Here is a video of the finished product:
Tools + Supplies:
Radio Shack Recording Module ($10.99)
Hot Glue Gun
9 Volt Battery
Momentary Switch (Push Button)
Project Box (I used a plastic 16mm film container)
Optional but useful
Third Hand Soldering Station
Step 1: Extend Play Button
Cut two 3ft long pieces of copper wire and strip the ends.
Solder the two wires to the exposed metal terminals of the play button.
Step 2: Cut Off Record Button
Cut off the "record" button. Make sure to leave enough wire on the circuit to be able to attach a new button.
Remove any wire still attached to the button and strip the ends of the wires that are sticking out of the circuit.
Step 3: Solder New Play Button
(Use the button you just cut off in the previous step or use your additional button if you skipped the last step)
Step 4: Solder New Record Button
Solder your additional button to the "record" button wires. You might want to use your copper wire to extend how far the button can reach.
**At this point you are done with the electronic components. Your circuit should look like the second picture.
Step 5: Mount Speaker
Cut out a hole along your mark using an Exacto knife.
Glue the speaker into the hole in the project box. (The box will actually amplify the sound)
Step 6: Waterproof Play Button + Finish Project Box
Glue the "Record" button and the microphone to the outside of the box for easy recording.
Step 7: Installation
Put duct tape on the back of the project box and stick it on the side or back of the water tank.
Remove the cover to the water tank.
Find the lever device that the float is attached to.
Place the "play" button in the crack where the pivot point for the rod that holds the float is.
Play with the positioning of the button so that it is fully pressed when the toilet is flushed.
Once you find the sweet spot, hot glue the button in place.
Place excess wire leading to the play button inside the project box.
Cover the water tank.
Hold down the record button and speak or play music into the microphone.
Flush the toilet for playback.