Let's Make Robots!

Mighty1

Drags weights across the floor

This is my entry to the Mighty Bot Challenge. It's 6 x 12V motors are driven by two FET servo drivers. These drivers are the same circuitry that drives a RC servo but with heavy duty FET outputs so that they can drive loads in excess of 50A. They allow any DC motor to be driven as a servo.

For instructions on how to make the chassis read this walkthrough.

Since this challenge is about power to weight ratio I haven't added sensors. Because the suspension is not really set up for this challenge you'll see the front and back wheels spinning on the ground a bit with the middle wheels doing a lot of the work as they have more spring tension on them.

ruler__small_.jpg

This photo demonstrates that the tiles are 200mm square. This made measureing out the area easy.

weights__small_.jpg

This is a clear picture of the weights. The weight can be clearly read. Click on the photo for alarger image.

Box_underneath.jpg

This is the underside of the box to demonstrate that there were no wheels or other aids. The weights have left a clear impression on the bottom where it's dragged across the tiles.

Mighty_Volts.jpg

This is the volts reading with the switch off. With no load, the reading is higher than 14.4V but still well under the 18V limit.

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GREAT JOB!!! so 900g and 5kg pulled... %555 efficiency? am i correct? Currently 1st place, nice
Really great work!!!!
Thankyou :-)
is that boozebot in the background?
Part of him, watching Walters progress has made me decide I should get back to BoozeBot, you'll see more of him soon.
good work!!!
by standard messurements thats a ~2 lb robot pulling over ten pounds.. thats insane!
It's like an ant. They have an incredible power to weight ratio.
as is your measure of "standardization" ;-)
Where do you bought those wheels??? I need one's of those... What is the torque of the motors you're using? The Mighty1 looks extremely powerful/strong!!!Well Done!!!