I'm looking at the Spark Fun Big Dome Push button. The spec on the page (and other places selling it) says that the LED is 12VDC. Does this mean that I need 12V as a minimum? Am I not able to just swap out the LED for one of my own (much lower voltage) if I dismantle it? I can't seem to find a datasheet for it.
Ultimately I want to have it connected to my machine via USB - which is why I can't provide it with 12V. My first thought at accomplishing this was to use an ATTiny85 I have connected via a USB to Serial breakout (or one of those USBs with an FTDI chip in them).
Any help would be much appreciated. Or alternately if my method to read the button's input is roundabout please let me know as I don't have an EE background!