{"id":692,"date":"2016-09-13T21:15:53","date_gmt":"2016-09-14T04:15:53","guid":{"rendered":"http:\/\/blogs.ischool.berkeley.edu\/i262\/?p=692"},"modified":"2016-09-13T21:15:53","modified_gmt":"2016-09-14T04:15:53","slug":"creating-my-own-mini-glacier","status":"publish","type":"post","link":"https:\/\/blogs.ischool.berkeley.edu\/i262\/2016\/09\/13\/creating-my-own-mini-glacier\/","title":{"rendered":"Creating My Own Mini Glacier"},"content":{"rendered":"

For this project, I attempted to recreate the glaciers I saw on a recent trip to Iceland. The jagged edges of the ice coupled with the pure blue color was an image that I’ll never forget and wanted to replicate. I used an Arduino board and 3 LEDs – Red, Green, and Blue – and I used a plastic shower cap to diffuse the light.\u00a0Using specific keystrokes I was able to control the intensity of each of the LED’s brightness. For example, by pressing\u00a0capital “R”, “G”, or “B” would result in the corresponding LED to increase it’s brightness by 50. If the lowercase letter was pressed, the intensity would increase by 15.<\/p>\n

Components:<\/p>\n

    \n
  1. Adruino board<\/li>\n
  2. Breadboard<\/li>\n
  3. 3 LEDs (red, green, blue)<\/li>\n
  4. 3 ohm resistors<\/li>\n
  5. 4 wires<\/li>\n
  6. 1 plastic shower cap<\/li>\n<\/ol>\n

     <\/p>\n

    Code:<\/p>\n

    char serInString[100]; \/\/ array that will hold the different bytes of the string. 100=100characters;
    \n\/\/ -> you must state how long the array will be else it won’t work properly
    \nchar colorCode;
    \nint colorVal;
    \nint redVal;
    \nint greenVal;
    \nint blueVal;
    \nint redPin = 9; \/\/ Red LED, connected to digital pin 9
    \nint greenPin = 10; \/\/ Green LED, connected to digital pin 10
    \nint bluePin = 11; \/\/ Blue LED, connected to digital pin 11
    \nvoid setup() {
    \npinMode(redPin, OUTPUT); \/\/ sets the pins as output
    \npinMode(greenPin, OUTPUT);
    \npinMode(bluePin, OUTPUT);
    \nSerial.begin(9600);
    \nanalogWrite(redPin, 127); \/\/ set them all mid-brightness
    \nanalogWrite(greenPin, 127); \/\/ set them all mid-brightness
    \nanalogWrite(bluePin, 127); \/\/ set them all mid-brightness
    \nSerial.println(“enter color command using r’s, b’s, g’s, R’s, B’s, and G’s (e.g. ‘rrrrrrggggg’ ‘RRBBGG’ RRRRR’) :”);
    \n}
    \nvoid loop () {
    \n\/\/ clear the string
    \nmemset(serInString, 0, 100);
    \n\/\/read the serial port and create a string out of what you read
    \nreadSerialString(serInString);
    \n\/\/ initialize all back to zero for each loop
    \nredVal = 0;
    \ngreenVal = 0;
    \nblueVal = 0;
    \ncolorCode = serInString[0];
    \nif( colorCode == ‘r’ || colorCode == ‘g’ || colorCode == ‘b’ || colorCode == ‘R’ || colorCode == ‘G’ || colorCode == ‘B’) {
    \n\/\/ increment each color based on number of each letter
    \nfor (int i = 0; i < strlen(serInString); i++) {
    \nswitch(serInString[i]) {
    \ncase ‘r’:
    \nredVal += 15;
    \nbreak;
    \ncase ‘g’:
    \ngreenVal += 15;
    \nbreak;
    \ncase ‘b’:
    \nblueVal += 15;
    \nbreak;
    \ncase ‘R’:
    \nredVal += 50;
    \nbreak;
    \ncase ‘G’:
    \ngreenVal += 50;
    \nbreak;
    \ncase ‘B’:
    \nblueVal += 50;
    \n}
    \n}
    \nSerial.print(“Setting color “);
    \nSerial.println();
    \nSerial.print(“red to “);
    \nSerial.print(redVal);
    \nSerial.println();
    \nSerial.print(“green to “);
    \nSerial.print(greenVal);
    \nSerial.println();
    \nSerial.print(“blue to “);
    \nSerial.print(blueVal);
    \nSerial.println();
    \nserInString[0] = 0; \/\/ indicates we’ve used this string
    \nanalogWrite(redPin, redVal);
    \nanalogWrite(greenPin, greenVal);
    \nanalogWrite(bluePin, blueVal);
    \n}
    \ndelay(100); \/\/ wait a bit, for serial data
    \n}
    \n\/\/read a string from the serial and store it in an array
    \n\/\/you must supply the array variable
    \nvoid readSerialString (char *strArray) {
    \nint i = 0;
    \nif(!Serial.available()) {
    \nreturn;
    \n}
    \nwhile (Serial.available()) {
    \nstrArray[i] = Serial.read();
    \ni++;
    \n}
    \n}<\/p>\n

     <\/p>\n

    \"DSC_0411\"<\/p>\n

    Below an Icelandic glacier; what I wanted to mimic.<\/p>\n

     <\/p>\n

    \"IMG_7384\" \"IMG_7385\" \"IMG_7386\" \"IMG_7387\"<\/p>\n

    Lights changing video<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    For this project, I attempted to recreate the glaciers I saw on a recent trip to Iceland. The jagged edges of the ice coupled with the pure blue color was an image that I’ll never forget and wanted to replicate. … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":3258,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63434],"tags":[],"class_list":["post-692","post","type-post","status-publish","format-standard","hentry","category-lab02"],"_links":{"self":[{"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/posts\/692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/users\/3258"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/comments?post=692"}],"version-history":[{"count":0,"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/posts\/692\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/media?parent=692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/categories?post=692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ischool.berkeley.edu\/i262\/wp-json\/wp\/v2\/tags?post=692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}