed on the next world cup you'll win.
17:50 GuShH I watched 2 minutes of the match, your guys looked high.
17:50 GuShH it looked like a bunch of pot heads kicking a ball around and tripping against each other.
17:51 GuShH but clearly you were playing clean
17:51 Tom_itx haha i figured out why my webpage doesn't work. This morning Microsoft served a federal court order and seized 22 domains because they claimed that some of the subdomains have been abused by creators of malware.
17:51 Tom_itx no-ip.biz
17:53 Tom_itx http://tom-itx.ddns01.com:81/~webpage/index.php
17:53 Tom_itx so i moved yet again
17:53 Skwint as someone who isn't subject to federal law, on account of not being from the US, that is ... interesting ...
17:54 Skwint xorly - you mean an enum?
17:54 Skwint enum NUMBERS { ONE, TWO, THREE };
17:55 Skwint ah, but that puts one, two, three in the global namespace
17:55 Skwint namespace NUMBERS { const int ONE = 1; const int TWO = 2; }
17:55 xorly yes, that is the problem
17:55 Skwint NUMBERS::ONE
17:55 xorly in C ?
17:55 Skwint well, strictly that is C++
17:55 Skwint are you allergic?
17:56 xorly writing C program for microcontroller...
17:56 Skwint well, the microcontroller doesn't care, so it's a question of whether your compiler understands namespaces
17:57 xorly Iam using avr-gcc
17:57 Skwint which is annoyingly bad at some things, but does support some C++ I think - worth a shot?
17:57 GuShH MrCurious: that di maria guy is nuts, did you watch that?
17:58 xorly Skwint: what is bad about avr-gcc?
17:58 Skwint struct NUMBERS { static int ONE; }; int NUMBERS::ONE(1); ?
17:58 Skwint it is non compliant with the standard in a number of ways
17:58 Skwint but try namespaces, it may well work
17:58 xorly ok
17:58 xorly which compiler do you prefer?
17:58 Skwint for AVR? I can't remember - it's been a while
17:58 Skwint my job is Java now and it makes me want to cry
17:59 xorly not just for avr, C compiler globally
17:59 xorly :D
17:59 Skwint I like visual studio as a C++ IDE ... I have yet to encounter a problem with its default compiler that is serious enough to make to change it
18:03 Skwint "India's Rocket Mission Cheaper Than The Movie Gravity
18:03 Skwint " <- headling makes me smile
18:25 robotustra MrCurious: what about that? http://postimg.org/image/6hmpnhjq1/full/
18:26 robotustra my own design
20:16 MrCurious interesting
20:19 robotustra no rails
20:36 robotustra but the only thing is needed is to program reverse kinematic of this bot
21:00 MrCurious Belgium! Belgium Man!