Great Create

…555 timer “Ball Whacker”

October 10, 2011
Thumbnail image for …555 timer “Ball Whacker”

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 […]

Share
Read the full article →

…quite possible the most complex thing I’ve ever built.

August 24, 2011
Thumbnail image for …quite possible the most complex thing I’ve ever built.

As part of the “Great Create” I was challenged by my buddies at Make magazine to complete a set of projects only using parts from Radio Shack. For my first project they tasked me with reproducing the rather excellent 555-timer “Whack-a-Mole” game created by Jim Chen. This one was tough… oh yes… very tough. Eventually […]

Share
Read the full article →