Interfacing 433MHz RF Modules with 8051 Microcontroller

Hello Friends Today I am going to show you how to use a 433MHz RF module in your 8051 Projects. The 433MHz RF module is one of the cheapest ways of wireless communication other than IR that you can use in your 8051 projects.There is a receiving and Transmitting module that we will need. You can easily find them online for3-4$(150-200 Indian Rs).

Components required

  • Microcontroller (P89V51RD2) (2)
  • Resistor 10K (1)
  • Capacitor 33pF (2)
  • Capacitor 10uF (1)
  • 11.0592MHz Crystal (1)
  • 433MHz RF Transmitter (1)
  • 433MHz RF Receiver (1)
  • Buzzer(optional) (1)

Circuit Diagram and Description

Receiving circuit
Receiving circuit
Transmitting Circuit
Transmitting Circuit

Connections of the Transmitter Module:

The smaller module of the two with a crystal on it is the Transmitter module. The Pin connections for the module are as below

Pin on Module            Connection

GND               GND on 8051 Board

DATA             P3.1 on 8051 Board

Vcc                  Vcc on 8051 Board

ANT                Connected to 17.25cm long wire

Connections for the Receiver Module:

The Larger module of the two is the Receiver module.The Module has multiple GND and Vcc pins which need to be connected externally. The Pin connections for the module are as below

Pin on Module            Connection

GND              GND on 8051 Board

DATA            P3.0 on 8051 Board

Vcc                 Vcc on 8051 Board

ANT               Connected to 17.25cm long wire

About the Program

In this particular program, we are using UART to transmit 8-bit data over the RF module. The data pin of the transmit module is connected to the transmit pin of the 8051. When the Switch 4 is pressed on the 8051 Board then the ASCII value of character t is sent over the RFmodule.If this is received at the receiving 8051 then the Buzzer will turn on for 5 Seconds.

Download: Click here to download the C, Assembly and Hex file.

This article is written by Aditya Wani.

I hope you liked this microcontroller project. If you have any queries feel free to ask in the comment section below. Like our facebook page and subscribe to our newsletter for future updates. Hava a nice day!

Accidental Vehicle Lifting Robot – Mini Project

Nowadays number of road accidents increasing frequently. Whenever vehicle accident occurs on the road there may be high possibility of traffic. In such cases if we could able to move that accidental vehicle from road, we can easily avoid the traffic. To make this possible we can built an accidental vehicle lifting robot using embedded system. You can built its prototype using small vehicle which you can easily found in toy store.

Accidental Vehicle Lifting Robot

Accidental Vehicle Lifting Robot

Working of Accidental Vehicle Lifting Robot

The working of this project is based on microcontroller which is connected to a motor to move the accidental vehicle. Also microcontroller is connected to a chain based rod to lift the vehicle.

The complete circuitry of this project contains microcontroller board which has robotic platform, keypad, electric motors to move the vehicles and lifting the chain based rod. These motors will be moved accordingly to the instruction given through keys connected to microcontroller.

Components required:


  • AT89c52
  • Robot platform
  • Driver circuit
  • Motor for lifting
  • Controlling keys
  • 12 v battery


  • Embedded ‘C’
  • RIDE/KEIL to write code
  • ISP to burn the chip

Advantages Accidental Vehicle Lifting Robot:

  • Low cost
  • automated operation
  • Low Power consumption

I hope you liked this project idea. Please like our facebook page and subscribe to our newsletter for upcoming projects. If you have any queries feel free to ask in comment section below. Have a nice day!

Vehicle Tracking Using Microcontroller & GPS Module

Hi friends, In this project we are going to make a Vehicle tracking system using 8051 microcontroller and GPS module. You can use this project for you final year submissions which cost you around 2500Rs. This is quite interesting and useful project in our day to day life.

We can easily tack lost vehicle using this Vehicle tracking GPS module. In this project we are using 8051 microcontroller, GPS module to track the vehicle location. This system will send a location of vehicle in the form of longitude and latitude values. If you enhance this project you can also easily track the position of vehicle in the graphical presentation on your PC.

