…555 timer “Ball Whacker”

by Stephen Hobley on October 10, 2011

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As another Radio Shack “Great Create” challenge I put together this fun project. A 555 timer and simple optical feedback loop creates a simple cybernetic control system.

The photocell in the tip of the arm responds to the light pattern falling across it – this in turn controls the position of the arm. Resulting in some amusing, and very human-like behaviour.

Check out the project details on the MAKE: Projects page:
http://makeprojects.com/Project/555-Timer-Ball-Whacker/1061/1

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{ 1 comment… read it below or add one }

Christian Deaton November 7, 2013 at 12:53 pm

Hi,

I am trying to get the parts list… but would not show on the website… I need to know the model and part number for the servo motor and what diode did you use?

Thanks,

Christian

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