Wireless doorbell buzzer

thingiverse

This hack replaces Jetty's buzzer support with a household wireless doorbell system, triggering receivers to chime throughout the house once printing is completed. The author has two receivers in different locations linked to their MakerBot, and different sounds are produced by the bot versus the actual doorbell for clarity. Installation depends on the chosen doorbell system; the transmitter runs on 3V, so a 3.3V power output from an Arduino Mega was used for power. The makerbot's buzzer pin provides 5V, which is connected to the transmitter switch through a 2N2222 transistor and a 2Kohm resistor; the transmitter switch remains in place for testing convenience.