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So I am finally to a point to report some progress on my omnibot hack. I call him BOB. I decided to change his color as there are so many white ones out there. I used a flat black with silver accents.
By bret.tallent
— Last update
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Note how the servo is attached.
Close up of the servo. 208oz/in torque at 6 volts. I used a plastic epoxy and screws.
Im just curious of what the final weight capacity the arms will have.
For example an 8 inch arm will stall at 26 ounces. At least thats how i think that works. :/
and oh yeah I believe that is when arm is horizontal to ground.
Actually it is just a slight modification to what DJ did with his omnibot.
I've finally gotten my bot disassembled and I'm still trying to decide the best way to actuate the arms vs. my skill level. BTW, once I got the arms apart I finally grasped what you were saying in the Robie Sr. thread.
I know you mentioned that DJ made the same kind of arm servo modifications to his Omnibot, but I don't remember ever seeing his Omnibot's arms move. *confused*
No, I'm still in a "parts gathering" stage... went to one of the home improvement stores yesterday and looked for anything that might be useful. Very good prospects in the PVC pipe aisle. I'll have to bring a few of my bot's parts to the store next time to do some fit tests to be sure, but definitely worth the trip!
Arm and Elbow:
The new arm - woohoo!
Cool Claw!
Wrist close up! The support tube is PVC pipe epoxied onto the arm.
The claw... it... calls to me...
And here he is sporting his new claw.
And here is the EZ-B in the cassette tray. I have a cooling fan at the back.
Alan
Sold my complete omni to a guy at work for $80 cause I didn't think I wanted to do one up. After seeing your bot I wish I would of kept him. Super cool.
the difference is the black one writ will twist otherwise the black and yellow one goes for 40 bucks from OWI at hobby lobby, online and ebay. it uses 5 different dc motors with worm gears so it holds position well. anyways just throwing out some ideas so you can get your omnibot reaching andd picking up things !
Ah man, I just got a serial motor controller board from Sparkfun in the mail today. If I had known they had this CLAW, I would've ordered 2 Myself!!!:(
Oh well, pulling out the Credit Card!
Just a thought but remember that guy is parting out robots , you could retrofit easily the 2000 arms which are bigger and more articulate , just move over the shoulder mounts you already fanned. Sorta like this....
Ps, the eBay robot guy sells domes for 30
Click To Watch Video
I think you mentioned in another thread that you were thinking of stopping work on B.O.B. I really hope you decide to finish him. It's really a great looking and working bot!
Very Coooooolllllllllll
Did you change the type of servo in his wrist? or was it just a faulty one originally? You get some duds with those 9gm servos sometimes. I think I will go with mini 2.5kg digital mg's same as the ones I use in my 450 heli.
Rich
Rich
bret.tallent I set my increment speed to 1/2 of the minimum and maximum that way it scans left, center, right J.W.
Your bot looks great! You are doing some really nice work there!
black looks great on robots!
I agree jstarne1 - Iron Man look, definitely!
R2D2 IRON MAN PAINT JOB
@jstarne1 - good idea
I do have some EL-wire running through some of the lines that will be lit up when he is on, but I think some detail work might be a nice finished product.
I just recieved 2 of those SparkFun Claws w/o servos...
Seems an Odd size...What type/size servo did You end up using?
Thanx:)
Handsome boy!
Charging port:
@RR333 - can't wait to see pics! I know what you mean about taking time, I have been working on Bob since Thanksgiving!
And here is BOB all buttoned up and ready to go:
Next is setting up the joystick gamepad control. After I get that figured out and working right then I will post a video of BOB chasing around my dog Peanut. This should be BOB's debut....
Thank you all on this site for your help and encouragement. But even as I finish BOB I am already working on my next bot.
hahahaha they're all sideways. Darn cameraphone
By the way, is that fan enough to cool that controller or should I get some kind of heat sink as well? I also noticed that DJ has taken ALL motor controllers off his website.
In the video, was B.O.B. attempting to dance "the robot" at one point? I noticed his claw-arm in a valiant attempt of it at one point. Also, I couldn't help but notice the lack of dog chasing...
Again, great to see how far B.O.B. has come!
I think I saw a post on this a while ago...the thread discussed hooking up a PS3 controller wired with 3rd party drivers. Just found a thread describing how to do it BT as well..... Looked pretty cumbersome....I actually think buying a wireless one off ebay might be easier
v/r
Kevin
Then any PC sound comes out of BOB.
If you turn off the wireless speaker then sound comes from your regular speakers again.
Would work for B9 also.
I just paid for a 24 inch B9 from ebay.
Hope to get it soon and start modding him.
I have 2 old RAD robots, but I may use something else to drive him.
I need to finish my humanoid first.
He has a Robosapien V2 upper body with my robotic arms I had on my C3PO.
I may get back to C3PO sometime, but I want to get this robot from a story I am writing built first.
The arms have 7 servos each and the head will have 2 servos and the camera.
I am rebuilding the legs from the Robosapien to see if I can make it walk more human like and be a bit taller. I wanted to use the hands too, but they are too big for my robot.
The V2 hands have fingers as long as mine.
I have been following your Bob build and your B9. You are doing great on both robots.
I have 2 RAD robots to use for parts, but I may use something else for B9.
If I could find a good head for him I would build a much bigger B9. I have two 1/6 scale tanks.
One is in perfect shape, the other wont drive reverse anymore. Could rebuild it into a much larger B9 or a Johnny 5 robot. It couldn't handle a full scale B9. I do have wheelchair motors for large robot fun.
Yes, a franken-bot of sorts. I started a thread for mine so I wont take over Bob's build.
Pics soon.