Material Required:
Microcontroller 89C051
LCD display 16*2 matrix
Keys matrix
Stepper Motor
Wood or ply
Crystal 3.58Mhz
Resistance 220 ohm
Capacitor 0.01 micro farad
Keyboard general or push to on Button
DIP switches
Connecting wires
Microcontroller programming kit
12v supply
copper clad board
Ferric chloride
Marker
Computer
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1. DIGITAL COMBINETION LOCK
2. SAFETY GUARD FOR THE BLIND (PROXIMITY BASE)
3. LIGHT COTROLLED DIGITAL FAN REGULATOR
4. LOW-COST ENERGY METER USING ADE 7757
5. HOME AUTOMATION AND SECURITY CONTROL INTERFACE WITH TELEPHONE
6. LINE TRACKING ROBOT/MOUSE
7. REMOT CONTROLLED STEPPER MOTOR
8. ULTRASONIC SWITCH
9. DEVICE SWITCHING USING PASSWORD
10. SPEED CHECKER FOR HIGHWAYS
11. ULTRASONIC PROXIMITY DETECTOR
12. ULTRASONIC MOVEMENT DETECTOR
13. VEHICLE SEED MEASUREMENT CONTROL PC BASED
14. SMART CARD FOR ENTRY EMPLOY
15. SECURITY ACCESS CONTROL SYSTEM
16. RADAR SYSTEM
17. PRI-PAID ENERGY METER
18. PRI-PAID CAR PARKING SYSTEM
19. ULTRASONIC DISTANCE METER
20. DATA SECUIRTY SYSTEM
21. DESIGN OF A BUS STATUS IDENTIFICATION SYSTEM
22. CALLING NUMBER IDENTIFICATION USING CALCULATOR
23. OPTICAL REMOT SWITCH
24. LOAD PROTECTOR WITH REMOTE SWITCHING
25. DISITAL WEIGHT ACCUMULATOR
26. REMOT CONTROLLED LAND ROVER
27. TELEPHONE ANSIRING MATCHING
28. AUTO CAR PARKING
29. AN INTELLIGENT AMBULANCE CAR WHICH CONTROL TO TRAFFIC LIGHT
30. WATCHMAN ROBOT
31. SUN SEEKER
32. AUTO BRAKING SYSTEM
33. TOUCH SCREEN
34. DTMF REMOTE CONTROL SYSTEM
35. AUTOMATIC RAILWAY CROSSING GATE CONTROLLER
36. HOME SECURITY SYSTEM WITH SENDING MESSAGE ON OUR CELL PHONE
37. FASTED FINGER FIRST
38. MOBILE CONTROL ELECTRICAL APPLIANCES
39. RF CONTROL ELECTRICAL APPLIANCES
40. MIND READER
41. DIGITAL COMBINATION LOCK
42. SAFETY GUARD FOR THE BLIND
43. DIGITAL SPEEDOMETER
44. RADIO CONTROLLED REMOTE CONTROL
45. MICRO PROCESSOR-BASED DC MOTOR SPEED CONTROL
46. 31/2 DIGIT VOLTMETER WITH LED
47. 31/2 DIGIT VOLTMETER WITH LCD
48. 31/2 DIGIT THERMOMETER
49. DTMF 5-CHANNEL SWITCHING VIA POWER LINE
50. DEVICE SWITCHING USING PASSWORD
51. LASER-BASED COMMUNICATION LINK
52. VIOCE & DATA COMMUNICATION WITH FIBER LINK
