Lego Mechanical Useless Machine

Instructions: https://reb.li/m/190294

I was inspired by the great channel @Xeonbrick who makes mechanical lego contraptions,
They’re Useless Machine:    • Lego Mechanical Useless Machine  

#legotechnic Useless Machine / Useless Box, its entirety mechanical and powered by 2 lego Pull Back motors

Music: Terraria town day & Terraria town night