I am also pretty sure two flat prongs attached to the rivets are for the LED but I have no idea how to wire this up. Arcade Shop says that “Button includes a 6.8k resistor” and I do not know what that means. In my research other similar buttons (but not exact) require 2V to power and people say that if you just hook it up to 5V source you will fry the LED. If that is the case, what do I need to step down the voltage (assuming I can draw 5V from the iPAC2?
What you need is a 220 Ohm (or 160 Ohm), 1/4 Watt (or 1/8 or 1/2 Watt -- smaller wattage ==> thinner leads) current limiting resistor between 5v and the LED+ terminal.
If you connect LED- to ground, it will be always-on.
If you connect LED- to an LED controller and run a program like LEDBlinky, it will blink.
The only thing I'm not certain about is if the LED+ and LED- are swapped in this diagram.
- If they are, LMK and I'll update the diagram accordingly.
- You can test this using the diode check function on your multimeter. When the polarity is correct, the LED will light dimly.
Scott