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| ==In-Depth: Smart Containers==
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| ===Need===
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| Question: Is there enough flour and sugar at home to make a cake for your friend's birthday tomorrow? Or do you need to stop at the store on your way home?
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|
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| ===Concept===
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| Design containers for pantry bulk items that relay content levels to smart phone app in real time.
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|
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| ===Equipment===
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| * [[Arduino]]
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| * Sharp GP2D120XJ00F Analog Distance Sensor 4-30cm
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| * Container
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| * Computer
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|
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| ===Prototype===
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| (coming soon)
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|
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| ===Code===
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| ====Arduino====
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| <source lang="java">
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| int IRpin = 1;
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| int val = 0;
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|
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| void setup() {
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| Serial.begin(9600);
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| }
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|
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| void loop() {
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| float volts = analogRead(IRpin)*0.00322265624;
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| float distance = 12.21*pow(volts, -1.15);
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| Serial.println(distance);
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| }
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| </source>
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|
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| ====Processing====
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| =====Tab 1=====
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| <source lang="java">
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| Serial myPort;
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| Table dataTable;
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| import processing.serial.*;
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| int incomingVal;
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| int level;
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| int r;
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| int b;
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| int q;
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| int o;
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|
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| void setup(){
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| size(255,255);
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| dataTable = new Table("data.tsv");
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| //rowCount = dataTable.getRowCount();
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| myPort = new Serial(this,"/dev/tty.usbmodem411",9600);
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| }
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| void draw(){
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| background(0);
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| while(myPort.available() > 0){
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| incomingVal = myPort.read();
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| }
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| level = height - incomingVal;
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| fill(level);
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| rect(0,level,width,height);
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|
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| PrintWriter output = createWriter("data/data.tsv");
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| output.println("Pasta:" +level+ " Rice:" +r+ " Bulgar:" +b+ " Quinoa:" +q+ " Oats:" +o );
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| output.flush();
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| }
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| </source>
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|
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| =====Tab 2=====
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| [http://benfry.com/writing/map/Table.pde Ben Fry's Table]
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|
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| ====PHP====
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| (Uploads data to web)
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| <source lang="php">
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| <?php
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| $file_handle = fopen("data.tsv", "r");
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| while (!feof($file_handle)) {
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| $line = fgets($file_handle);
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| echo $line;
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| }
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| fclose($file_handle);
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| ?>
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| </source>
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|
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| ===References===
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| [http://www.sparkfun.com/datasheets/Sensors/Infrared/GP2D120XJ00F_SS.pdf Reference for Sharp GP2D120XJ00F Analog Distance Sensor 4-30cm] <br>
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| [http://luckylarry.co.uk/arduino-projects/arduino-using-a-sharp-ir-sensor-for-distance-calculation/ Arduino – Using a Sharp IR Sensor for Distance Calculation] <br>
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| [http://www.ibm.com/developerworks/library/os-php-readfiles/ The Right Way to Read Files with PHP]
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