1. GUIDED BY: MR. HARSHAL NIKAM SIR
PRESENTED BY:
ASHISH SADAVARTI
MICROPROJECT SEMINAR ON
TITLE:-BUILD A ROOM TEMPERATURE MEASURMENT
CIRCUIT USING MICROCONTROLLER
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

2. 1) AIM AND OBJECTIVE
2) INTRODUCTION
3) COURSE OUTCOME
4) PROGRAM OUTCOME (PO) ACHIEVED
5) DIAGRAM
6) WORKING / PROCEDURE
7) RESOURCES USED
8) APPLICATIONS
9) SKILL DEVELOPED
10) CONCLUSION
11) REFERENCES
CONTENTS
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

3. AIM AND OBJECTIVE
 Understand the actual working of temperature sensor.
 Develop basic technical knowledge different temperature
sensor.
 Identify different component use in circuit with pin
configuration.
 We should be able to test the output for different input.
 Correct the error as per defect.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

4. INTRODUCTION
 Temperature sensors are widely used in electronic
equipment to display the temperature.
 You can see the digital clock displaying the room
temperature value.
 It is due to the temperature sensor embedded in it.
 In this project, I will show you how to design a Digital
Temperature Sensor Circuit.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

5. COURSE OUTCOME
 Understand the features of microcontroller 8051.
 develop the skill to construct and Mount component on
PCB.
 Know the different sensor of temperature measurement.
 apply the knowledge to build the circuit carefully.
 troubleshoot specified application using various IC like
8051 and etc.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

6. PROGRAM OUTCOME (PO) ACHIEVED
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)
CO’S
MAPPED
PO’S MAPPED
CO’S PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10
CO1 1 3 3 2 1 1 - 3 3 3
CO2 1 3 1 3 1 1 - 3 2 2
CO3 1 3 1 3 1 2 - 3 3 1
CO4 1 3 3 3 2 1 - 3 2 1
CO5 1 3 2 2 1 1 - 3 3 3

7. CIRCUIT DIAGRAM OF ROOM
TEMPERATURE CONTROLLER
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

8. APPLICATION
 Industrial Automation as well as home automation.
 To conserve the electrical power.
 Use in thermocoupling machines.
 Use in food processing machines.
 Use in packging machine.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

9. WORKING / PROCEDURE
 Lm35 temperature sensor will measure room analog
temperature and passes it adc0408 for analog to digital
conversion.
 89c51 microcontroller fetches temperature value from
adc0804 analog to digital converter.
 Temperature value is then displayed on a 16×2 lcd
interfaced with 89c51 microcontroller.
 I am not only displaying temperature value in Celsius on
16×2 lcd, but also converting it to Fahrenheit and
displaying the Fahrenheit temperature too on the 16×2 lcd.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

10. RESOURCES USED
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)
Sr.no resources specification quantity
1) Microcontroller 8051/89c51 1
2) ADC IC ADC0804 1
3) Temperature Sensor Lm35 1
4) Crystal Oscillator 12MHz 1
5) LCD Display 16*2 1
6) Capacitor 33pf 2
7) Capacitor 150pf,10uf/16v 1
9) Variable Resistor 10k 6
10) PCB 6”*4” 1
11) Power Supply 5v dc 1amp 1

11. SKILL DEVELOPED
 Complex problem-solving skills and a methodical
mind.
 Critical thinking.
 Strong interest in technology.
 Aptitude for maths.
 Communications skills.
 Strong IT skills.
 Time management and an ability to prioritise and
plan work effectively.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

12. CONCLUSION AND REFERENCES
 https://www.engineersgarage.com/8051-
microcontroller/room-temperature-with-89c51-
microcontroller/
 http://www.circuitstoday.com/interfacing-adc-to-8051
 https://www.youtube.com/watch?v=cq4ZOLy9n0k
 microcontroller and applications book
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

13. THANK YOU
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)