Vehicle Tracking Using Microcontroller and GPS Module


The main objective behind developing this project is to track the vehicle position using microntroller GPS module & Zigbee module along with software to see the track of vehicle on PC.

Block Diagrams:

1) Connecting GPS with ZigBee:

Connecting GPS and Zigbee

2) Vehicle Tracking Block Diagram:

Vehicle Tracking Block Diagram

3) Power supply for Vehicle Tracking Circuit:

Power Supply


In this project we using AVL technology. AVL stands for Automatic Vehicle Location. AVL is an advanced method to track and monitor any vehicle which is connected with Vehicle tracking circuit.AVL is a combination of GPS (Global Positioning System) and GIS (Geographic Information SYstem). All data transmission in this project depends on GPS satellite and receiver on the board and Zigbee.

There are planty of tutorials availbel in Internet on how to connect Zigbee with your GPS module. Once you integrate Zigbee and GPS connect your circuit with Microcontroller. You can refer this article on how to connect GPS with 8051 microcontroller.


For building this Vehicle tracking system you will need Embedded C knowledge, RIDE to write code and ISP to burn the chip.


  • 8051 microcontroller kit
  • power supply
  • Zigbee module
  • GPS module

I hope you liked this project. Feel free to ask any questions in comment section below. Please like our facebook page and subscribe to our newsletter for future updates.

Digital clock using 8051 microcontroller & LCD display – mini project

Hello friends, today we are going to make a simple digital clock using 8051 microcontroller which you can make as your engineering mini-project. In this mini project we are using one 8051 family based microcontroller, one 16×2 LCD display and one 4×4 keyboard for settling the time.

Components required:

For making simple digital clock using microcontroller you will require following components:

Sr. no. Component Quantity
1 Microcontroller (P89V51RD2) 1
2 LCD display (16×2) 1
3 4×4 keyboard 1
4 Resistor 10K 1
5 Capacitor 33pF 2
6 Capacitor 10uF 1
7 12MHz Crystal 1

Circuit diagram:

A circuit diagram for simple digital clock using 8051 microcontroller is shown below:

digital clock using 8051 microcontroller and LCD display

Circuit building:

Connect the 4×4 keypad with port 1 of microcontroller. Connect 16×2 LCD display with port 2 of microcontroller (make sure that all the data pins of LCD display are connected to the microcontroller correctly). The rs (register set) pin of  LCD is connected to pin 3.5 (pin number: 15) and en (enable) pin is connected to pin 3.6 (pin number 16) of microcontroller. Connect crystal to pin 18 and 19 of micro controller. We are using 12MHz frequency Crystal. For reset circuitry connect a push button to pin 9 of micro controller. We can also use a potentiometer to adjust the contrast of LCD.

Pin description of LCD display:

lcd pin diagram

Pin number Name Description
1 Vss Ground
2 Vdd +5V
3 Vee Contrast Adjustment ‐2V to ‐5V
4 RS Register Select
5 RW 1 ‐Read , 0‐Write
6 E Enable Strobe
7 D0 Data Line
8 D1 Data Line
9 D2 Data Line
10 D3 Data Line
11 D4 Data Line
12 D5 Data Line
13 D6 Data Line
14 D7 Data Line
15 LED+ Backlit LED +V Vdd (Optional signal)
16 LED- Backlit LED +V Vdd (Optionalsignal)


You can download C program and HEX file for this mini project using following link.


You may also like:

I hope you liked this microcontroller project. Share it with your friends and like our facebook page to keep in touch with us. Have a nice day!

Final year engineering projects list – 3

List of final year engineeeirng projects (List-3)

Final year engineering projects
Final year engineering projects

Here are another list of some innovative and useful final year engineering projects for final year engineering students. These projects are provided to engineering students for their project preparation. you can download any project which you like by just clicking on the link. 

To see the previous list of final year engineering projects click here.

