Building the circuit:
Materials:
From Arduino Kit:
1 * Arduino Uno
1 * USB A to B cable
1 * breadboard
1 * buzzer
2 * LEDs
2 * 220 ohm resistors
2 * 10K ohm resistors
2 * pushbuttons
A handful of jumper cables
From cart:
2 * arcade buttons
1 * Multimeter (optional)
Circuit 1: Fade
The first two circuits are really easy, everything went well.
Circuit 2: toneMelody
I didn’t have time to do this in class, but I will definitely find time to study how the code of this program, e.g how to express tone using code, and then try different melodies myself.
Circuit 3: Speed Game
At first, the cirucuit didn’t go as the instructions required, for even if I pressed button 2 more times, the light conncted with button 1 lit up. It was because I forgot to connect one cable with the light.
If the circuit is rather complicated, what’s the way of building it orderly without missing any connection? Maybe I can try dissecting the whole circuit into different units.
Question 1:
According to Physical Comuting, interaction includes “input, output and processing”. In other words, people have to do something with the interaction device, otherwise nothing would happen. Also, the device has to do something in response (output). It cannot just be fed with information.
The third circuit we built corresponds with the definition. Two players’ pressing the button is a form of input, feeding the program with the number of times. 10 seconds later, after comparing which side pressed more times, the program gives output, in the form of lighting up one of the lights and making noise from a buzzer.
Question 2:
If we simply look at the button in the circuit, we would find that it is connected with itself without a resistor, in which case a short circuit is created and the button would be burnt. The resistor is there for protection.
Question 3:
I would build an invisible cloak with LEDs clinging to it. The color of each LED changes spontaneously with the changing of environment, and therefore the color of the person hidden in it would not be seen.