The gist of it is to fit a fun music module from those musical greeting cards inside a keyboard and wire it to the caps-lock key to trigger the music each time the key is pressed. Do it on a friend's keyboard, unbeknownst to them, and wait for them to press caps-lock by mistake. Genius!
I'm in the ideal situation because many of my colleagues have the same standard issue Dell keyboard at work, so I took one home, wired the caps-lock key with some cheesy Christmas music and took it back to work ready to put my colleagues in the mood before the holidays. Once one is bored of it, I could simply move the keyboard to someone else!
Here's how to make yours!
- Keyboard with caps-lock LED
- Musical greeting card
- NPN transistor
- Thin wire
- Phillips screwdriver
- Solder iron & solder
- Electrical tape
Step 1: Choose the right keyboard and take it apart
Here we have a USB Dell keyboard with the caps-lock LED next to the wire connection.
Turn it over, remove the many screws holding it in place and keep them in a safe place for now.
Take the cover off and keep it close by.
The caps-lock LED is likely to be marked as such on the circuit board. It will be easy to locate.
Step 2: Get the musical module
Take the module out carefully and look at how the music is triggered.
Here it's a piece of paper preventing the contact from the battery. Classy.