Room Temperature Buzzer

The buzzer buzzes whenever the room temperature crosses the threshold value.

BeginnerFull instructions provided30 minutes494

Things used in this project

Hardware components

Bolt IoT Bolt WiFi Module

Buzzer

Jumper wires (generic)

Male/Female Jumper Wires

Temperature Sensor

Breadboard (generic)

Story

Description

Ever wondered of an device which can intimate you about the rise of temperature in your room through a sound. Here is a device that you can make using BOLT Wifi module.

Working

You should include the Threshold value in the code. Whenever the room temperature crosses the threshold value that is assigned by you, the buzzer start buzzing. The LM35 sensor is used to detect the temperature of the room.

The temperature is calculated using the following formula

Temperature = (100*sensor_value)/1024

Components Required

Procedure to be followed

STEP-1

Make sure that the LM35 sensor is connected exactly as shown in the picture below that is LM35 written on it should be facing you, the left most pin is the VCC followed by output and Gnd. Connect them to the Bolt Wifi module using male to female wire.

The VCC should be connected to 5V of the BOLT Wifi module
The Output pin (Middle pin) should be connected to the A0 of the BOLT Wifi module.
For 3rd pin connection go to STEP-3

STEP - 1

STEP - 2

Connect the buzzer to the bread board as shown below

STEP - 2

STEP-3

Now using the male to male wires connect the Bolt Wifi Module to the bread board.

The 0 should be connected to the positive terminal of the buzzer through the bread board.
The negative terminal of the buzzer should be connected to the Gnd through the bread board.
The Gnd pin of the LM35 sensor must be connected to the bread board where the negative terminal of the buzzer is present.(THEY SHOULD LIE IN THE SAME LINE)

STEP - 3

Project in action

Do watch the video

NOTE : MAKE SURE TO GIVE THE THRESHOLD VALUE IN THE PYTHON CODE.(I HAD GIVEN as 25 IN THE CODE)

Code

CODE

from boltiot import Bolt
import json, time
import conf


mybolt = Bolt(conf.API_KEY, conf.DEVICE_ID)

while True:
    print("sensor value")
    response = mybolt.analogRead('A0')
    data = json.loads(response)
    print ("Sensor value is: " + str(data['value']))
    sensor_value = int(data['value'])
    print ("Sensor: " + str(sensor_value))
    Temperature = (100*sensor_value)/1024
    print("Temperature value is:" + str(Temperature))
    if Temperature > 25:
              response = mybolt.digitalWrite('0', 'HIGH')
    else:
              response = mybolt.digitalWrite('0', 'LOW')
    time.sleep(5)

Credits

Bhanu Teja

1 project • 0 followers

Room Temperature Buzzer