Transforming Wheel Robot 2.0: Build your own

The new version of my transforming wheel robot is way easier to assemble, and all the files are up on thingiverse so you can build your own. 

All CAD Files Here: http://www.thingiverse.com/thing:6959...

3mm Pegs: http://www.amazon.com/Stainless-Steel...

50:1 Metal gearmotors with encoders: https://www.pololu.com/product/1444

GM3 Gearmotors: https://solarbotics.com/product/gm3/

Limit switches: https://www.sparkfun.com/products/9414

Elastic cording: http://www.amazon.com/Darice-1921-377...

Motor shield: https://www.adafruit.com/products/1438


This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/transforming-wheel-robot-2-0-build-your-own

I already loved version 1.0.

I already loved version 1.0. This is even better! Thanks for sharing!

I thought 1.0 was impossible to improve on until now.

You should know I really liked 1.0 and now I have a knew favorite. I thought about it so many times about how you could or I could improve on 1.0 and I thought the easiest way to do that would be to build a torque sensor and the robot shapshift on it’s own. Now I see knew possiblites and I can only imagine 3.0. Good Luck.

Wow!

Thanks! Added to my to do print list!

Maybe it’s possible to make the legs elastic like in the BaasWheel, to add some shock absorbtion:)

Thank you!

I just got a sensor for amperage draw- inteligent control might be next

OMG intelligent control might be is next.

Dear: Alta Powder Dog

Intelligent control is deffinetly next because it doesn’t seem like there could be more to improve on. I wish you good luck and here’s a suggestion. I’ve never heard of a mechanical torque sensor but it is something worth looking into. Good luck and bye!

From: Noah

It’s very nice, but I can’t
It’s very nice, but I can’t help wondering why would you ever want the wheels to be in the contracted form? Why not just make static “wegs” (wheel-legs) and use those?

Good question!

There is a reason that whegs aren’t used super often despite their good obstacle clearance.  They are less efficient, can actually be slower over smooth surfaces, create a very bouncy ride, and, most importantly, can’t be used with encoders to provide movement and position information.  

Indoors round wheels are almost always the way to go.   But outside GPS data can (kinda…) compensate for the lack of movement information from encoders, you have a big open space so a bigger spiky robot doesn’t get in the way, and the ground usually absorbs a lot of the impact and makes the ride smoother despite the whegs (snow/sand/grass is soft).

This does well indoors as well as outside. 

also…

also this is cooler :P 

Makes sense, thanks.

Makes sense, thanks.