List no:1

List no:2

101. Construction of touch panel based portable digital clock

102. Vision based obstacle avoidance and target tracking for autonomous mobile robot

103. Zigbee based intelligent helmet for coal mines

104. Design lk development of a gsm based vehicle theft control system

105. Artificial vision systems for blind man

106. Remotely controllable outlet system for home power management trough pc

107. Pc controlled spy robot using wireless webcam

108. Microcontroller based automatic pre paid electronic bus fare system

109. Electronic medical record for effective patient monitoring database

110. A prototype of an integrated blood pressure and electrocardiogram device for multi-parameter physiologic monitoring

111. A robot motion authoring using finger-robot interaction

112. Development of intelligent power wheelchair assisting for people on daily life using motion recognition

113. Remote home security system based on wsn and gsm technology

114. High heart beat alert to doctors using pom and gsm modem via short message

115. Remote notice board implementation using gsm communication

116. Application study of mine alarm system based on zigbee technology

117. Icu patient monitoring system with automatic sms system using gsmzigbee wireless technology.

118. Mems based automatic wheel chair movement for paralyses patient’s old age people.

119. Obstacle detecting system for vehicle collision safeguard

120. Finger print based money management system for atm backend operations.bus

121. Intelligent touch panel based access control mechanism for ubiquitous applications

122. Cost effective wireless attendance and access control system

123. Finger print based atm lk locker system for modern ban.

124. Smart wireless temperature data logger using zigbee 802.15.4

125. Dtmf mobile phone controlled dam water gates controlling system with high-level protection

126. Traffic signal light intelligent control system based on microcontroller

127. Intelligent fleet management system with concurrent gps lk gsm real time positioning technology

128. Automated vehicles for physically and visually challenged

129. Autonomous street lighting system based on solar energy and led’s

130. Monitoring of an aeroponic greenhouse with a sensor network,

131. Home automation using zigbee

132. Automatic street light controller with rtc

133. Density based traffic light control sytem

134. Dtmf based load automation

135. Embedded finalized list 2012

136. Fingerprint based bank locker system

137. Gps data logger

138. Gsm based advance home security system

139. Gsm based notice board with lcd display

140. Gsm based wireless electronic notice board

141.0bstacle detection and avoidance robot

142. Pc based wireless temp data logger

143. Pc controlled robotic arm control

144. Rf based load automation

145. Rf robot

146. Rfid based security system

147. Servo motor control system

148. Smart car parking system using microcontroller

149. Traffic light priority control system

150. Ultrasonic proximity detector abstract

151. Visitor counter

Previous list of projects

To see the previous list of final year engineering projects click here.



Search topics: engineering projects, instrumentation engineering projects, electronics engineering projects, electrical engineering projects.

Final year engineering projects list – 2

List of final year Engineering projects (List – 1):

Final year engineering projects
Final year engineering projects

We have already published 50 projects for final year engineering students in the last article. If you want to check that list click here

I am going to publish another 50 projects with abstracts for all final year engineering students which will help you in making your projects. Click on the link provided with the project list to download project.

