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Build a large dancing robot. This was supposed to be a walking robot, but it more kinda beebopped around.

video on last step.


 
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Step 1: Build a Prototype

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First, The _Prototype_:

Before you make a large, high power robot, it's good to make a smaller scale prototype. I made a simple walking robot using

= Brains: PIC16f877A,
= Actuators: two small geared pager motors (http://www.solarbotics.com/products/gm10/)
= Actuator Control: an L293 H-bridge,
= Body: I used one of those thin metal things that cover your unused card slots at the back of your PC.
= Fasteners: Everything was kept together by double sided tape and twist ties and some small screws from an old computer case.

Info on how to use the PIC and the L293 h bridge motor controller are covered in my previous instructables:
PIC: http://www.instructables.com/id/Intro-to-PIC-Microcontrollers/
H-Bridge: http://www.instructables.com/id/EHL7TR9A61ETVPKL4D/

--Notes--:
you can download the code I used (LWalker.bas).
The gears on the motors are important because they add torque (needed for a walking robot since it has lift its own weight).

http://www.youtube.com/watch?v=VyqcOvQ5BhQ


Nicapizza says: Apr 2, 2012. 2:50 PM
Hey, i know its been a long time scence this was posted, but what is the song? it sounds a lot like arctic monkeys and i really like it.
vicky666 says: Nov 23, 2010. 10:06 AM
By the way i think this robot walks and it does not dance and i think you should change the name to 'large walking robot' as many people thinking it's a dancing robot, and get confused like i did!!!!!!!!!!!!!!1
Jumpin Jehosaphat in reply to vicky666May 11, 2011. 6:24 AM
calm down!!!!!!!!!!!
andross52 says: Jun 12, 2010. 2:05 PM
Did anyone else notice the url?
crak-a-bottle in reply to andross52Apr 27, 2011. 3:49 AM
me! Giggles....
waffleman says: Dec 19, 2009. 1:05 PM
im sorry but i dont really see how one can be very excited about this? it just shakes around a bit, nothing special........
leevonk (author) in reply to wafflemanDec 19, 2009. 2:44 PM
I agree with the second part of your statement but not the first and third. It is in fact quite special compared to most things that 'just shake around a bit'    :)
robo3 says: Aug 22, 2009. 7:43 PM
nice build!!!!!!!!!!!!!
erobot says: Jul 7, 2009. 10:44 PM
u rocked yar..well i'm interested to design a dancing robo..please help me ofcourse, this protocol will help me up!! thanks and regards eRobot madhu@bvrit.ac.in
vishnu_ad1993 says: Apr 16, 2009. 8:53 AM
nice one i love bro!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Unit042 says: Nov 30, 2008. 1:52 PM
Nice stuff here! I've been thinking about making a walker myself (not quite as big, but still). Looking at your diagram, the 45 degree tilted up end is supposed to be forward, the horizontal motor end is the butt.
The front motor is activated in any given direction, rapidly followed by the rear legs, rotating in the opposite direction. After that, both motors reverse, starting with the front motor.

see:
solarbotics.net
leevonk (author) in reply to Unit042Nov 30, 2008. 3:53 PM
yeah, I know, but I tried it that way and ran into a problem that is specific to larger robots, the metal conduit I was using for the legs couldn't hold up the robot body when the legs were at 45 degree angles, the metal bent and the whole body sagged, so I had to bend them more inwards. Also, when I made a smaller version (first video shown in the instructions) it actually ended up moving in the opositie direction with the 45 degree angle legs at the front. given all of that and the fact that I was trying to build the large version in one long 24 hour session and you see the not so great result.
Unit042 in reply to leevonkDec 3, 2008. 5:53 PM
Mmmm... bummer. Back to wheels! :D
crankola says: Nov 14, 2008. 10:09 AM
Heyyyy- I remember this! in fact im standing in the background in a red jumpsuit with the rest of COBRA, Idiotarod organizers. I really liked the robot and I thought it was a great interpretation of the "contest". Just sorry you didnt win anything... :( But keep doing this and maybe they will have a "Best animatronic dancer", or best "jiggy terminator" award!!
leevonk (author) in reply to crankolaNov 30, 2008. 3:57 PM
not sure if I'll have time to build another one for this years idiotarod, and I lent out my motors for another project, so we'll see
elixeo says: Jan 27, 2008. 5:13 PM
Great instructable. Liked the Video but I have to admit I found the girl a bit irritating.
leevonk (author) in reply to elixeoJan 27, 2008. 5:19 PM
she's a really good friend of mine, she's a lot of fun, I find you irritating.
leevonk (author) in reply to leevonkJan 27, 2008. 5:50 PM
by the way, how can you like the video while finding her irritating, she's in all but 5 seconds of it! I think that you just like her so much that your brain is confused
Mario2007 in reply to leevonkJan 27, 2008. 7:48 PM
The girl in the blue helmet is cute ! Around 59 seconds into the second video I forgot there was even a robot there . Shes hot !
wiets99 in reply to Mario2007Oct 27, 2008. 4:19 AM
Hi, guys, The robot works! But perhaps the body seems so weigh to move. That's right, the girl is irritating. I can hardly focused on the robot while the girl appears!!!
Clayton H. says: Apr 28, 2008. 3:56 PM
So this is really just a giant Vibrobot?
theRIAA says: Jan 27, 2008. 6:41 PM
need more POWER!
Mario2007 in reply to theRIAAJan 27, 2008. 7:49 PM
No sir , what this needs is more cowbell.....
mwwdesign in reply to Mario2007Jan 30, 2008. 5:26 AM
I GOTTA have more cowbell.
SWV1787 says: Jan 28, 2008. 9:28 AM
Honestly the girl in the blue hard-hat was more entertaining than the large dancing robot but it was a cool idea
leevonk (author) in reply to SWV1787Jan 28, 2008. 10:38 AM
I agree, the robot needs more spunk, I'm working on it, but that's as good as I could get it at the time. I'm going to try putting all four batteries on one motor to see if that makes a difference, also I have to buy some more emt conduit to bend into some new front legs, i'll put an update video here if it any of that works.
FrenchCrawler says: Jan 28, 2008. 3:15 AM
Nice! Especially loved the warning 54 seconds into the movie :P
GorillazMiko says: Jan 27, 2008. 4:59 PM
...Awesome! Looks really hard to make, but it's awesome!
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