You might also want to use a timer.
It's hard to balance
the thimio didn't work exactly so, we mend pipe cleaner many times.
i fixed color of tape black to white
Paper cups make almost no noise.
drum bot is funny. it rolls drum slowly .
We are short on parts. Even after connecting the wires, no sound is produced.
spinning around
Let's catch the orange on the paddle.
Keeping the ball out of the goal!