51. Centralized secured voting system using finger print sensor

52. Vehicle supervision system based on mems geo sensor

53. Automatic college ringing bell management system using i2c protocol

54. Vehicle emission monitoring system using wireless technology

55. Automatic accident identification alert system using vibration sensor and rf technology

56. Examination room guide using rfid for the jumbling system based exams

57. Wi-fi based data acquisition system using rabbit processor

58. Advanced atm security system using gsm& mems

59. Zigbee based vehicle access control system

60. Remote weather station design using zigbee

61. Under water wireless control and transmission system based zigbee

62. Ethernet (web) based data acquisition and controlling and display on pc

63. Remote controllable and energy-saving room architecture based on zigbee communication

64. Applications of wireless sensor networks in the oil, gas and resources industries

65. Human recognition using rfid technology and stereo vision

66. Touch panel based advanced home automation system for next generation apartments using zigbee

67. Authentication and access control system for security personnel using i-button

68. Rfid based automatic highway toll tax collection system

69. Touch screen based digital slate for next generation elementary school children

70. Incomparable and intelligent traffic control system using ir and gsm

71. Touch panel based nurse attendant calling system for physically impaired

72.  Zigbee based attendance alert system with person details by using i-button technology

73. Electronic voting machine by using rabbit processor

74. Boarding school students monitoring systems (e-id) using radio frequency identification.

75. High secured password protected door accessing system using touch panel

76. An electronic voting system through touch screen interface

77. An automated stock price delivery system based on the gsm short message service

78. Gsm based prepaid energy meter for electrical applications.

79. Authorized home appliances control with i-button

80. Safety parsel courier system

81. Microcontroller based finger print access developed voting machine

82. Continuous indoor navigation with rfid and ins

83. Microcontroller and touch panel based wireless library book catalog system

84. Safety of valuable items by using zigbee and mems sensor

85. Two-way wireless data messaging system for rural areas using zigbee technology

86. Automatic detection of train arrival through an accelerometer using rf

87. Security integrated system based on wireless access protocol for industrial applications with sms alert system using gsm modem.

88. Messenger development without internet using zigbee

89. Deploying zigbee sensor network for vibration measurement

90. Autonomous light control by wireless sensor and actuator networks

91. Automated exam entry cancellation to the students who are late for the examination

92. Touch panel controlled motor speed and direction control system

93. The application of wireless sensor network design based on zigbee in petrochemical industry field

94. Metal detector robot control using zigbee

95. Remote sensing and control of an irrigation system using distributed wireless network

96. Automatic gsm sms passage to the parents if the student’s attendance is less than the required level using rfid technology

97. Wireless electronic notice board with multi nodes using zigbee communication system.

98. Remote monitoring system for oil wells based on gsm gprs technology

99. Password operated device control using mobile communication

100. Accelerometer based free fall or anti-slippage protection for hdd



Tags: list of engineering projects, list of engineering projects for engineering students, list of computer engineering projects.

DTMF based load control system – Engineering mini project

DTMF based load control system (or home automation)


This project works on the principle of DTMF (Dual tone multi frequency). This circuit can be used to control or on/off the load i.e. electric equipments like fan, bulb, water pump, etc.

We know that, in industries loads are distributed over large distances, and it is not convenient to operate all those equipments time to time and it is also time consuming.

Also in agricultural fields water pumps and other electric systems are spread over large area and it is hard to operate these systems to farmers. We can use this circuit in home too, therefore this can also be called as DTMF based home automation project. Keeping all these problems in mind, a DTMF based load control system is designed as follows.

In DTMF based load control system, a cell phone (mobile) is connected to the circuit from its audio output (audio jack) to receive the tone generated by the operator mobile. Whatever audio signal (in the form of frequency) is received from mobile then decoded (to its digital code) by the use of DTMF decoder which is one of the main part of the project. Then this digital code goes to 8051 microcontroller which on/offs respected relay to control that electric equipment. a relay driver IC is interfaced with the microcontroller to actuate the relays.

Components required:

Sr. no Equipment Quantity
1 IC 8051 MC 1
2 MT 8870 DTMF IC 1
3 Crystal (3.579545mhz) 1
6 CRYSTAL OSCILLATOR(11.0592mhz) 1
9 LEDS 4
10 RESISTER(220Ω,4.7kΩ,10kΩ) BOX
11 CAPACITORS(10uf,1000uf) 5
13 Bc547 2
DTMF based load control system block diagram
DTMF based load control system block diagram
DTMF based load control system circuit diagram
DTMF based load control system circuit diagram

Software requirements: Kiel compiler

Languages: Embedded C or Assembly

DTMF IC (MT 8870) Pin configuration:

MT 8870 pin diagram
MT 8870 pin diagram

You may also like:

Tags: DTMF based load control system, DTMF based home automation system engineering project, Mobile cellphone based load control system, Mobile cellphone based industrial automation project.