LED BLINKING USING ARDUINO
CODE:
void setup()
{
pinMode(12, OUTPUT);
}
void loop() {
digitalWrite(12, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(12, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
TEMPERATURE AND HUMIDITY SENSOR TO ARDUINO
CODE:
#include <dht11.h> #define DHT11PIN 4 dht11 DHT11;
void setup()
{
Serial.begin(9600);
}
void loop()
{
Serial.println();
int chk = DHT11.read(DHT11PIN);
Serial.print("Humidity (%): "); Serial.println((float)DHT11.humidity, 2); Serial.print("Temperature
(C): "); Serial.println((float)DHT11.temperature, 2);
delay(2000);
}
OUTPUT SCREENSHOT:
IR SENSOR TO ARDUINO
CODE:
int IRSensor = 2;
int LED = 13;
void setup()
{
pinMode (IRSensor, INPUT);
pinMode (LED, OUTPUT);
}
void loop()
{
int statusSensor = digitalRead (IRSensor);
if (statusSensor == 1)
{
digitalWrite(LED, LOW);
}
else
{
digitalWrite(LED, HIGH);
}
}
ARDUINO TO LCD
CODE:
#include<LiquidCrystal.h>
const int rs=8, en=9,d4=10,d5=11,d6=12,d7=13;
LiquidCrystal lcd(rs,en,d4,d5,d6,d7);
void setup() {
lcd.begin(16,2);
lcd.print("KGR");
}
void loop() {
lcd.setCursor(0,1);
lcd.print("JANA");
}
BLOCK DIAGRAM:
ARDUINO TO ZIGBEE MODULE
CODE:
ZIGBEE_RECIVER:
#include<SoftwareSerial.h>
int led = 6;
int received = 0;
int i;
SoftwareSerial zigbee(2,3);
void setup()
{
Serial.begin(9600);
zigbee.begin(9600);
pinMode(led, OUTPUT);
}
void loop()
{
if (zigbee.available() > 0)
{
received = zigbee.read();
if (received == '0')
{
Serial.println("Turning off LED");
digitalWrite(led, LOW);
}
else if (received == '1')
{
Serial.println("Turning on LED");
digitalWrite(led, HIGH);
}
}
}
ZIGBEE_TRANSMITTER:
#include "SoftwareSerial.h"
SoftwareSerial XBee(2,3);
int BUTTON = 5;
void setup()
{
Serial.begin(9600);
pinMode(BUTTON, INPUT_PULLUP);
XBee.begin(9600);
}
void loop()
{
if (digitalRead(BUTTON) == HIGH )
{
Serial.println("Turn on LED");
XBee.write('1');
}
else if (digitalRead(BUTTON) == LOW )
{
Serial.println("Turn off LED");
XBee.write('0');
}
}
GSM
CODE:
#include <SoftwareSerial.h> SoftwareSerial mySerial(9, 10);
void setup()
{
mySerial.begin(9600); // Setting the baud rate of GSM Module
Serial.begin(9600); // Setting the baud rate of Serial Monitor (Arduino)
delay(100);
}
void loop()
{
if (Serial.available() > 0)
{
switch (Serial.read())
{
case 's':
SendMessage(); break;
case 'd':
DialCall(); break;
}
}
if (mySerial.available() > 0)
{
Serial.write(mySerial.read());
}
}
void SendMessage()
{
mySerial.println("AT+CMGF=1"); // Sets the GSM Module in Text Mode
delay(1000); // Delay of 1000 milliseconds or 1 second
mySerial.println("AT+CMGS=\"+xxxxxxxxxxx\"\r"); // Replace x with mobile number
delay(1000);
mySerial.println("I am SMS from GSM Module"); // The SMS text you want to send
delay(100);
mySerial.println((char)26); // ASCII code of CTRL+Z delay(1000);
}
void DialCall()
{
mySerial.println("ATD+xxxxxxxxxxxx;"); // ATDxxxxxxxxxx; -- watch out here for semicolon at
the end!!
