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Discussion Starter · #1 ·
Hey there across the pond. I'm from Australia.
Most people down here don't celebrate Halloween, but we sure do at our house.
Here is a video of my monster in a box. it is controlled with an Arduino. Has four pneumatic cylinders for the movement, a hacked MP3 player so it can be controlled by the Arduino, and a set of computer speakers with a subwoofer for sound.





 

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Discussion Starter · #7 ·
In the video the pneumatics are almost silent, or are drowned out by the sound of the box moving. How did you get it so quiet?
I slowed the cylinders down with flow control valves, I also put nylon "feet" on the cylinders to quieten the impact with the ground and I took apart all the cylinders and put rubber washers that I cut from an old tyre tube at each end of the cylinders.
I also spent quite a bit of time "timing" the cylinders with the soundtrack to help hide it.
 
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