User:1sfoerster/enes100/ComboLockPick

Combo Lock Project

Finding Solenoid
The goal was to find a solenoid strong enough to pull the combination lock to see if it is open.

We received two dollar bill changers along with the purchase of an old vending machine. The coin magazine or coin trays were missing so they were unusable. We took one apart and found a great relay in it.

They run from $25 to $30.

The next step was to find a device that could supply .5 (resting) to 5 amps of 60Hz 120 volt power. This was found for $30 at sparkfun.

Hooked it up to 24 volts DC and it had enough power to smash my finger. So it is plenty strong enough.