Automatic Night Lamp with Morning Alarm using 8085 Microprocessor

As the name suggests “Automatic Night Lamp with Morning Alarm” was developed using Microprocessor. 8085 is the Heart of the system. The sensors are made with help of LDR which are Light Dependent Resistors, whose Resistance is inversely proportional to the Light falling on it. The LDR converts the light energy into electrical energy and this variable electrical energy was converted into digital signal (0 or 1) by using the timer IC555. The Timer IC output goes low when light falls on the LDR and the timer IC output goes high when the LDR was placed in dark

circuit is as shown in below figure:

circuit

the flow chart for Automatic Night Lamp with Morning Alarm using 8085 Microprocessor is as shown in following fig.

flow chart

the program for Automatic Night Lamp with Morning Alarm using 8085 Microprocessor this is as shown below make sure that the Power supply pins & Port number before you connect the Hardware to the Trainer Kit.

0001   0000
0002   0000             PORTB EQU 0DH
0003   0000             PORTC EQU 0EH
0004   0000             REG EQU 0FH
0005   0000
0006   0000             .ORG 4100H
0007   4100
0008   4100 3E 82       MVI A,82H ;Set control word for 8255
0009   4102 D3 0F       OUT REG
0010   4104 3E 20       MVI A,00100000B ;switch off LED and alarm
0011   4106 D3 0E       OUT PORTC
0012   4108
0013   4108 DB 0D       UP: IN PORTB
0014   410A FE 20       CPI 20H
0015   410C CA 2F 41     JZ NIGHT ; jump if night
0016   410F 3E 60       MVI A,01100000B ;Switch on music and off light
0017   4111 D3 0E       OUT PORTC ;OUT to port C
0018   4113
0019   4113 0E 14       MVI C,14H ;call delay routine for 10sec
0020   4115 2A FF FF    SEC: LHLD 0FFFFH
0021   4118 3E 09       MVI A,09
0022   411A CD 05 00     CALL 0005
0023   411D 0D           DCR C
0024   411E C2 15 41     JNZ SEC
0025   4121
0026   4121 3E 20       MVI A,00100000B
0027   4123 D3 0E       OUT PORTC
0028   4125
0029   4125 DB 0D       N1: IN PORTB
0030   4127 FE 20       CPI 20H
0031   4129 C2 25 41     JNZ N1
0032   412C C3 08 41     JMP UP
0033   412F
0034   412F 3E 00       NIGHT: MVI A,00H ;switch on LED
0035   4131 D3 0E       OUT PORTC ;
0036   4133 C3 08 41     JMP UP
0037   4136
0038   4136             .END

 no. of errors = 0

FINAL WORDS:
Finally u have learned to make the project Automatic Night Lamp with Morning Alarm using 8085 Microprocessor and make this today and ENJOY.

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AUTOMATIC NIGHT LAMP WITH MORNING ALARM USING MICROPROCESSOR

AUTOMATIC NIGHT LAMP WITH MORNING ALARM USING MICROPROCESSOR

INTRODUCTION:

This Project "Automatic Night Lamp with Morning Alarm" was developed using Microprocessor. It is the Heart of the system. The sensors are made with help of LDR which are Light  Dependent  Resistors,  whose  Resistance  is  inversely proportional to the Light falling on it. The LDR converts the light energy into electrical energy and this variable electrical energy was converted into digital signal (0 or 1) by using the timer IC555. The Timer IC output goes low when light falls on the LDR and the timer IC output goes high when the LDR was placed in dark.

OBJECTIVE:

1) Tolearn and develop knowledge in designing the application by using the microprocessor.
2) Tolearn how to write an assembly language and combining with the hardware.
3) Tolearn how make a full report of project Microprocessor

SYSTEM DESCRIPTION:

In  this  mini  project, the  components  that  has been  used  is  8255,  IC  555,resistors,  capacitors,
LDR,  Buzzer,  LED  and  Transistor  NPN.  Light Dependent Resistors (LDR) is function as a sensor.
It will detect when there is light or in we can say in the  day.  LDR  then  converts  the  light  energy  into  electrical energy and this variable electrical energy was converted into digital signal ( 0or 1) buusing timer  IC555.  The  Timer  IC  output  goes  low  (0) when light falls on the LDR and the timer IC output goes high when the LDR was placed in dark.

DOWNLOAD FULL PROJECT HERE

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Remote Controlled Home Automation System via Bluetooth Home Network

Remote-Controlled Home Automation System via Bluetooth Home Network

Recently the idea of a home automation has been an important issue in many publications and home appliances companies. Home automation is a house or living environment that contains the technology to allow devices and systems to be controlled automatically.

