Build mechanism with Legos
This project started as an exploration of the scotch yoke mechanism. The lego scotch yoke mechanism converts the rotational motion of the DC motor into linear (up and down) motion. I wanted to see what I could do with it, and I decided a peek-a-boo toy would be fun. :)
Glue mechanism to box
I hot glued the Lego scotch yoke mechanism to the inside of a medium cardboard box. A mild amount of hot glue can be removed from Legos after disassembly.
Cardstock bunny and grass
I drew Cadburry bunny and grass with a pencil and crayons on cardstock and then cut out the shapes.
The circuit is USB power + sound trigger + split....
... + mp3 player (next) + speaker
... + DC motor