Circuit and motor for moving an arm

[Tina Keeler]

I want my full size nutcracker to be able to move his arm which is made from a drain pipe and would like to know what sort of motor and circuit I will need for to move a 60cm piece of drain pipe.

 

[Pommie]

Look at servo motors for models. Some of the bigger ones can produce some impressive torque. Not sure if "nut cracking" force is available.

Mike.

 

[ClydeCrashKop]

A windshield wiper mechanism would do it and even stop with the arm up between nuts.

https://d2t1xqejof9utc.cloudfront.net/screenshots/pics/0dca3e19c5935b52adc0c0ae63373efc/large.gif

 

[shortbus=]

A windshield wiper mechanism would do it and even stop with the arm up between nuts.

There's a joke there I won't go to.

 

[gophert]

I'm trying to imagine how this will work out.
Are you thinking of arms swinging like a marching motion, or a drummer movement or a Heil Hitler movement or ...?

I don't see a desirable end product with some of these scenarios. Either by complexity or, if you elect the simplest one, it won't be a popular effect.