#robotics Logs

Jun 02 2015

02:31 Mister can someone plz help me out a little bit? i got this gyro and arduino uno and want to read the angle of the gyro somehow, just to see if it works
02:31 Mister http://www.dx.com/p/bigaole-3-ga-3-axis-gyro-unit-w-10cm-cable-for-rc-aircraft-plane-black-267490#.VW1V02f9mmQ
02:32 Mister http://www.arduino.cc/en/Main/ArduinoBoardUno
02:32 Mister i should use processing?
02:32 Mister https://processing.org/
03:01 deshipu sure, why not
03:01 deshipu though I would just simply print the values on the serial
03:03 deshipu hmm, it looks like it outputs pwm
03:03 deshipu that's going to be fun
03:26 Mister fun as in hard fun? xD
03:33 deshipu Mister: I think it's supposed to be connected between the radio receiver and the servos in an RC toy
03:33 deshipu https://www.youtube.com/watch?v=-h6klEmMmQU <-- one of those days the robot is going to hit back
03:39 Mister that's exactly what i'm working on lol
03:41 Mister but mine will be strongest!
03:41 deshipu um...
03:42 deshipu well, good luck
03:45 Mister thank you xD it'll be a little easier when i have tools to make the parts i need from scratch though
03:46 deshipu believe me, parts are the smallest of the problems
04:34 Mister deshipu, problems are relative =) is a problem to me a problem to you too? and is a problem to you a problem to me?
04:36 deshipu well, that video I posted, it's the cutting edge of what has been achieved with two-legged robots at this scale
04:37 deshipu most such robots walk more like cocroaches
04:37 deshipu and fall down from just looking at them
04:43 Mister it's uses the same technology as the supersonic jet fighters.. very old technology now :S it's just that no one thought of using it to balance a pole xD
04:44 Mister it's almost like a knospiracy! it's the only explaination for us not having this earlier
04:44 Mister conspiracy*
04:44 Mister xD
04:44 Mister jet fighters with autopilot and gyrostabilization*
04:47 Mister acctually.. nvm.. it can be very hard if one are manually programming each step but i don't think that is what you showed in the video
04:48 Mister easier to think of when u call it an ECM.. (environmentally controlled machine)
04:54 deshipu it's hard, otherwise asimo would walk much better :)
04:55 deshipu the problem is not balancing a pole -- that's easy
04:56 deshipu the problem is balancing a pole on which you only sometimes have any control and you have to move the control points in advance
05:03 Mister but that's just a simple match equation?just add "speed of servo= (servo speed) + (joystick position)" before you print the values?
05:03 Mister i have only used a little bit of c# and actionscript..
05:05 Mister or "target angle = (gyro angle) + (joystick angle) if servo angle> then target angle, set servo angle +1(acceleration)
05:08 Mister math equation*
08:09 deshipu Mister: it's not that simple
08:09 deshipu Mister: it's a set of non-linear differential equations without a closed-form solution
08:16 veverak deshipu: "import wolframalpha" ? :))))))))
08:18 deshipu veverak: nope, wolfram told me to go away
08:18 veverak that's bad
08:18 veverak :D
08:18 veverak oh god
08:18 veverak how I love USB devices
08:19 veverak dozens of try: catch e.... constructions
08:19 veverak :D
09:31 rue_house deshipu, ah, you must be xkcd :)
15:27 Zepherus Hi all, anyone quite familiar with ROS and Cmake that could help me out on a problem ?
16:30 de-vri-es Zepherus: I'm familliar with both
16:31 de-vri-es your best bet is to just post the problem see if anyone bites
16:31 Zepherus Cheers, but I think I managed to solve it !
16:31 Zepherus or actually
16:31 de-vri-es ah, that also works :p
16:32 Zepherus would you happen to have an old distro of ROS ? (ie Fuerte) ?
16:32 de-vri-es no, using indigo atm
16:34 Zepherus alright thanks
16:34 Zepherus I wanna convert a .vcg (old rviz format) to a .rviz , I think I read somewhere opening it up with an old distro and saving it as .rviz was doable
16:35 Zepherus not that crucial anyway, fixed the big issue I had x)
16:36 de-vri-es ah right
16:36 de-vri-es good to hear :)