In this instructable i will show you how to make a pocket sized device that beeps rapidly, mde out of a smoke detector.
Step 1: Step 1: What You Need
You will need:
A smoke detector
A battery holder
A 9 volt battery and adaptor
Soldering iron and solder
Wire cutters/ strippers
Hot glue gun and glue
Step 2: Step 2: Start
Start by taking apart the somke detector and removing the circuit.
Step 3: Step 3: Cut
Now cut away all of the area and the aluminum casing in the plastic, keep the wires and the IC.
Step 4: Step 4: Solder
Now solder a wire to the tall wire, solder one switch lead to that, and solder a wire from the IC to the other switch post. Don't ask me how i figured this out, i just stumbled upon it. Now desolder the 9 volt clips, remember wich is wich. Solder the corresponding wires from the 9 volt adaptor.
Hint: ( The connectors will be opposite of the 9 volt polarity )
Step 5: Step 5: Prepare the Container
Now place the circuit in the box, cut a hole where the "speaker" will be. Also cut a hole for the switch.
Step 6: Step 6: Glue
Now glue the switch in place, then plug in the 9 vot battery.
Step 7: Video
Congrats! Your done! Here is a video of the Beeper in action, the sound is a bit distorted, its a lot higher and louder.
Step 8: Final Note
Thank you for viewing my instructable. Please leave any comments, questions or suggestions, and please rate. Thanks!