Fill a small glass or cut-down plastic cup with soapy
water or soapy bubble water from a toy/hobby
store.
Connect the battery
Press button B to test. Stop with A again.
If the arm misses the airstream or cup, stop the
machine, lift off the arm from the servo, adjust it,
and press it back into place.
Do not force the arm to move and do not block the
movement.
Disconnect the battery when finished.
Bubble up!
