
captor03
I put the letter H in hack!
Here is the Omnibot I've been working on for the past couple of months.
Both arms, the left wrist, and the left hand have servos in them.
The battery tray in the front has a servo so it will open automatically.
Obviously the head has a servo for the camera to follow objects. If you see the picture of the head, you'll notice I put a bearing in the back so the head can move better with less wobble.
I mounted the EZ electronic board on the door. The door has hinges on it so it can open, and close.
I have a ping sensor in the middle of the front chest area Ill say, and one on the bottom right side. The robot still gets hooked on things with the working hand, and I'm wondering if I need another ping sensor on the bottom left side.
An IR sensor is on the way.
I intend to get a MP3 Trigger, and a sound card for it.
I haven't tried to write script for it. I never do it, and a friend is going to help me.
The motors work of an H bridge.
I'm going to try to post pictures of it. Anyone who wants to give me some input-feel free.
I didn't take any pictures of the arms, and I wish I did! I struggled with them. Later I'll see if I can get some for you.
What I did was mount the servos in the blocks that hold up the arms, but the round servo arm didn't reach the arm itself to work it. so I put a servo wheel on the servo, then built a spacer so it will reach the inside of the arm, and hot glued the spacer to the arm, and the other side of the spacer to the servo wheel making up the distance. Also I drilled out 4 holes in the servo wheel, that go through the spacer, to the inside of the arm, and added screws with nuts for strength. I also drilled out a hole in the inside center of the arm so I can take the screw out of the servo. This way the whole arm pops out from the outside.
One thing I figured out is when putting the arm back together, I didn't put the screws on the cover that we would consider to be our bicep. There are three screws that hold that cover on from the back. I had to take the arms apart so many times, I finally figured out if I use hot glue then I could access the inside of the arm, and get to the screw that fasten the arm to the servo. I hope I explained that correctly. So later I'll pull off a cover, and get you a picture of it.
Thanks,
Den
I thought I seen a picture of that mech warrior on one of the forums-nice!
Den
Thats heavy duty, no slop there!
Den
I mostly design my own gear boxes for many reasons,arm design can lift over 12000 oz,and current very low,working the math for torque is easy ,plus the inside will have it all aluminium,one reason strength,another easy to mount and remove boards or servo's
So it may give you some good ideas ,like inside the arms it will have aluminium plates
the track design is very heavy duty over 140 lb load it can carry
when you use more torque on your motors tthen needed it use much less current,plus all torque is measure at stall torque,and you need to add the length of the arm.torque is ounce per inc
so 144oz/inc and using a 12 inch arm is 12 oz and 24 inch arm with most robots have is .6oz lift and operating torque 75 % less
my omnibot 2000 project
his nickname is 6 millon dollar robot,and was not named beacause of the cost
BUT looking at your project it does look really good
I HAVE a great design for elbows with be putting up soon only so many projects
might have it too low,onther item if and material like foam or sofa or cloth it wont pick up
so be good to add IR sensor,i made a test bench to tester sensors and put the data up soon
second you need a left and right sensor on the front too,best is to have 4 to forward and 2 at a angle fot detecting and measure room distance for navigation mapping
Your Omnibot is nice, but the other stuff you spoke about is over my head! I'll be giving that post you sent me a closer look.
Thanks for the advice on the sensors!
Thanks,
Den
ON sensors one type is good for certain materials and another type is good for certain materials
and since there are different types of materials you need both,good place is on top of the sonar
ON IR sensors is also good for carpet and cliff detection,like stairs in a house.
For a beginner you seem good so far.
besides beening the best on all types of sensors ,i am electronic engineer
SO my info is always free to anyone
If you have a chance drop me an email at qkstrik@cox.net
Tks,
Den