53. BUDGET DIGITAL OSCILLOSCOPE
54. WIRELESS HOME SECURITY
55. BEND STOP FILTER
56. A VERSATILE FUNCTION GENERATOR
57. DIGITAL DOOR BELL
58. TRANSFORMER LESS 12V DUAL POWER SUPPLY
59. INFRARED BURGLAR ALARM WITH TIMER
60. AUTOMATIC VOLTAGE STABILIZER USING AUTOTRANSFORMER
61. DIGITAL CODE LOCK
62. TELEPHONE CALL METER
63. EMERGENCY LIGHT USING CFL
64. WIDE RANG SQUARE WAVE GENERATOR
65. 1 HZ CLOCK GENERATOR
66. REMOTE MUSICAL BELL
67. ELE. TELEPHONE DEMONSTRATOR
68. TELEPHONE CALL COUNTER
69. LED VOLTMETER FOR CAR BATTERY
70. QUALITY FM TRANSMITTER
71. DIGITAL VOLUME CONTROL
72. 99.99 SEC. STOP-CLOCK
73. MULTIPURPOSE DIGITAL COUNTER
74. VERSATILE ON/OFF TIMER
75. SUPER SIMPLE TRIANGULAR TO SINE WAVE GENERATOR
76. DIGITAL FAN REGULATOR
77. TEMPERATURE DISPLAY
78. FREQUENCY GENERATOR
79. SOUND LEVEL INDICATOR FOR STEREO SYSTEM
80. SINGLE-GATE SQUARE WAVE GENERATOR
81. QUICK 741 AND 555 TESTER
82. REGULATE DUAL POWER SUPPLY
83. SENSITIVE FM TRANSMITTER
84. LIGHT CONTROLLED DIGITAL FAN REGULATOR
85. MOVING MESSAGE DISPLAY EPROM BASE
86. PROGRAMMABLE DIGITAL TIME SWITCH
87. PROGRAMMABLE DIGITAL TIMER CUM CLOCK
88. REMOTE CONTROL AUDIO PROCESSOR
89. HEART BEAT MONITOR
90. AROPLANE DIRECTION INDICATOR
91. VOICE TRANSMITTER IN POWER LINE AND SWITCHING
92. A SINGLE-CHIP TIMER WITH DIGITAL CLOCK AND CALENDER
93. IMPEDANCE METER
94. REMOTE AUDIO LEVEL INDICATOR
95. MULTICHANNEL TOUCH SWITCH
96. SAW TOOTH WAVE GENERATOR
97. TEMPERATURE CONTROLLED FAN
98. 1 HZ MASTER OSCILLATOR
99. REMOTE TV TESTER
100. CORDLESS INTERCOM
101. REMOT CONTROLLERED LAND FOVER –A DIY ROBOTIC PROJECT
102. DIGITAL WEIGHT ACCUMULATOR
103. IR- TO- RF CONVERTER
104. FM RECEIVER USING CXA1619
105. HEAT SENSITIVE SWITCH
106. TRANSISTOR TESTER
107. AUTOMETIC SCHOOL BELL
108. DIGITAL STOP WATER
109. INFRARED INTERUPTION COUNTER
110. AUTOMATIC ROOM LIGHT CONTROLLER: In this project we use object counter circuit with, auto light on when any body enter in the room and counter display any number, when all the person left the room and counter shows a 0 number on display then only light is off two rays of sensor is install in the door.
