How to Make a Door Alarm
Gather your materials.. Attach the plywood to the wall next to your door.. Cut three strands of insulated wire.
Steps
Gather your materials.
Gather your materials.
Attach the plywood to the wall next to your door.
Attach the plywood to the wall next to your door.
Cut three strands of insulated wire.
Cut three strands of insulated wire.
Strip the ends of each strand.
Strip the ends of each strand.
Tape the battery and buzzer onto your wooden board.
Tape the battery and buzzer onto your wooden board.
Wrap the stripped wire around the ends of the clothespin.
Wrap the stripped wire around the ends of the clothespin.
Connect the bottom-pin wire to the battery.
Connect the bottom-pin wire to the battery.
Connect one non-battery wire to the buzzer.
Connect one non-battery wire to the buzzer.
Break the circuit with a piece of cardboard.
Break the circuit with a piece of cardboard.
Connect the remaining wires.
Connect the remaining wires.
Test the switch by completing the circuit.
Test the switch by completing the circuit.
Check connections and the battery if the buzzer doesn't activate.
Check connections and the battery if the buzzer doesn't activate.
Glue the clothespin to the board.
Glue the clothespin to the board.
Manage excess wires with tape and hang the board.
Manage excess wires with tape and hang the board.
Attach the string to the piece of cardboard in the clothespin.
Attach the string to the piece of cardboard in the clothespin.
Fasten the other end of the string to your door.
Fasten the other end of the string to your door.
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