major changes

- switched to the correct DHT library
- cleaned out cruft
- got more light sensors connected
- display on the LCD

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

soler_chager.ino

@@ -1,22 +1,30 @@
-#include <Wire.h>
+  #include <Wire.h>
 #include <LiquidCrystal_I2C.h>
-#include <DHT.h>
+#include <dht11.h>
 #include <BH1750.h>
 #include <Servo.h>
 
 #define DHT11_PIN 7
 #define photoL1 A0
+#define photoL2 A1
+#define photoL3 A2
+#define photoL4 A3
 #define LED 3
 #define button 2
 #define buzzer 6
 #define circleServoPin 9
 #define tiltServoPin 10
+#define LED 3//define the pin of LED as D10
 
 BH1750 lightMeter;
-DHT dht(DHT11_PIN, DHT11);
+dht11 DHT;
 volatile int buttonState;
 volatile int lightReadL1 = 0;
-int count;
+volatile int lightReadL2 = 0;
+volatile int lightReadL3 = 0;
+volatile int lightReadL4 = 0;
+int value;
+int servoPin = 9;//set the pin of the servo
 LiquidCrystal_I2C lcd(0x27, 16, 2);
 Servo circleServo;
 Servo tiltServo;
@@ -24,38 +32,39 @@ Servo tiltServo;
 void setup()
 {
   Serial.begin(9600);
+  Serial.println("");
   Serial.print("setting up!\n");
-  pinMode(LED, OUTPUT); //initialize digital pin LED as an output.
-  pinMode(button, INPUT);
-  pinMode(buzzer, OUTPUT);
-  circleServo.attach(circleServoPin);
-  tiltServo.attach(tiltServoPin);
 
   Serial.print("init lcd\n");
   lcd.init();
   lcd.backlight();
   lcd.setCursor(0,0);
-  lcd.printstr("Hello, World!");
+  lcd.printstr("setting up!");
-  lcd.setCursor(0,1);
+  //lcd.setCursor(0,1);
-  lcd.printstr("hello, Roald!");
+  //lcd.printstr("hey,human!");
 
-  dht.begin(20);
+  pinMode(LED, OUTPUT); //initialize digital pin LED as an output.
+  pinMode(button, INPUT);
+  pinMode(buzzer, OUTPUT);
+  //circleServo.attach(circleServoPin);
+  //tiltServo.attach(tiltServoPin);
 
   Serial.print("done setting up!\n");
+  lcd.clear();
+  lcd.setCursor(0,0);
+  lcd.printstr("done");
+
   //Intialize the 12C bus
   Wire.begin();
   //On esp8266 you can select SCL and SDA pins using Wire.begin
   //For Wemos /Lolin D1 Mini Pro and the Ambient Light shield use
-  Wire.begin();
   lightMeter.begin();
   Serial.println(F("BH1750 Test begin"));
 }
 
-void loop(){
+void loop()
-  //Serial.print("[");
+{
-  //Serial.print(count);
+  /*
-  //Serial.print("] hey\n");
-  
   delay(300);
   for (int i = 180; i > 0; i--) {
     circleServo.write(i);
@@ -67,92 +76,106 @@ void loop(){
     tiltServo.write(i);
     delay(10);
   }
+  */
+
+  /*
+    servopulse(servoPin, 0);//rotate to 0 degree
+    delay(200);//delay in 1s
+    servopulse(servoPin, 90);//rotate to 90 degrees
+    delay(200);
+    servopulse(servoPin, 180);//rotate to 1800 degrees
+    delay(200);
 
-  lightReadL1 = analogRead(photoL1);
     if (lightReadL1 > 300){
     digitalWrite(LED, HIGH);
   }
   else{
     digitalWrite(LED, LOW);
   }
+  */
 
-  float lux = lightMeter.readLightLevel();
+  int chk;
-  float hum = dht.readTemperature();
+  chk = DHT.read(DHT11_PIN);
-  float temp = dht.readHumidity();
+  switch (chk)
   {
-    Serial.print("hum: ");
+    case DHTLIB_OK:
-    Serial.print(hum);
+      break;
-    Serial.print("  temp: ");
+    case DHTLIB_ERROR_CHECKSUM:
-    Serial.print(dht.convertCtoF(temp));
+      Serial.println("[ERR] dht11 checksum");
-    Serial.print("  L1: ");
+      break;
-    Serial.print(lightReadL1);
+    case DHTLIB_ERROR_TIMEOUT:
-    Serial.print(" PanL: ");
+      Serial.println("[ERR] dht11 timeout");
-    Serial.print(lux);
+      break;
-    Serial.println("lx");
+    default:
-    delay(50);
+      break;
   }
 
