copy lesson 50 and 51

lessons/lesson50-51.cpp

@@ -0,0 +1,70 @@
+// https://www.youtube.com/watch?v=-AvF2TsB2GI&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=50
+// https://www.youtube.com/watch?v=ep7uBz43fCI&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=51
+
+
+#include <Arduino.h>
+
+#include <Adafruit_Sensor.h>
+#include <DHT.h>
+// #include <DHT_U.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);
+
+#define DHTTYPE    DHT11
+#define DHTPIN     2
+
+DHT dht(DHTPIN, DHTTYPE);
+
+float humidity;
+float tempC;
+float tempF;
+
+int setTime = 500;
+int dt = 1000;
+
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+  Serial.println("DHT11 test!");
+
+  dht.begin();
+  delay(setTime);
+
+  lcd.begin(16, 2);
+  lcd.print("Hello, World!");
+
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  humidity = dht.readHumidity();
+  tempC = dht.readTemperature();
+  tempF = dht.readTemperature(true);
+
+  Serial.print("Humidity: ");
+  Serial.print(humidity);
+  Serial.print(" Temperature: ");
+  Serial.print(tempC);
+  Serial.print(" *C ");
+  Serial.print(tempF);
+  Serial.println(" *F");
+
+  lcd.clear();
+  lcd.setCursor(0, 0);
+  lcd.print("Humidity: ");
+  lcd.print(humidity);
+  lcd.print("%");
+
+  lcd.setCursor(0, 1);
+  lcd.print("Temp: ");
+  lcd.print(tempC);
+  lcd.print("oC ");
+  delay(dt);
+  lcd.clear();
+
+}