Step 1: Stuff You'll Need
- A 9-volt battery clip like the one shown
- A tactile switch*
- A non-diffused LED in the color of your choice
- A resistor to fit the requirements of your LED**
- A little holder for your LED***
- A battery****
- Soldering iron w/ solder
- Hot glue gun w/ glue
*You can salvage these out of tons of electronics. Listen for the buttons that make that characteristic 'click' sound when you press them
**Resistance equals Voltage divided by Amperage (R=v / i)
***Optional. If you want one, you can buy one, or you can make one, or you can get one out of disposable cameras as the holder for the neon lamp (that's what I did)
****A 9-volt works okay, but it may overpower your LED. You may want to try those 2 x AA holders with the 9-volt style clip on top from Radioshack that I talked about earlier.
Step 2: Gluing and Soldering
1. Glue down your switch as shown. If your switch has 4 tabs, you can probably break off the ones on one side.
2. Glue down the resistor, bend the wires and solder one of the leads to the switch.
3. If you have an LED holder, go ahead and glue it down. If you don't, then glue your LED where the holder would be.
4. Put the LED in the holder and solder a lead the the resistor, making note of the polarity
5. Clip the wires from the 9-volt clip to length and solder one to the switch and one directly to the LED
Great! You're done building it. Now let's test it...