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Millis/State machine

We use a button, 2 resistors, and an Led to test out our Arduino.

2

1.

We connect the led's with the resistors.

millis3.png

2.

We now power the bread board from ground and 5v pins on the Arduino to the rails of the bread board.

millis2.png
3

3.

We now connect the digital pins 3, 4 to the led. Pin 4 goes to the green led, and pin 3 goes to the red led.

Millis1.png
Code

4.

Software:

We read the button on pin 2. If the button is LOW [0v/gnd] then it is not pressed. If the button is HIGH [5v/vcc] then it IS pressed.

Note:

clipart1869059.png

You can use this to scan multiple buttons while blinking an led, or running code while other code is processing.

More Info coming soon!

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