Instructables

Step 8: Inside

Now install the servo and its handle. Attach the the leveler, with a nut and a bolt.
Then secure the spring with a piece of wire.
Paste the tube for the coins in front of the hole and secure it with some pieces of cardboard. Now you can test if everything is going to work.
The next videos will show you how to test it.





 
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If the "stop" point of the motor were slightly further round, you could reduce the delay between hitting the botom of the box and the coin coming out. May require a one way ratchet system to avoid the spring trying to pull the arm back again. Excellent job!