For this projec you will need:
An old 9v battery,
A new 9v battery,
Two pushbuttons (mine from an old DVD player),
A 3mm red LED (mine from an old kids toy),
A 270 ohm resistor (mine from the same place as the LED),
A key switch (with the key, of course), (mine from an old telephone),
A speaker plug (it's origin it's pretty self- explanatory),
Wire (from somewere),
Hot glue gun,
Hot glue sticks,
Paint (mine is yellow, and looks great),
Step 1: Battery Massacre
First, using the screwdriver bend the metal in the battery's end in order to remove it's bottom, and, of course, remove the bottom.
Then, push the battery terminals inside and the whole battery's guts should come out. If needed use something to push them.
Now you should have 3 things:
The battery's bottom,
The battery's case,
And the battery's terminal and inner batteries.
Now cut the terminal and dispose the small batteries and the bottom environmentaly safe way.
To open the case use the screwdriver to unfold the battery case's joint and open it.
Step 2: Electronics
Remember one thing when you reuse the battery terminal, it's polarities reverse, so you will have to solder the negativ (-) wire to the positive (+) terminal of the battery and vice-versa.
Step 3: Drilling
Step 4: Mounting
At last, with everything in place, close the case. Idiscovered that the case's joint was bent, so I had to hot glue it in place, so make sure you don't close yours. Now, with the case closed just hot glue the battery terminal in place and the speaker terminal too.
Step 5: Optional, Painting
Step 6: End and Use
How to use:
1- you plug your appliance to the detonator using the speaker plug,
2- you plug the 9v battery using the 9v battery clip,
3- insert and rotate the key to ON position,
4- now the ARMED light will light up, meaning that you can now detonate/ launch whatever you have plugged into the detonator
5- press both pushbuttons (whether at the same time whether sequencially) and it will detonate / lauch it!
6- undo al the previous steps.
OPTIONAL- repeat the process.