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--- pm:prj2023:avaduva:wstation [2023/05/29 03:29]
malina.popa [Hardware Design]
+++ pm:prj2023:avaduva:wstation [2023/05/30 13:16] (current)
malina.popa [Software Design]
@@ Line 38: / Line 38: @@
 ==For the LCD 16x2==
-   - VSS pin on the LCD to the GND pin on the sensor DHT11;
+   - VDD pin on the LCD to the VCC pin on the sensor DHT11;
-  -  VDD pin on the LCD to the VCC pin on the sensor DHT11;
+  -  VSS pin on the LCD to the GND pin on the sensor DHT11;
   -  RS pin on the LCD to digital pin 12 on Arduino Uno;
   -  E pin on the LCD to digital pin 11 on Arduino Uno;
@@ Line 47: / Line 47: @@
   -  D7 pin on the LCD to digital Pin 6 on Arduino Uno;
-==Physical Project==
+===Electric Scheme===
-{{https://ocw.cs.pub.ro/courses/_media/pm/prj2023/avaduva/weatherstation.png?400x200}}
+{{https://ocw.cs.pub.ro/courses/_media/pm/prj2023/ws.png?800x400}}
+===Physical Project===
-===Software Design===
+{{https://ocw.cs.pub.ro/courses/_media/pm/prj2023/avaduva/weatherstation.png?300x200}}
-==How does BMP180 work==
+====Software Design====
+===How do the sensors work===
+==BMP180==
   - Sensing Principle: The BMP180 sensor uses a piezo-resistive pressure sensor to measure atmospheric pressure. It contains a microelectromechanical system (MEMS) pressure sensor that changes its resistance based on the applied pressure. The temperature is also measured using an integrated temperature sensor.
@@ Line 66: / Line 72: @@
-==How does DHT11 work==
+==DHT11==
   - Sensing Principle: The DHT11 sensor utilizes a capacitive humidity sensor to measure relative humidity (RH). It consists of two electrodes with a moisture-sensitive layer in between. The capacitance of this layer changes with the surrounding humidity, enabling RH measurement. Additionally, a thermistor (resistor that varies with temperature) is used to measure temperature.
@@ Line 76: / Line 82: @@
   - Data Processing: The microcontroller receives the humidity and temperature data from the DHT11 and converts it into meaningful values. The humidity data is typically a percentage value, while the temperature data can be in Celsius or Fahrenheit, depending on the implementation.
-==How does the LCD work==
+===Code Part===
+==BMP180==
+**1.** Library Initialization:
+Including the BMP180 library in the Arduino sketch by adding the library header at the beginning of the code.
+''#include <Adafruit_Sensor.h>''
+''#include <Adafruit_BMP085.h>''
+**2.** Sensor Initialization:
+Creating an object for the BMP180 sensor.
+''Adafruit_BMP085 bmp;''
+**3.** Initialization:
+In the ''setup()'' function of the Arduino sketch, initializing the sensor by calling the ''begin()'' function on the BMP180 object and checking if the sensor is working properly.
+''if (!bmp.begin()) {''
+''lcd.print("BMP180 error!");''
+''while (1);''
+ '' }''
+**4.** Reading Sensor Data:
+In the ''loop()'' function.
+ ''float temperature = bmp.readTemperature();''
+'' float pressure = bmp.readPressure() / 100.0;''
+==DHT11==
+**1.** Library Initialization:
+Include the DHT sensor library in the Arduino sketch by adding the library header at the beginning of the code.
+''#include <DHT.h>''
+**2.**Sensor Initialization:
+Define the DHT sensor type (DHT11) and the pin to which it is connected.
+''#define DHTPIN 2''
+''#define DHTTYPE DHT11''
+''DHT dht(DHTPIN, DHTTYPE);''
+where DHTPIN is the digital pin connected to the data pin of the DHT11, and DHTTYPE is set to DHT11.
+**3.** Initialization:
+In the ''setup()'' function of your Arduino sketch, initializing the DHT sensor by calling the ''begin()'' function on the DHT object.
+''dht.begin();''
+**4.** Reading Sensor Data:
+''float humidity = dht.readHumidity();''
+In the ''loop()'' function:
+==LCD==
 **1.** Library Initialization: Including the LCD library in the Arduino sketch by adding the library header at the beginning of the code.
@@ Line 99: / Line 178: @@
 ''lcd.print()'' to print text and the data from BMP180 and ''lcd.clear()'' to clear the display.
+====Results====
+{{https://ocw.cs.pub.ro/courses/_media/pm/prj2023/weatherstation.jpg?200x275}}
+====Download====
+{{https://ocw.cs.pub.ro/courses/_media/pm/prj2023/weatherstation.rar}}
+====Bibliography and Sources====
+https://www.alldatasheet.com/datasheet-pdf/pdf/1132068/BOSCH/BMP180.html
+https://html.alldatasheet.com/html-pdf/1440068/ETC/DHT11/60/1/DHT11.html
+https://github.com/sparkfun/SparkFun-Eagle-Libraries
+https://github.com/danwahl/eagle-libraries
+https://github.com/adafruit/Adafruit-Eagle-Library
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