PC INTERFACE PROJECTS
1. PC TO PC COMMUNICATION USING IR/FIBER OPTIC CABLE
2. PWM CONTROL OF DC MOTOR USING C++
3. COMPUTERISED ELECTRICAL APLAINCE CONTROL
4. DATA ACQUISITION CARD FOR P.C.
5. SIMPLE ANALOGUE INTERFACE FOR P.C.
6. P.C. BASED FUNCTION GENERATOR
7. PC BASED SUN SEEKER
8. COMMUNICATION BETWEEN PC’S USING IR, LASER
9. SIMPLE RELAY AND SENSOR INTERFACE FOR P.C.
10. P.C. BASED DIGITAL CLOCK
11. INTERFACE YOUR PC WITH LIGHT AND FANS
12. P.C. BASED VISITOR COUNTER
13. P.C. BASED TOKEN NUMBER DISPLAYER
14. PC BASE TRANSISTOR LEAD IDENTIFIER
15. PC BASED STEPPER MOTOR CONTROLLER
16. PC BASED DC MOTOR SPEED CONTROLLER
17. P.C. BASED 7-SEGMENT ROLLING DISPLAY
18. PC. BASED DC MOTOR SPEED CONTROLLED
19. PC BASED ROBOTIC ARM
20. P.C. BASED TIMER
21. P.C. BASED MULTILEVEL CAR PARKING
MICROCONTROLLER BASED PROJECTS
1. FASTEST-FINGER-FIRST USING 89C51
2. MICRO PROCESSOR BASED REVERSIBLE D.C. MOTOR CONTROL
3. MOVING MESSAGE DISPLAY 8085 MICROPROCESSOR
4. PC16F84- BASED CODED DEVICE SWITCHING SYSTEM
5. STEPPER MOTOR CONTROL USING 89C51
6. MIC-89C51 MONITORING SYSTEM
7. MANUAL AT 89C51 PROGRAM
8. AT 89C2051 BASED COUNTDOWN TIMER
9. MICROCONTROLLER BASED CODE LOCK USING AT 89C2051
10. LCD FREQUENCY METER USING 89C2051
11. CALLER ID UNIT USING MICRO-CONTROLLER
12. PIC 18 F 84 MICRO-CONTROLLER BASE CODE DEVICE SWITCH SYSTEM
13. MICROPROCESSOR-BASED HOME SECURITY SYSTEM
14. STEPPER MOTOR CONTROL USING 89C51 MICRO-CONTROLLER
15. MICRO CONTROLLER BASED TEMPERATURE METER
16. MICRO CONTROLLER BASED HEARTBEAT MONITOR
17. RS232 ANOLOG TO DIGITAL CONVERTER USING AT89C51 MCU
18. ULTRASONICRANGEFINDER USING PIC MICRO CONTROLLER
19. CALLER- ID UNIT USING MICRO CONTROLLER
20. MICRO CONTROLLER BASED PATHFINDER
21. MICRO CONTROLLER BASED ROBOT.
22. MICRO CONTROLLER MOVING MESSAGE DISPLAY
23. MICRO CONTROLLER BASED RELAY SWITCHING
24. MICRO CONTROLLER AUTO DIALER USING GSM.
25. MICRO CONTROLLER BASED WATER LEVER INDICATOR
26. MICRO CONTROLLER BASED WIRELESS HOME AUTOMATION
27. MICROCONTROLLER BASED RADAR SYSTEM
28. MULTI CHANNEL INFRA RED CONTROL 4 different point 89c2051 micro controller in transmitter and receiver, using infra red technique.
29. MOVING MESSAGE DISPLAY : 89c51 micro controller Led matrix,
30. Digital clock with alarm: using 89c51 micro controller
31. TRAFFIC LIGHT WITH DOWN COUNTER : all the four sides of the road with one side counter display using 89c51 micro controller circuit.
32. ULTRASONIC DISTANCE METER USING MICROCONTROLLER
33. PRI-PAID CAR PARKING SYSTEM
34. MULTILEVEL CAR PARKING BY MCU
35. MICRO CONTROLLER TEMPERATUIRE METER
36. ANOLOG TO DIGITAL CONERTER USING AT89C51 MCU
37. INFARED REMOTE CONTROLE SYSTEM
38. ULTRASONIC MOVEMENT DETECTOR
39. MICROCONTROLLER BASED TACHOMETER
40. MCU BASED VISITOR COUNTER
41. PWM CONTROL OF DC MOTOR USING 89C51
42. AN INTELLIGENT AMBULANCE CAR WHICH CONTROL TO TRAFFIC LIGHT
43. PRE-PAID ENERGY METER
44. MICROC CONTROLLER BASED LINE FOLLOWER OR TRACING ROBOT
45. AUTOMATED WALKING ROBOT CONTROLLED BY MCU
46. AUTO BRAKING SYSTEM
47. AUTOMATIC RAILWAY CROSSING GATE CONTROLLER
ROBOTIC & ELECTRO-MECHANICAL CONTROL BASED PROJECTS
1. ROBOTIC ARM INTERFACING WITH PC/MCU/ IR/RF
2. HYDRAULIC LIFT
3. LINE FOLLOWER OR TRACING ROBOT
4. AUTOMATED WALKING ROBOT
5. DIGITAL SPEED MEASUREMENT SYSTEM FOR AUTOMOBILE
6. LIFT CONTROL USING PC AND MCU
7. ESCALATOR LIFT USING PC & MCU
8. PATH FINDER MOBILE ROBOT
9. MULTILEVEL CAR PARKING LIFT USING MCU
10. AUTOMATIC RAILWAY CROSSING GATE CONTROLLER
11. AUTO REJECTION + CONVEYER BELT SYSTEM
12. AUTO JACK MACHINE
13. AUTO BRACK SYSTEM FOR AUTOMOBIL
14. PADDLE CONTROLLED WASHING MECHINE
15. HYDRO ELECTRICITY
16. WIND ELECTRICITY
17. ELECTRICITY FROM SPEED BRAKER
18. SOLAR SUN SEEKER
19. ROBOTIC CRANE WITH UP/DOWN & CIRCULAR MOTION
Objective of Project
To make system so that we can monitor vehicle speed
To install any electronic system need no Police.
To make project on Microcontroller, because we study in last semester
Methodology in Project- Basically we know the distance between two plaza . Microcontroller will measure time between two interrupts. So we can calculate speed of vehicle. We will use rf technology for long distance.
