To celebrate the 50th anniversary of the lunar landing I made a fun back pack simulator to land a model lunar lander on the moon. The electrical circuit in the lander buzzed and a light turned on when the lander tilted and if you took too long landing (using up all the fuel!) then you got a high voltage electric shock! Ouch!
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https://www.youtube.com/watch?v=6VHWSQ_i3lk