Lab 1: Physical Computing

Professor Kimiko Ryokai . INFO 262, Fall 2021


For this lab we were asked to blink an LED using an Arduino. I don’t know why the first thing that came to mind was the boom boom clap beat to “We Will Rock You” by Queen, but it became the inspiration for the blinking pattern of my LEDs. This lab also helped me review some information on circuits and and electricity flow so I’m very thankful for that.


  • 1 Arduino
  • 2 LEDs (I used Blue and Red)
  • 1 Resistor (220Ω)
  • 1 Breadboard
  • Some jumper wires (at least

Process Insights

While putting the LEDs together on the breadboard, I was curious about how using different resistors would change the degree of how “HIGH” or “LOW” the LED emission would be. I did consider the possibility of an accidental LED burn out so I tested this with higher resistors. I learned that high resistance = lower brightness.


//the setup function runs once when you press reset or power the board

Project Video

Future Exploration

Since the boom boom clap is a physical expression, I want to eventually translate this to the blinking project. I think it would be really cool if the LEDs respond to physical boom boom claps, maybe through an sound or even motion sensor. To be explored.

Hello Hello! I’m a senior at UC Berkeley studying Cognitive Science. I’m interested in human centered design for any scale~