INTRODUCTION:
In this projects we will use two sensor on Road- one for vehicle speed measuring starting point and second at particular distance from it. We know the distance between these two points. Vehicle will have RFID. When it will cross first point then starting time will be saved in microcontroller and when vehicle will cross second point then our system will end timer . In this way we will calculate speed of vehicle . there will be two barriers at each point- starting and end point. First will open each time. Second will open when vehicle speed is less than 60. Otherwise challan will display on LCD. There will be punching card system to pay challan. If vehicle will pay amount then only they could go. Similarly vehicle will check Insurance of vehicle also. If Insurance will ok then barrier will open otherwise they have to pay challan also.
In this project we will monitor vehicle speed using electronic ID provided to vehicle. Vehicle have his own ID. When vehicle will come contact with nearest toll plaza, then plaza will read its id. Then vehicle start will be recorded in Microcontroller memory. When vehicle will reach another nearest plaza 2 , then our control panel will calculate the total time taken by vehicle from plaza1 to plaza2. In this way we could calculate its speed because distance will be fixed. On second plaza particular vehicle will be detected by RFID of vehicle. If speed of vehicle will be more than limit then there will be challan LCD display. Our voice processor will play recorded message-“ come and pay amount”. Owner will have to pay amount by sSeptt card system- punching technology. If car owner will pay amount then he could go. System will also check other documents of vehicle like vehicle
Pin no 40 of this controller is connected to the positive 5 volt supply. Pin no 20 is connected to the ground pin. Pin no 18 and 19 is connected to the external crystal oscillator. External crystal provide a clock pulse to the processor . Here we use internal timer of the ic to count the pulses. For display the result, we use one lcd. Here lcd is 2 by 16 lcd and display all the detail which is provided by the processor.
These two beam detector circuit provide a pulse to the micro controller directly. As the micro controller sense the signal timer is start and at this timer internal count process is on. Here we use ic 89s51 as a main processor.
Synopsis Download click Mobile jammer Detail .doc file
INTRODUCTION &WORKING:-
A “Cell Jammer” is just way of saying “Dirty Transmitter” which happens to transmit within the Cellular Phone Bands. Reality is, the dirtier the better.
The 555 timer [8 pin] IC simply makes a noise. It’s coupled via C4 [electrolytic] to modulate the MRF transistor oscillator. With C1 set at roughly 1/3rd, you will be close to 900 MHz. By sweeping the C1 trimmer capacitor, you can swing the output frequency from 800 MHz to 2 GHz with the transistor and values shown.
You could replace the 555 chip with an electret microphone and listen to yourself talk on a scanner, so the unit could easily couple as a UHF Bug.
Instead of a single Tapped Coil, I’ve used two molded inductors for ease of construction.Values for C1,C2,L1,L2 are critical for the frequency range.
You might want to build the unit into a metal box, add an on/off switch in the batteries + line, and maybe even add a LED. Connect an old 800 MHz cell phone antenna to C5.
Would you believe the whole thing can be built on top of the 555 IC itself when using surface mount components, and the lot will fit onto a nine volt battery clip. Output is reasonably good, although the current drain is a bit high, so a new 9 Volt battery will only run about an hour, [if you are lucky].
The “Cell Kill Distance” is around 10 – 15 feet, ample for most purposes.
Radio jamming is the (usually deliberate) transmission of radio signals that disrupt communications by decreasing the signal to noise ratio. Unintentional jamming occurs when an operator transmits on a busy frequency without first checking whether it is in use, or without being able to hear stations using the frequency.
Another form of unintentional jamming occurs when equipment accidentally radiates a signal, such as a cable TV plant that accidentally emits on an aircraft emergency frequency. The concept can be used in wireless data networks to disrupt information flow.[1] It is a common form of censorship in totalitarian countries, in order to prevent foreign radio stations in border areas from reaching the country.
Radar jamming and deception is the intentional emission of radio frequency signals to interfere with the operation of a radar by saturating its receiver with noise or false information. There are two types of radar jamming: Mechanical and Electronic jamming.
As with other radio jamming, cell phone jammers block cell phone use by sending out radio waves along the same frequencies that cellular phones use. This causes enough interference with the communication between cell phones and towers to render the phones unusable. On most retail phones, the network would simply appear out of range. Most cell phones use different bands to send and receive communications from towers (called frequency division duplexing, FDD). Jammers can work by either disrupting phone to tower frequencies or tower to phone frequencies. Smaller handheld models block all bands from 800MHz to 1900MHz within a 30-foot range (9 meters).
