Read Objects (Heights and Pieces)

Introduction: Read Objects (Heights and Pieces)

About: KEA is located in the Danish capital of Copenhagen where we teach more than 9000 students in the disciplines within design and technology. These instructables are created by students as documentation of their …

This only shows you the code (THIS IS NOT FOR THE ASSEMBLY OF THE BAND)

The code is set up after the transportation band, so if you wan't to use the code to your own band, it is easily for you to change the code.



It has been made with help from fellow student, teachers, and Arduino enthusiasts :)

Step 1: Things You Need

1x Grove ultrasonic sensor

1x Arduino board

1x Arduino base shield

1x Usb cable (Cable A to B)

You can see the things on the pictures above

Step 2: Code and Assembly

Connect the Arduino board to the Base shield

Connect the sensor into D7

Connect the USB cable to your computer and the board, at then upload your Arduino code into your Arduino program on your computer.

There you go, you can now se the heights and how many pieces of 3 types of object.

The object i've been using is

Object 1= 72mm

Object 2= 40,4mm

Object 3= 53,3mm

If you wan't, you can copy the codes, and change the range. Then will it be possible to have many mores object to read.


//Created by Mads Nilsson

// was used for examples in this code

// these constants won't change. They are the // lowest and highest readings you get from your sensor: const int sensorMin = 0; // sensor minimum (minimum measure) const int sensorMax = 128; // sensor maximum (The height from the sensor to the band)

int objectNumber1 = 1; // counting object number 1 int objectNumber2 = 1; // counting object number 2 int objectNumber3 = 1; // counting object number 3

// Pin output: const int pingPin = 7; // plug the sensor into D7. (You can also take another input, but than you have to change the code) int range = 0; // Range

void setup() { // put your setup code here, to run once: Serial.begin(9600); //turns on the serial printer. Allways use 9600


void loop() //Loop will run over and over again {

// establish variables for duration of the ping, // and the distance result milimeters: { long duration, mm; }

// The ping is triggered by a HIGH pulse of 2 or more microseconds. // Give a short LOW pulse beforehand to ensure a clean HIGH pulse: { pinMode(pingPin, OUTPUT); digitalWrite(pingPin, LOW); delayMicroseconds(2); digitalWrite(pingPin, HIGH); delayMicroseconds(5); digitalWrite(pingPin, LOW); } pinMode(pingPin, INPUT); int duration = pulseIn(pingPin, HIGH);

// convert time into distance int mm = microsecondsToMilimeters(duration); long Heights = 128 - mm; // Defines sensorMax - mm (Gives you the real heights of the object, you're measure)

if (Heights > 30 && Heights < 45) // Range of the first object) (Between 30-45mm) { Serial.println("Object 2"); // name of first object Serial.print("Heights: "); // Serial.print(128 - mm); // writes the heights in mm Serial.print(" mm"); Serial.println(); Serial.print("Pieces: "); // pieces of objects Serial.println(objectNumber1++); // writes how many of this object has passed the sensor Serial.println(); } if (Heights > 45 && Heights < 60) // Range of the second object) (Between 45-60mm) { Serial.println("Object 3"); Serial.print("Heights: "); Serial.print(128 - mm); Serial.print(" mm"); Serial.println(); Serial.print("Pieces: "); Serial.println(objectNumber2++); Serial.println(); } if (Heights > 60 && Heights < 80) // Range of the third object) (Between 60-80mm) { Serial.println("Obejct 1"); Serial.print("Heights: "); Serial.print(128 - mm); Serial.print(" mm"); Serial.println(); Serial.print("Pieces: "); Serial.println(objectNumber3++); Serial.println();



long microsecondsToMilimeters(long microseconds) { return microseconds / 2.9 / 2; }

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