Wishing Well Mail Sensor
by madsci1016, published
This is a small latch that triggers a photo interrupter when a card is dropped through the slot of a wishing well. Itâ€™s meant to be installed on the underside of a slot. When something goes by, it pushed the arm into the beam of a small photo interrupter. More details about the Electronic Wishing Well this was made for: http://www.billporter.info/?p=1510
Print out arm and base. Use a piece of a paper clip to hold arm to base. Bend loops on either end to secure paperclip to base.
This is what I designed this for: http://www.billporter.info/?p=1510