Components Required:
NE555 Timer
Resistors
82kohm
6.8 k ohm
220 ohm
10k ohm
capacitors
5 microfarad
50 pf
1pf
20 pf vaiable
Inductor
2.2 nH
1 nH
Antenna Longe range -omni- 10 meter range
Block Diagram:
Bibliography
Sensors Connections will according to type of Gas sensor Use-
Normally Gas sensor start from MQ2 to MQ15 . According to gas required
For Smoke- MQ2
LPG- MQ5
Alcohol – MQ3
Components Used:
Q3- BC548
Q4-BC558
D&- LED 5mm
R12- 10k variable resistor
R13- 1k
R14+R15- 1k
555 timer
LDR- 5mm- 50 ohm
Soldering wire
Soldering Iron
Multimeter
PCB-
clap switch
Here is a circuit for electronics hobbyists that can switch on and off, a fan or a Radio etc. by the sound of a clap.
The sound of clap is received by a small microphone that is shown biased by resistor R1 in the circuit. The signal is further amplified by transistors Q1,Q2,Q3. The relay contact is connected to the power line and hence turns on/off any electrical device at output socket.
PARTS LIST:
RESISTORS:
R1 – 15K
R2,5,12 – 2M2
R3 – 270K
R4 – 3K3
R6,10 – 27K
R7,11 – 1K5
R8,9 – 10K
R13 – 2K2
MISC:
X1 – 12V / 300mA Transformer
NIC – Condenser Mic
RLY – 12V Single charge over relay
CAPACITORS:
C1 – 10KPF Disc
C2,3 – 47KPF Disc
C4 – 1000uF/16V
SEMICONDUCTORS:
Q1,2,3,4 – BC 149 B OR C
D1 – IN 4002
D2,3,4,5 – IN 4148
Electronics harmonium
ELECTRONIC HARMONIUM
So much is being said and done about electronic music now a days that you may be interested to have hands on experience in this field. To get you started here is am easy to make project.
This harmonium can generate 15 different notes of music (One at a time). It has a PCB with15 parallel copper strip. Each strip corresponds to one note. So as you put the probe on a strip, the instrument plays a corresponding note.
The heart of the circuit is a 555 timer IC. Here the IC is used as an oscillator ( or free running multivibrator, as it is technically called) which can produced square waves of different frequencies. The frequency produced depend on the note selected by the probe. A glance at the circuit diagram tells us that when we put the probe on different strips , we are effectively changing the resistance between pin 7 and pin 2 (and 6) of 555. For convenience we may denote this resistance by Rk.
Now let us have a look at the functioning of 555 as an oscillator. If we assume that 555 has been given a 9 volt power supply across pins 1 and 8, it exhibits the following properties:
In our ckt. We have connected pin 2 and 6 together. So if we assume that output at pin 3 is 9V, at a particular instant the combination of R1 and RK (R2 to R16) charges capacitor C3 and voltage across the capacitor keeps on increasing. When it becomes slightly more than 6V, pin 6 senses it and changes output voltage at pin 3 to 0V and pin 7 starts acting as if it has shorted to the ground. So C3 starts discharging through RK. As soon as pin 2 senses that voltage across the capacitor is less than 3V, output is switched back to 9V, so the cycle repeats itself. This way we get square waves at pin 3 since capacitor c3 charges and discharges through RK, the charge and discharge times can be varies by changing values of RK and in turn the frequencyof square wave can be changed. The values of R2 to R16 (which present RK) have been calculated to give the correct ratio within 2 percent tolerance.
For a sweet musical sound, it is required to have symmetrical sqaure wave ( which is in high and low state for equal periods of time) Thus R1 is kept small compared to RK in order to achieve a nearly symmetrical waveform.
The types as speaker used is not critical, you can use almost any speaker. For a loud sound use at least 10 CM speakers. You may solder resistors R2 to R16 directly on the PCB of keyboard.
PARTS LIST:
RESITORS:
R1 – 10K
R2 – 82K
R3,R5 – 68K
R4,R10,R12 – 33K
R6,R7 – 47K
R8,R13,R14 – 22K
R9 – 39K
R11 – 18K
R15 – 12K
R16 – 180K
CAPACITORS:
C1 – 10uF/16V
C2 – .01 uF
C3 – .002Uf
SEMICONDUCTOR:
IC1 – 555
S1-S15- 2PIN PUSH ON SWITCH
9V BATTERY SNAP
SPEAKER 8E LS WT
