Changed examples to use VernierLib.

Author: dvernier

README.md

@@ -4,13 +4,15 @@ Using Arduino and Vernier Sensors
 Overview
 --------
 
-Vernier has always supported hands-on, do-it-yourself projects for students (or teachers). The availability of very inexpensive, easy-to-program microcomputers, like the Arduino, makes projects easy and affordable.
+Vernier has always supported hands-on, do-it-yourself projects for students (or teachers). The availability of very inexpensive, easy-to-program microcomputers,
+like the Arduino, makes projects easy and affordable.
 
-We posted a guide to [Using Vernier sensors with Arduino][1]. It is a free guide to connecting, calibrating, writing programs, and doing fun projects with our sensors. The guide references sketches included in this repository.
+We posted a guide to [Using Vernier sensors with Arduino][1]. It is a free guide to connecting, calibrating, writing programs, and doing fun projects with our sensors.
+The guide references sketches included in this repository.
 
 All sketches are developed by Vernier.
 
-If you want an Arduino library to automatically detect Vernier sensors, please see [VernierLib][2]
+Include the [VernierLib library][2] in your version of the Arduino IDE to make using Vernier sensors easy.
 
 
 License

VernierAnalogSensorThreshold/VernierAnalogSensorThreshold.ino

@@ -1,70 +1,62 @@
 /*
-VernierAnalogSensorThreshold (v. 2014.09)
-Reads a Vernier analog (BTA) sensor connnected to pin A0 of the Arduino. This
-sketch displays the sensor reading on the Serial Monitor. As written, the 
-reading will be displayed every half second. Change the variable 
-TimeBetweenReadings to change the rate.
+VernierAnalogSensorThreshold (v. 2018.05)
+Reads a Vernier analog (BTA) sensor connnected to pin A0 of the Arduino, Analog 1 on
+the Vernier Interface Shield. This sketch displays the sensor reading on the Serial Monitor.
+As written, the reading will be displayed every half second. Change the variable 
+timeBetweenReadings to change the rate.
 
 This has code added to turn on line D13 if the sensor reading exceeds a
 threshold.
 
 See www.vernier.com/arduino for more information.
 
 */
-float Threshold =100 ;// this is the limit you are setting (here we are using 100)
+#include "VernierLib.h" 
+VernierLib Vernier;
+float sensorReading;
+int readingNumber;
+float threshold =100 ;// this is the limit you are setting (here we are using 100)
 ////////////////////////////////////////
-// This is the information on the sensor being used. 
-//See the www.vernier.com/products/sensors.
-char Sensor[]="Hand Dynamometer";
-float Intercept = -19.295;
-float Slope = 175.416;
-int TimeBetweenReadings = 500;
+int timeBetweenReadings = 500;
 /////////////////////////////////////////
 void setup() 
 {
   Serial.begin(9600); //initialize serial communication at 9600 bits per second
   pinMode(13, OUTPUT); // This specifies that digital line D13 will be used for output (not input, which is the default)
-  Serial.println("Vernier Format 2");
-  Serial.print(Sensor);
+  Vernier.autoID();// this is the routine to do the autoID Serial.println("Vernier Format 2");
+  Serial.println(Vernier.sensorName());
   Serial.print(" ");
   Serial.println("Readings taken using Ardunio");
   Serial.println("Data Set");
   Serial.print("Time");//long name
   Serial.print("\t"); //tab character
-  Serial.println ("Force"); //long name, change to match sensor
+  Serial.println(Vernier.sensorName());
   Serial.print ("t"); //short name 
   Serial.print("\t"); //tab character
-  Serial.println("F");//short name, change to match sensor 
+  Serial.println(Vernier.shortName());
   Serial.print("seconds");//units
   Serial.print("\t"); // tab character
-  Serial.println ("newtons"); //change to match sensor
+  Serial.println(Vernier.sensorUnits());
 }
 void loop() 
 {
-  float Count;
-float Voltage;
-float SensorReading;
-int ReadingNumber=0;
-float Time;
-//the print below does the division first to avoid overflows
-  Serial.print(ReadingNumber/1000.0*TimeBetweenReadings); 
-  Count = analogRead(A0);
-  Voltage = Count / 1023 * 5.0;// convert from count to raw voltage
-  SensorReading= Intercept + Voltage * Slope;
-  Serial.print("        ");
-  Serial.println(SensorReading);
-  delay(TimeBetweenReadings);// delay in between reads for stability
-  if (SensorReading>Threshold){
+   sensorReading =Vernier.readSensor();
+  Serial.print(readingNumber/1000.0*timeBetweenReadings); 
+  Serial.print ("\t");
+  Serial.println(sensorReading);
+
+  delay(timeBetweenReadings);// delay in between reads for stability
+  if (sensorReading>threshold){
     digitalWrite(13, HIGH);
     }// This turns on the LED 
   else 
     {
     digitalWrite(13,LOW);
     }
-  ReadingNumber++;
+  readingNumber++;
 }
 
