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This project is on light sensing.I have used a ldr sensor and trained it keeping it in a dark room.If the ldr senses any light intensity above the threshold then the buzzer rings and using twilio api message is sent to the warden.
Circuit
The ldr is connected to A0 pin and 3.3V,
resistor is connected to A0 pin and ground.
buzzer positive to GPIO 1 and negative to ground.
resistor is connected to A0 pin and ground.
buzzer positive to GPIO 1 and negative to ground.
step 3
Now you have to create a twirlo account so that sms can be sent informing us about the anomaly.
Go to app.twirlo.com and create an account.
Go to the Domain and note down all the credentials, save it in another file.
Step 4:
Using Ubuntu create a file named conf.py to store all the API key, secret tokens and Bolt number which you will later use in the code.
Keeping the Bolt module with the circuit connections done in the refrigerator for about 2 hours you can find the minimum and maximum temperature of the fridge. Using this temperature range we get the threshold values for our program. When you click on view the device button a graph is plotted. Save the data in an excel sheet and find the minimum and maximum intensity.
Now write the python code in ubuntu and it is shown in the following figure. In this code we have written 2 functions named computebounds and anomaly. This code will send the sms when the intensity crosses the threshold or when there is an anomaly. Z-score analysis is done to find the anomaly.
Go to app.twirlo.com and create an account.
Go to the Domain and note down all the credentials, save it in another file.
Step 4:
Using Ubuntu create a file named conf.py to store all the API key, secret tokens and Bolt number which you will later use in the code.
Keeping the Bolt module with the circuit connections done in the refrigerator for about 2 hours you can find the minimum and maximum temperature of the fridge. Using this temperature range we get the threshold values for our program. When you click on view the device button a graph is plotted. Save the data in an excel sheet and find the minimum and maximum intensity.
Now write the python code in ubuntu and it is shown in the following figure. In this code we have written 2 functions named computebounds and anomaly. This code will send the sms when the intensity crosses the threshold or when there is an anomaly. Z-score analysis is done to find the anomaly.
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