-  //delay(100);
+  float lux = lightMeter.readLightLevel();
+  lightReadL1 = analogRead(photoL1);
+  lightReadL2 = analogRead(photoL2);
+  lightReadL3 = analogRead(photoL3);
+  lightReadL4 = analogRead(photoL4);
+  {
+    char buf[40];
+    char lStr[6];
+    dtostrf(lux, 4, 2, lStr);  // https://forum.arduino.cc/t/sprintf-with-float-values/937562
+    sprintf(buf, "h: %d%%, t: %dF, l: %s, ", DHT.humidity, CtoF(DHT.temperature), lStr);
+    Serial.print(buf);
 
-  //blink();
+    sprintf(buf, "L1: %d, L2: %d, L3: %d, L4: %d", lightReadL1, lightReadL2, lightReadL3, lightReadL4);
+    Serial.println(buf);
+
+    lcd.clear();
+    // the LCD has two rows and 17 columns ...
+    sprintf(buf, "h:%d,t:%d,l:%s", DHT.humidity, CtoF(DHT.temperature), lStr);
+    lcd.setCursor(0,0);
+    lcd.printstr(buf);
+
+    sprintf(buf, "%d,%d,%d,%d", lightReadL1, lightReadL2, lightReadL3, lightReadL4);
+    lcd.setCursor(0,1);
+    lcd.printstr(buf);
+  }
+  delay(2000);
+
+   /*
+  {
+    Serial.print("hum: ");
+    Serial.print(DHT.humidity);
+    Serial.print(",  temp: ");
+    Serial.print(CtoF(DHT.temperature));
+    Serial.print(",  L1: ");
+    Serial.print(lightReadL1);
+    Serial.print(",  L2: ");
+    Serial.print(lightReadL2);
+    Serial.print(",  L3: ");
+    Serial.print(lightReadL3);
+    Serial.print(",  L4: ");
+    Serial.print(lightReadL4);
+    Serial.print(",  lx:  ");
+    Serial.println(lux);
+    delay(500);
+  }
+  */
 
   buttonState = digitalRead(button);
   if(buttonState == 0) {
-    digitalWrite(LED, HIGH);
+    for(value = 0; value < 255; value +1){
-    birthdaySong();
+      analogWrite (LED, value);//LED lights gradually light up
+    }
     } else {
     digitalWrite(LED, LOW);
+    value = 0;
   }
-  //delay(100);
-  
-  //count++;
 }
 
-void birthdaySong() {
+int CtoF(int temp)
-  tone(buzzer, 294);
+{
-  delay(250);
+  return temp * 1.8 + 32;
-  tone(buzzer, 440);
+}
-  delay(250);
+
-  tone(buzzer, 392);
+int FtoC(int temp)
-  delay(250);
+{
-  tone(buzzer, 532);
+  return (temp - 32) * 0.55555;
-  delay(250);
-  tone(buzzer, 494);
-  delay(500);
-  tone(buzzer, 392);
-  delay(250);
-  tone(buzzer, 440);
-  delay(250);
-  tone(buzzer, 392);
-  delay(250);
-  noTone(buzzer);
-  tone(buzzer, 587);
-  delay(250);
-  tone(buzzer, 532);
-  delay(500);
-  tone(buzzer, 392);
-  delay(250);
-  tone(buzzer, 784);
-  delay(250);
-  tone(buzzer, 659);
-  delay(250);
-  tone(buzzer, 532);
-  delay(250);
-  tone(buzzer, 494);
-  delay(250);
-  tone(buzzer, 440);
-  delay(250);
-  tone(buzzer, 698);
-  delay(375);
-  tone(buzzer, 659);
-  delay(250);
-  tone(buzzer, 532);
-  delay(250);
-  tone(buzzer, 587);
-  delay(250);
-  tone(buzzer, 532);
-  delay(500);
-  noTone(buzzer);
 }
 
 void blink()