 
 
 
-
+

VernierLaserTracker/VernierLaserTracker.ino

@@ -1,29 +1,26 @@
-/*VernierLaserTracker  (v 2014.4)
+/*VernierLaserTracker  (v 2018.5)
 Monitors the position of an object using a Vernier Motion Detector
 and then aims a laser pointer mounted on a servo motor at the object.
 
-Because of the use of a trig function (arctangent) in the calculations, 
-this sketch requires the math.h library. It also requires the servo library.
+This sketch uses three Arduino libraries. To read the Motion Detector, it uses
+the VernierLib library. Because of the use of a trig function (arctangent) in the 
+calculations, this sketch requires the math.h library. It also requires the servo 
+library to control the servo motor.
 
 See www.vernier.com/arduino for more information.
  */
 #include <math.h>
 #include <Servo.h> 
 Servo myservo;  // create servo object to control a servo 
-long time;// clock reading in microseconds
-long Duration; // time it take echo to return
-const int SpeedOfSound = 344; //in m/s
-double Distance;// in centimeters
-int val = 0;
-const int TriggerPin = 3; //trigger pin
-const int EchoPin = 2;// echo pin
+#include "VernierLib.h" 
+VernierLib Vernier;
+float distance = 0;// distqnce in cm 
 int Range=100; //distance in cm from Laser Pointer/Servo motor to Motion Detector
+const int Laser = 6;//laser pin, connect laser to pin 6 of the Arduino, which is the first line on Digital 2
+
 void setup() 
 {
   myservo.attach(9);  // attaches the servo on pin 9 to the servo object 
-  // initialize the Ping pin as an output:
-  pinMode(TriggerPin, OUTPUT);
-  pinMode(EchoPin, INPUT); //this is the pin that goes high when an echo is received
   // initialize serial communication at 9600 bits per second:
   Serial.begin(9600);
   Serial.println(" ");
@@ -44,25 +41,19 @@ void loop()
   double Angle =0;
   float Degrees;
   int ServoSetting;
-  digitalWrite(TriggerPin, LOW);
-  delayMicroseconds(4000);
-  digitalWrite(TriggerPin, HIGH); // start the ultrasound pulse
-  time = micros(); //note time
-  delayMicroseconds(900); //delay during the blanking time
-  do
-  {
-    val =digitalRead(EchoPin);
-    // if no echo, repeat loop and wait:
-  }
-  while (val == LOW) ;
-  Duration =micros() - time;
-  /* The speed of sound is 344 m/s.
-  The ultrasound travels out and back, so to find the distance of the
-  object we take half of the distance traveled.*/
-  Distance= Duration *SpeedOfSound/2/10000 ;// note convert to cm
-  Serial.print(Distance);
+    distance = Vernier.readMotionDetector();
+  Serial.print(distance);
+  Serial.println(" cm");
+  if (distance < 120)
+   {
+     digitalWrite(Laser, HIGH);// if closest item is within 120 cm it turns laser on
+   }
+ else digitalWrite(Laser, LOW);
+  delay(100);//delay a tenth of a second
+  
+  Serial.print(distance);
   Serial.print("\t"); // tab character
-  ArcTan = atan(Distance/Range); 
+  ArcTan = atan(distance/Range); 
   Serial.print(ArcTan);
   Serial.print("\t"); // tab character
   Degrees= ArcTan*57.29578; //convert radians to degrees

