Thanks for the replies. I thought it was pretty common to hook
up multiple buttons with different resistors so that you can
tell by the current which button was pressed by reading the
current via an analog pin. I have done this with standard
buttons and resistors, but did it with a VCC not ground. Now I
have a break out board from a stereo with three buttons
connected the same way, but also connected to a ground |----
button 1 -- R1 -- (out) |---- button 2 -- R2 -- (out) |----
button 3 -- R3 -- (out) (all outs are connected as a single
wire) To describe it, there are 2 wires - one is input into the
board and other is output from the board. If no button is
pressed, there is no current through the wire. If a button is
pressed, the resistor between the button and the output controls
how much current flows. When I power an LED with normal 5v and a
resistor, it lights up full. To test, I ran a wire from the
ground/resistor to the input wire and output wire to ground on
the LED. This makes the ground end up running