A simple mouse made with fun fur and an empty film canister. I made this mouse for the May workshop here at the Science Museum. The mouse was pretty simple to construct -- just some fun fur, an empty film canister, and a gear connected right to the motor -- the hard part was making it move convincingly. I wanted it to twitch, but just using the MOTOR_ONFOR block turned the motor on for too long. So my friend Natalie suggested I try programming it using the text language. So I made two blocks. One to make it quiver (shake back and forth) Making the mouse move - part one One to make it twitch (or move in short, random bursts): Making the mouse move - part two Oh, and "mwait" measures the wait time in milliseconds. Once I made these blocks in the text language, I could use them in a program that made the mouse start moving when it got dark: