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This project has evolved some , the basic rundown is I'm modding two Omnibots , one a regular the other a larger 2000 model. I will have two ezb kits , rad base idea was thrown out because of so much noise but could go back on the table if the omnibot drivetrain is too weak to pull it.
By jstarne1
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That's not a bad idea.... making body copies.
can make good money at it JOSH i did the same on some of my designs ,not fiberglass copy but other designs i build and sold,super good robot base is the roomba robot,easy to modify ,has much much torque and sold so far 25,with my many changes,this is a TURTLEBOT robot using IROBOT create selling for $500,made a design like but better and at half the price here is a link to open design and software turtlebot robot another design i madeis neato LIDAR SENSOR with control board with usb input might be a good add on for your robot for navigation,same as the high price LIDAR going for $1200 ,but a lot lot less,spec almost the same,
Yea I figure if people are willing to spend 2 or 3 hundred on a robot they got to tear up and clean and make stronger in some cases why not make a mold of the body shell once I'm done and pop.out some copies , ofcourse they won't look the same on the inside because they would be epoxy or carbon fiber per the buyers choice but it would be cool for Somone to buy a shell with all case mods already made, mounts and positions for servos ect. Like all.the new cust had to Do is start installing the sensors and parts taking tons of guesswork / trial and error time out
@JOSH it might work if price is low for it,way it is now most dont want to pay much money out but worth a try,but think of opening a shop,like i am getting to do online,cost not much to start it and i many items i make to sell one reasonm i buying a all in one lathe and mill ,to sell my hand designs and other parts for JOHNNY FIVE robot plus be good for you to try it too,come up with other fiberglass parts to maker and sell fiberglass is kinda easy to use,takes a lot of work,not to many robots use fiberglass ,so may be good or bad,i think because its more heavy,when i made some stuff from fiberglass using a mold i found it to be much much heavy,compare to other materials,but not to hard to shape it so everything has its good points and bad points
i am looking at vacuum forming plastics ,machine is little costly unless you make you self and able to form most plastics and very easy to use and less messy machine its self is very easy to make
Yeah Josh,
I you want an online store I'd be happy to build that and set it up for you. Integrating a shopping cart etc. I could show you examples if you like.
Samantha
That would be cool Sam , I would look forward to that once this bot is presentable
So looking at servo options I'm thinking of getting a handful of.these polulu 240 oz in servos , use them in tandem for additional vertical torque on the shoulder and left to right pivot we showed pictures of earlier. For 20 each they feel like the best deal. http://www.pololu.com/catalog/product/1057/specs 19.99 each
I'm thinking of buying thick abs to make some parts from but servos come first.
With the tandem servo design I've figured I can get up to 720 oz in torque and maintain 180 degrees of movement and still keep the servos fast-ish , problem with gearing them down is.it also reduces range of motion and speed the limb can move , I want Jarvis to wave and even dance and I don't want him to be the "short bus bot" and get made fun of by buster
I will post a basic drawing of.how this works.
Vacuum forming is really a great way to form the outside skin of Robot bodies, quickly, repeatably, & inexpensively. Then, attach that to a separately built sub structure or reinforce directly with fiberglass or carbon fiber.
lot of info on the internet about using tandem ,not a good choice,they will be fighting each other gears also wear out much faster too,plus double the current ,but guess you have to try see your self if you want to use tandem witch doubles the torque witch is 480 oz from using two 240 oz servo's ,there is a servo saver that helps on fighting and you need a special splitter cable that servocity sells,but still only get 400 oz because of stall torque too many people look at the rated OZ-IN on a servo and forget the specs are for stall torque ,NOT operating torque,stall torque is when the motor lifts the highest rating OZ-IN and stops and cause it to burn up the motor,there is no protection on servo's if holds too long it smokes,i think is 10 seconds or less
on vacuum forming you can use any thickness of plastic up to .5 inch, not just for skin