VernierLaserTrackerAutoOn/VernierLaserTrackerAutoOn.ino

@@ -1,37 +1,26 @@
-#include <Servo.h>
-
-/*VernierLaserTrackerAutoOn  (v 2014.12)
+/*VernierLaserTracker  (v 2018.5)
 Monitors the position of an object using a Vernier Motion Detector
-and then aims a laser pointer mounted on a servo motor at the object. 
-This version also turns on the laser pointer when an object is
-detected within 120 cm of Motion Detector. This requires a hard 
-wired laser pointer!
+and then aims a laser pointer mounted on a servo motor at the object.
 
-Because of the use of a trig function (arctangent) in the calculations, 
-this sketch requires the math.h library. It also requires the servo library.
+This sketch uses three Arduino libraries. To read the Motion Detector, it uses
+the VernierLib library. Because of the use of a trig function (arctangent) in the 
+calculations, this sketch requires the math.h library. It also requires the servo 
+library to control the servo motor.
 
 See www.vernier.com/arduino for more information.
  */
 #include <math.h>
 #include <Servo.h> 
 Servo myservo;  // create servo object to control a servo 
-long time;// clock reading in microseconds
-long Duration; // time it take echo to return
-const int SpeedOfSound = 344; //in m/s
-double Distance;// in centimeters
-int val = 0;
-int laserval = 0;
-const int TriggerPin = 3; //trigger pin
-const int EchoPin = 2;// echo pin
-const int Laser = 6;//laser pin
+#include "VernierLib.h" 
+VernierLib Vernier;
+float distance = 0;// distqnce in cm 
 int Range=100; //distance in cm from Laser Pointer/Servo motor to Motion Detector
+const int laser = 6;//laser pin, connect laser to pin 6 of the Arduino, which is the first line on Digital 2
+
 void setup() 
 {
   myservo.attach(9);  // attaches the servo on pin 9 to the servo object 
-  // initialize the Ping pin as an output:
-  pinMode(TriggerPin, OUTPUT);
-  pinMode(EchoPin, INPUT); //this is the pin that goes high when an echo is received
-  pinMode(Laser, OUTPUT); //this pin goes high to turn laser on
   // initialize serial communication at 9600 bits per second:
   Serial.begin(9600);
   Serial.println(" ");
@@ -52,33 +41,19 @@ void loop()
   double Angle =0;
   float Degrees;
   int ServoSetting;
-  digitalWrite(TriggerPin, LOW);
-  delayMicroseconds(4000);
-  digitalWrite(TriggerPin, HIGH); // start the ultrasound pulse
-  time = micros(); //note time
-  delayMicroseconds(900); //delay during the blanking time
-  do
-  {
-    val =digitalRead(EchoPin);
-    // if no echo, repeat loop and wait:
-  }
-  while (val == LOW) ;
-    Duration =micros() - time;
-  /* The speed of sound is 344 m/s.
-  The ultrasound travels out and back, so to find the distance of the
-  object we take half of the distance traveled.*/
-  Distance= Duration *SpeedOfSound/2/10000 ;// note convert to cm
-  if (Distance < 120)
-{
- digitalWrite(Laser, HIGH);// if closest item is within 120 cm it turns laser on
-}
-else
-{
-digitalWrite(Laser, LOW);
-}
-  Serial.print(Distance);
+    distance = Vernier.readMotionDetector();
+  Serial.print(distance);
+  Serial.println(" cm");
+  if (distance < 120)
+   {
+     digitalWrite(laser, HIGH);// if closest item is within 120 cm it turns laser on
+   }
+  else digitalWrite(laser, LOW);
+  delay(100);//delay a tenth of a second
+  
+  Serial.print(distance);
   Serial.print("\t"); // tab character
-  ArcTan = atan(Distance/Range); 
+  ArcTan = atan(distance/Range); 
   Serial.print(ArcTan);
   Serial.print("\t"); // tab character
   Degrees= ArcTan*57.29578; //convert radians to degrees
@@ -89,4 +64,4 @@ digitalWrite(Laser, LOW);
 }
 
 
-
+