Manage a parking lot: entrance and exit barriers, LEDs for car presence.
Manage a Parallax 4x4 Matrix Membrane Keypad
Connect logic gates in a breadboard
Use a NES controller with its serial protocol
Use a Joystick with a serial communication
Manage a school door with a presence sensor
Manage a water tank with two pumps and a variable amount of water demand
Send through a serial communication information to a 16x16 LED Matrix
Send a message using Morse code
