Hi, I'm working on a robotic hand for my science fair project. The idea is that if their are 15 joints on the human hand (3 on each finger, this is counting the one at the knuckle.) the amount that your fingers can flex naturally without force against them is 180 degrees, having less joints activated (in the code) would reduce the flexibility of the fingers themselves. For example, if the joint at the knuckle is deactivated (this would all be done software side) then only the middle and tip joints would be able to move at once. I would use a LilyPad Arduino USB as this particular Arduino would fit in your palm (at 2" in diameter this is plenty of space to be attached to the center of the hand) and several servos would power the joints. Deactivating these servos would deactivate a joint or two, depending on how much is powered.
Would there be any kind of splitter available for a servo? So that several joints could be hooked up to one servo, reducing the cost while still maintaining accuracy?
I'm thinking this over as I type and the programming part would not be needed as the servos would be connected by wire to power the joint and all I really need is an on/off function and pulling the plug would serve the purpose I need.
If this isn't clear please inform me. I find that when I type on forums my vocabulary leaves me. Perhaps it's some form of stage fright. I don't know.