8 LEDs

Identify which outputs you will use.

Wire up the circuit, remembering to use a resistor for each LED.

Using the pins you've decided on above, write the following programs, without using arrays:

• • all on, off, with delay (filename: led8_delay_all)

  • sequence through 8 LEDs (filename: led8_sequence)

  • light random LED (filename: led8_random_1)

    • see http://arduino.cc/en/Reference/Random

    • see http://arduino.cc/en/Reference/If

  • light random LED, with piezo buzzer, programming it to sound a tone whenever a random value between 0 and 255 is > 200 (filename: led8_buzzer)

    • see http://arduino.cc/en/Reference/Tone and http://arduino.cc/en/Reference/NoTone for the buzzer sound

      • (use a frequency between 500 and 2000 Hz)

  • binary counter (0, 1, 2, 3, etc.) (filename: led8_counter)

  • http://goo.gl/rccfZr

  • http://arduino.cc/en/Reference/For

  • add push button that resets the counter to zero (filename: led8_reset_counter)

  • see http://arduino.cc/en/Reference/Break

    • refer to "Circuit #5 Push Buttons" activity in booklet for how to wire up the switch