delay(100);
}
BLUETOOTH
CODE:
#define ledPin 12
int data = 0;
void setup()
{
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);
Serial.begin(9600);
}
void loop()
{
if(Serial.available() > 0)
{
data = Serial.read();
if (data == '0')
{
digitalWrite(ledPin, LOW);
Serial.println("LED: OFF");
}
else if (data == '1')
{
digitalWrite(ledPin, HIGH);
Serial.println("LED: ON");
}
}
}
OUTPUT:
LED BLINK RASPBERRY PI
CODE:
import RPi.GPIO as GPIO
import time
# Set the GPIO mode to BCM
GPIO.setmode(GPIO.BCM)
# Set the GPIO pin to an output
LED_PIN = 17
GPIO.setup(LED_PIN, GPIO.OUT)
try:
while True:
# Turn the LED on
GPIO.output(LED_PIN, GPIO.HIGH)
time.sleep(1) # 1 second delay
# Turn the LED off
GPIO.output(LED_PIN, GPIO.LOW)
time.sleep(1) # 1 second delay
except KeyboardInterrupt:
# Clean up GPIO settings on keyboard interrupt
GPIO.cleanup()
IR SENSOR AND DHT 11 RASPBERRY PI
CODE:
IR Sensor:
import RPi.GPIO as gpio
from time import sleep
gpio.setmode(gpio.BOARD)
gpio.setup(36, gpio.IN) # Raspberry pi 4 -GPIO16
while True:
sensor=gpio.input(36)
if sensor==1:
print(" not detect")
sleep(0.1)
elif sensor==0:
print(" detect")
DHT11 Sensor:
import time
import board
import adafruit_dht
dhtDevice = adafruit_dht.DHT11(board.D4, use_pulseio=False) ## Raspberry pi 4 - gpio4
while True:
try:
# Print the values to the serial port
temperature_c = dhtDevice.temperature
temperature_f = temperature_c * (9 / 5) + 32
humidity = dhtDevice.humidity
print(
"Temp: {:.1f} F / {:.1f} C Humidity: {}% ".format(
temperature_f, temperature_c, humidity
)
)
except RuntimeError as error:
# Errors happen fairly often, DHT's are hard to read, just keep going
print(error.args[0])
time.sleep(2.0)
continue
except Exception as error:
dhtDevice.exit()
raise error
time.sleep(2.0)
OUTPUT SCREENSHOT:
IR Sensor:
DHT11 Sensor:
ARDUINO WITH RASPBERRY PI
RASPBERRY PI CODE:
import serial
import time
bluetooth=serial.Serial("/dev/rfcomm7",9600)
while True:
a=input("enter:-")
string='X{0}'.format(a)
bluetooth.write(string.encode("utf-8"))
ARDUINO CODE:
Int led=13;
Void setup()
{
pinMode(led, OUTPUT);
Serial.begin(9600); //default baud rate for bt 38400
}
Void loop()
{
If(Serial.available())
{
Int a=Serial.parseInt();
Serial.println(a);
If (a==1)
{
digitalWrite(led, HIGH);
}
If (a == 0)
{
digitalWrite(led, LOW);
}
}
}
IoT BASED SYSTEM
#include <DHT.h> // Including library for dht
#include <ESP8266WiFi.h>
String apiKey = "ZF25J6EFQ69A1HLH"; // Enter your Write API key from ThingSpeak
const char *ssid = "ANAND"; // replace with your wifi ssid and wpa2 key
const char *pass = "PASSWORD";
const char* server = "api.thingspeak.com";
#define DHTPIN 4 //pin where the dht11 is connected pin no D2
DHT dht(DHTPIN, DHT11);
WiFiClient client;
void setup()
{
Serial.begin(115200);
delay(10);
dht.begin();
Serial.println("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
void loop()
{
float h = dht.readHumidity();
float t = dht.readTemperature();
if (isnan(h) || isnan(t))
{
Serial.println("Failed to read from DHT sensor!");
return;
}
if (client.connect(server,80)) // "184.106.153.149" or api.thingspeak.com
{
String postStr = apiKey;
postStr +="&field1=";
postStr += String(t);
postStr +="&field2=";
postStr += String(h);
postStr += "\r\n\r\n";
client.print("POST /update HTTP/1.1\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);
Serial.print("Temperature: ");
Serial.print(t);
Serial.print(" degrees Celcius, Humidity: ");
Serial.print(h);
Serial.println("%. Send to Thingspeak.");
}
client.stop();
Serial.println("Waiting...");
// thingspeak needs minimum 15 sec delay between updates
delay(500);
}
