This is a quick hack/mod to a arcade button that allows illumination via a single LED.

arcade button (see http://www.sparkfun.com/products/9340)
and a super bright LED (see http://www.sparkfun.com/products/531)

Step 1: Remove the switch

1.) Gently pull the longest tab out of the switch
2.) the switch should now easily "flip up" 
3.) you can remove it from the button

<p>You forgot a current limiting resistor (a LED always needs a current limiting device, a resistor being the simplest) and telling people to play with the voltage to regulate the brightness is really bad advice.</p>
<p>Thanks for this idea, i have IL Competition buttons which i really like, adding some LEDs will make them really stand out.</p>
Here is a video with an RGB. http://www.instructables.com/id/HackMod-a-concave-arcade-style-button/
how did you hook up the led to Arduino board? can you pls post a picture to show how you did it and can you use teensy board? thank you

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