It was fun to make. I am thinking about using it for a little game with more boxes...
Btw, you've made an interesting book about the mBot Ranger! Unfortunatly, I don't speak Spanish, but your book gave me a few new ideas anyway. I am working on a little book in my own native language (Dutch).
If you would like to see more video's that I made about the mBot and the mBot Ranger, please check out my YouTube channel: