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Arduino controlled robotic hand

Combust — Thu, 20/05/2010 - 4:32pm

One of my ongoing projects (I started it when I was about 15 years old with an aluminium one) has been a robot hand but only recently have I been able to easily make something that will control multiple hobby servos. Hooray Arduinos!

Seen to the right with attached sword :) Note also the wrist joint swivels, make by forcing metal around a pipe and bolting stays onto it.

Robot Hand with Sword

I do not know exactly what has make me want to create something like this but I do believe the movie Terminator and the anime series Bubblegum Crisis helped:

Bubblegum Crisis Terminator

When I reliased it was now possible to make something to control 12+ servos I started building… in cardboard.

Cardboard Hand

In this image you can see the finger linkage between the first segment and the third segment:

Hand Hand Hand Hand

After moving to ABS plastic this is the result:

Hand

Unfortunatly the linkage is slightly off due to user error so the tip segment does not have the range of movement I would like but as its not hooked up as yet it can wait. This image shows the movement of the twin linkage of the first knuckle. Note the ‘Polymorph for the knuckle (uni-joint):

Hand Hand

And a video of the early knuckle movement: http://www.youtube.com/watch?v=IDY7FiV8_vU

Update 28/5/10:

Hand Hand Hand Hand

Below you can see how the linkages and spacer/brackets work (Polymorph rocks):

Hand

Update 31/5/10:

Hand Hand

http://www.youtube.com/watch?v=qCqRqPslyoY

Update 8/6/10:

Hand Hand

Update 25/6/10:

Hand

Here is the long overdue update for the Robot World Live event that was held on the 17/8/10:

Here is our post about the event. Here is Bobby Cerini’s blog post and this is the ABC News segment.

In short it was an amazing opportunity and one that I will gladly just at again. And thank you Mal Goldsmith for the amazing photos that follow:

Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand Hand