Author: Sophie So Yeon Park

Sing happy birthday with LEDs

Posted by

0

Description

Learning about blinking LED using Arduino, I wanted to create something that could deliver value/benefit to an observer. A thought came to my mind: sing a song for him/her! By varying the tempo, I was able to make the LEDs blink along with the song, Happy Birthday.  One obstacle I found was that the LED bulbs were too bright to a naked eye and, thus, are in need of appropriate/decorative cover.

 

Components

  • 1 Arduino Uno
  • 1 Breadboard
  • 2 LEDs
  • Jumper wires
  • 1 USB cable
  • 1 220 ohm resistor

Code

// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin 13 as an output.
pinMode(13, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
digitalWrite(13, HIGH); // Happy birthday to you
delay(375);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH); //turn the LED on (HIGH is the voltage level)
delay(125); // wait for a second
digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
delay(50); // wait for a second
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(50);

digitalWrite(13, HIGH); // Happy birthday to you
delay(375);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(125);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(50);

digitalWrite(13, HIGH); // Happy birthday dear my friend
delay(375);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(125);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);

digitalWrite(13, HIGH); // Happy birthday to you
delay(375);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(125);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(50);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(50);
}

 

image1 image2

Favorite UI: IKEA showrooms

Posted by

0

One of my favorite UIs is the IKEA showrooms because of 1) its organization and 2) its interactive aspect. The IKEA showrooms are organized by room types (bedroom, living room, kitchen), rather than by furniture types (table, chair, bed). This style of display aligns well with customers’ decision making process of purchasing a furniture. The thought of “I need a dining table” derives from one’s need for a certain action, consumption of food. Because certain activities tend to occur in certain locations of the house, we almost intuitively categorize furniture by the location in which it will be utilized. The organization by room types at IKEA, thus, visually reduces customers’ effort to imagine themselves using the furniture and performing certain activities on/with it.

Another aspect of IKEA showrooms that many of us enjoy is the interactiveness. By enabling and encouraging interaction with its products, IKEA supports each customer’s different needs. For instance, a living room sofa may be used primarily for reading for some and watching TV for others. Depending on the main use of the furniture, one can try his/her reading posture (sitting up) while another can try a relaxing position(sitting back) on the couch. Also, many customers discover other possibilities they may not have pre-considered by seeing and putting themselves in an environment in which the products will reside. A simple example would be discovering a desire for a foot stool or a coffee table with storage space for board games.

The IKEA showrooms elegantly accommodate customers’ journey of furniture purchase from the motive for an activity, to learning/discovering, and to internalization of the furniture within their homes. Such displays benefits both the company by cost-effectively promoting its products and the customers by providing an enjoyable experience and low-cost furniture.