I tweeted the illuminance of the room with Raspberry Pi, Arduino and optical sensor

I will explain how to create a system that acquires the brightness of the room using Arduino and an optical sensor and tweets the information acquired from the Raspberry Pi.

The code is posted on GitHub. https://github.com/Choke222/Arduino_RaspberrPi

Things necessary

• Raspberry Pi
• Arduino --CdS element --Resistance (10kΩ) --Twitter account

Preparation

--Creating a Twitter application

In order to link Rasbery Pi and Twitter, you need to create a Twitter application. Specifically, the following four pieces of information are acquired.

1. Consumer key
2. Consumer secret
3. Access token
4. Access token secret

Reference site: Creating a Twitter application (Consumer key, Consumer secret, Access token, Access token secret confirmation method) % E3% 83% AA% E3% 82% B1% E3% 83% BC% E3% 82% B7% E3% 83% A7% E3% 83% B3% E3% 81% AE% E4% BD% 9C% E6 % 88% 90% EF% BC% 88consumer-key% E3% 80% 81consumer-secret% E3% 80% 81access-token% E3% 80% 81access-token-secret /)

--Install the package on python on Raspberry Pi

sudo apt-get update
sudo apt-get install python-setuptools
sudo easy_install pip #Install pip command
sudo pip install twython #Install twython with pip command

--Circuit creation

Created using a CdS element and a 10kΩ resistor. Reference site: Illuminance sensor circuit

Arduino side

--The illuminance acquired by the CdS element is output to the serial monitor.

arudino_cds.ino

int pin = 0; //Sensor pin number
int get_a0 = 0; //Sensor data acquisition
int flag = 0;
int s=0;
void setup(){
  Serial.begin(9600);

}

void loop()
{

  get_a0 = analogRead(pin); //Get data from illuminance sensor
  s = 0;
  Serial.println(s); //Output to serial monitor
  if ( get_a0 <= 200 ) {
    if(flag == 0){
      s = 1000;//OFF!
      Serial.println(s); //Output to serial monitor
    }
    flag=1;
  } else if ( get_a0 > 200 ) {
    if(flag == 1){
      s = 2000;//ON
      Serial.println(s); //Output to serial monitor
    }
    flag=0;
  }
  delay(200);
}

Raspberry Pi side

--Various imports

tweet_cds.py

import serial
import time
import os
from twython import Twython

--Twitter API settings

tweet_cds.py

#print('Enter your twitter credentials')
CONSUMER_KEY = 'xxxxxxxxxxxxxxxx'
CONSUMER_SECRET = 'xxxxxxxxxxxxxxxx'
ACCESS_KEY = 'xxxxxxxxxxxxxxxx'
ACCESS_SECRET = 'xxxxxxxxxxxxxxxx'
api = Twython(CONSUMER_KEY,CONSUMER_SECRET,ACCESS_KEY,ACCESS_SECRET)

--Settings for serial communication with Arduino

tweet_cds.py

#print('Start serial communication')
ser = serial.Serial('/dev/ttyACM0', 9600)

--Get illuminance data from Arduino and tweet

tweet_cds.py

while 1:
	data = ser.readline()#Read data from Arduino

	data2 = int(data)#Convert to int type
	print('Room lighting monitoring' + time.ctime() + ',' + 'Lighting situation' + ',' + str(data))
	#Tweet the acquired illuminance information
	if data2 == 2000:
		print('The lights are on!')
		api.update_status(status= time.ctime()+'Good morning!')
		time.sleep(1)
	elif data2 == 1000:
		print('The electricity is off!')
		api.update_status(status= time.ctime()+'good night')
		time.sleep(1)

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