Rough drawing of my future Bot project.

SN96

Hello guys,
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I was designing this low profile robot and it is still in the early stages. I still need to make mounting spots for servos, and I also need to create an ankle, as well as a foot to go with this thing.
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I just thought some of you might want to take a look at what I want to do in the future. It's going to be a very long while before I could build this bot since kids in daycare is costing me a fortune!
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Here is the pic:



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Mike

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Formally RoboROOKIE.

Kevin Wood

It looks like it would make a neat hopping robot. It has kind of a kangaroo profile.

LoopyByteloose

Softer materials are great for mechanica prototypes.
Plastic is nice, but it melts in a saw.

For low cost, Find a laser cutter and use thin veneer plywood.

Or, just buy a saber saw and it reasonably large.
Cut everything is pairs to get exact duplicates.

There have been posting of some really neat plywood and masonite robots.
They may not last as long as metal, but they certainly allow you to present the whole concept and resolve flaws.

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"When all think alike, no one is thinking very much.' - Walter Lippmann (1889-1974)

······································································ Warm regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

StarMan

Check your local plastics supply houses for a "Bargain Bin".· There is usually a plethora of materials to choose from at real good prices.··An inexpensive·handheld coping saw can cut those shapes out of most plastics.· If you use clear acrylic, you can light them up with LEDs!

Keep us posted.



Chris I.

SN96

Hello Kramer,
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I wish I had a scroll saw or a laser cuter but I have neither. I am going to have to be careful in my design and make sure it is going to work before sending it in to a metal shop. I am trying to keep it simple but the joints are proving to be very challenging to me. To keep things simple, I am going to have limited degrees of freedom and use the concept used on the toddler and the mini penguin that Parallax is using. My bot is going to use the ankle as the primary means of walking from one foot to the other.
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I have revised one piece of my bot's leg to accept two standard size servos. The mounting holes were created from a data sheet that had all the Hi Tec servo dimensions to ensure a perfect fit.
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Here is another updated picture of one of the two half’s of the upper leg part. Picture two of these parts mounted together using standoffs and you can imagine what the final assembly of this section of the leg is going to be.

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Mike

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Formally RoboROOKIE.

Jon Williams

That's a neat looking part. Some companies will do laser cutting of plastic for a reasonable rate if you provide a compatible drawing. I think Lynxmotion and Pololu both offer this service.

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Jon Williams
Applications Engineer, Parallax