One Button Simon
Exercise
Create a program to time how long the user presses a push button.
Step 1
Starting code / circuit:
http://arduino.cc/en/Tutorial/Button
Make sure your pushbutton circuit is working.
Step 2
Add some output using Arduino's Serial library to help debug.
Serial.println("hello");
Exercise
Record a sequence of button presses (and releases) and have the arduino play back the pattern on the speaker.
Exercise
Write code to translate the presses from the user to a fixed pattern