Sensors/src/main.cpp

@@ -1,5 +1,4 @@
-// Lesson 61. Ultrasonic Sensor with LCD Display
-// https://www.youtube.com/watch?v=nC2CDaqJomA
+// https://www.youtube.com/watch?v=A6kEroT-g2o&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=60
 
 
 #include <Arduino.h>
@@ -8,27 +7,21 @@
 const int rs = 7, en = 8, d4 = 9, d5 = 10, d6 = 11, d7 = 12;
 LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
 
+
 int trigPin = 2;
 int echoPin = 3;
 int pingTravleTime;
 float distance;
-const int pulsTime = 40;                // uS
+const int pulsTime = 40; // uS
 const float pingTimeToDistance = 0.017; // uS to cm, travletime[s] * 340 m/s / 2
 
-int numReadings = 50;
-float averageMeasurements;
-float averageTime;
-float bucketDist = 0.0;
-float bucketTime = 0.0;
-
 int buttonPin = A0;
 int buttomState;
 
 int setTime = 500;
 int dt = 1000;
 
-void setup()
-{
+void setup() {
   // put your setup code here, to run once:
   Serial.begin(9600);
   Serial.println("Measurring Distance");
@@ -44,8 +37,7 @@ void setup()
   digitalWrite(buttonPin, HIGH);
 }
 
-void loop()
-{
+void loop() {
   // put your main code here, to run repeatedly
   buttomState = digitalRead(buttonPin);
   while (buttomState == HIGH)
@@ -56,47 +48,35 @@ void loop()
     lcd.print("Press the Button");    
     buttomState = digitalRead(buttonPin);
   }
-
   {
-    bucketDist = 0.0;
-    bucketTime = 0.0;
-
-    for (int i = 0; i < numReadings; i++)
-    {
-      digitalWrite(trigPin, LOW);
-      delayMicroseconds(pulsTime);
-      digitalWrite(trigPin, HIGH);
-      delayMicroseconds(pulsTime);
-      digitalWrite(trigPin, LOW);
-      pingTravleTime = pulseIn(echoPin, HIGH);
-      delay(25);
-
-      distance = pingTravleTime * pingTimeToDistance; // Travel time to distance in cm
+    digitalWrite(trigPin, LOW);
+    delayMicroseconds(pulsTime);
+    digitalWrite(trigPin, HIGH);
+    delayMicroseconds(pulsTime);
+    digitalWrite(trigPin, LOW);
+    pingTravleTime = pulseIn(echoPin, HIGH);
+    delay(25);
 
-      bucketDist = bucketDist + distance;
-      bucketTime = bucketTime + pingTravleTime;
-
-    }
-
-    averageMeasurements = bucketDist / numReadings;
-    averageTime = bucketTime / numReadings;
+    distance = pingTravleTime * pingTimeToDistance; // Travel time to distance in cm
 
     Serial.print("Ping Time and Distance:");
     Serial.print("Ping Time: ");
-    Serial.print(averageTime);
+    Serial.print(pingTravleTime);
     Serial.print(" Distance: ");
-    Serial.print(averageMeasurements);
+    Serial.print(distance);
     Serial.println(" cm");
 
     // Display on LCD
     lcd.clear();
     lcd.setCursor(0, 0);
     lcd.print("Ping Time: ");
-    lcd.print(averageTime);
+    lcd.print(pingTravleTime);
     lcd.print("us");
     lcd.setCursor(0, 1);
     lcd.print("Distance: ");
-    lcd.print(averageMeasurements);
+    lcd.print(distance);
     lcd.print("cm");
   }
+  
+
 }

lessons/lesson61.cpp

@@ -1,102 +0,0 @@
-// Lesson 61. Ultrasonic Sensor with LCD Display
-// https://www.youtube.com/watch?v=nC2CDaqJomA
-
-
-#include <Arduino.h>
-#include <LiquidCrystal.h>
-
-const int rs = 7, en = 8, d4 = 9, d5 = 10, d6 = 11, d7 = 12;
-LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
-
-int trigPin = 2;
-int echoPin = 3;
-int pingTravleTime;
-float distance;
-const int pulsTime = 40;                // uS
-const float pingTimeToDistance = 0.017; // uS to cm, travletime[s] * 340 m/s / 2
-
-int numReadings = 50;
-float averageMeasurements;
-float averageTime;
-float bucketDist = 0.0;
-float bucketTime = 0.0;
-
-int buttonPin = A0;
-int buttomState;
-
-int setTime = 500;
-int dt = 1000;
-
-void setup()
-{
-  // put your setup code here, to run once:
-  Serial.begin(9600);
-  Serial.println("Measurring Distance");
-
-  delay(setTime);
-
-  lcd.begin(16, 2);
-  lcd.print("Hello, World!");
-
-  pinMode(trigPin, OUTPUT);
-  pinMode(echoPin, INPUT);
-  pinMode(buttonPin, INPUT);
-  digitalWrite(buttonPin, HIGH);
-}
-
-void loop()
-{
-  // put your main code here, to run repeatedly
-  buttomState = digitalRead(buttonPin);
-  while (buttomState == HIGH)
-  {
-    lcd.setCursor(0, 0);
-    lcd.print("Place the Target");
-    lcd.setCursor(0, 1);
-    lcd.print("Press the Button");
-    buttomState = digitalRead(buttonPin);
-  }
-
-  {
-    bucketDist = 0.0;
-    bucketTime = 0.0;
-
-    for (int i = 0; i < numReadings; i++)
-    {
-      digitalWrite(trigPin, LOW);
-      delayMicroseconds(pulsTime);
-      digitalWrite(trigPin, HIGH);
-      delayMicroseconds(pulsTime);
-      digitalWrite(trigPin, LOW);
-      pingTravleTime = pulseIn(echoPin, HIGH);
-      delay(25);
-
-      distance = pingTravleTime * pingTimeToDistance; // Travel time to distance in cm
-
-      bucketDist = bucketDist + distance;
-      bucketTime = bucketTime + pingTravleTime;
-
-    }
-
-    averageMeasurements = bucketDist / numReadings;
-    averageTime = bucketTime / numReadings;
-
-    Serial.print("Ping Time and Distance:");
-    Serial.print("Ping Time: ");
-    Serial.print(averageTime);
-    Serial.print(" Distance: ");
-    Serial.print(averageMeasurements);
-    Serial.println(" cm");
-
-    // Display on LCD
-    lcd.clear();
-    lcd.setCursor(0, 0);
-    lcd.print("Ping Time: ");
-    lcd.print(averageTime);
-    lcd.print("us");
-    lcd.setCursor(0, 1);
-    lcd.print("Distance: ");
-    lcd.print(averageMeasurements);
-    lcd.print("cm");
-  }
-}