Remote and local control are useful to keep home comfortable and to support the elderly and the disabled people. In this paper, we discuss possible developments of Bluetooth wireless technologies and describe the hardware for devices and software for the considerations of a home automation system.

Finally, we have validated the testbed by simulating in the Bluetooth home network.

Introduction:

Bluetooth technology is capable of transmitting data and voice at half-duplex rates of up to 1 Mbps without the use of cables between portable and fixed electronic devices. Home automation is one of the major applications of Bluetooth technology.

The core technology of home automation is communicating and controlling automatically with each device and sensor in Bluetooth based on home network. Bluetooth network attempts to provide significant advantages over the other data transfer technologies, such as IrDA, Home RF, and Wireless LAN.

By using Bluetooth wireless home network, a home network system can be installed with a low cost and it is simple to implement in an existing home. Bluetooth was designed primarily as a cable  replacement technology for consumer electronic devices and data communication that uses short-range ratio links to operate in the 2.4 GHz.

Source:

Pontificia Universidad Javeriana

authors:

Kwang Yeo Lee and Jae Weon Choi

DOWNLOAD FULL PROJECT HERE

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Power Generation Using Speed Breaker with Auto Street Light

Power Generation Using Speed Breaker with Auto Street Light

In day today life, power is a major need for human life. There is a need to develop non-conventional sources for power generation due to the reason that our conventional sources of power are getting scarcer by the day.

This paper emphasises on the idea that the kinetic energy getting wasted while vehicles move can be utilized to generate power by using a special arrangement called “power hump”. This generated power can be used for general purpose applications like streetlights, traffic signals. In addition, we could also have solar panels, which would satisfy our power needs, when there is no vehicular movement.

Introduction:

In the present day scenario power has become the major need for human life. Energy is an important input in all the sectors of any countries economy. The day-to-day increasing population and decreasing conventional sources for power generation, provides a need to think on non-conventional energy resources.

Here in this paper we are looking forward to conserve the kinetic energy that gone wasted, while vehicles move. The number of vehicles passing over speed breaker on road is increasing day by day. Beneath speed breaker, setting up an electro-mechanical unit known to be power hump, could help us conserving this energy and use it for power generation. The electrical output can be improved by arranging these power humps in series. This generated power can be stored, by using different electrical devices.

We can supply this energy to street lights, traffic lights, and nearby areas, and thus helps in country’s economy. We could make it more efficient, by also having a solar panels that provides for power needs while the vehicles were not moving.

Source:

 IJESIT

Author:

 Amanpreet Kaur, Shivansh Kumar Singh, Rajneesh, Parwez, Shashank

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Lemon Battery - a simple elctrical project for school college students

Lemon Battery

The lemon battery is a simple type of electrical battery that is commonly made for school science projects because it illustrates a battery's main components. Typically, a piece of zinc metal and a piece of copper metal are inserted into a lemon. Everyday objects such as galvanized nails and copper pennies can be used for the zinc and for the copper. A single lemon is usually studied using an electrical meter. Several lemons can be wired together to form a more powerful battery that will power a light-emitting diode, a buzzer, or a digital clock.

The lemon battery is similar to the first electrical battery invented in 1800 by Alessandro Volta in Italy. Volta used brine (salt water) instead of lemon juice. The lemon battery is described in some textbooks in order to illustrate the chemical reactions that occur in batteries. The zinc and copper are called the electrodes of the battery, and the juice inside the lemon is called the electrolyte. There are many variations of the lemon battery that use different fruits (or liquids) as electrolytes and metals other than zinc and copper as electrodes.

This article contains instructions for making a lemon battery and using it to power a light-emitting diode. If you want to know more about the science and history of the lemon battery, you can get started  Wikipedia.

Materials and equipment required:

• Light emitting diode. These look like plastic pieces with 2 wires stuck into them. They are usually just called LEDs, which comes from the first letters of the three words Light Emitting Diode. When the right battery is hooked up, the LED will glow. A red one is good for the lemon battery experiment; there is another section of this article that discusses how to find an LED. While LEDs are a good choice for this experiment, some other ideas are given below in the section "Alternative devices".
• Lemons. You'll need 3 or 4. Any citrus fruit, like limes, grapefruits, or oranges, or even a potato will work.
• Zinc electrodes. You'll need 3 or 4. Most likely you'll use a piece of metal that's been coated with zinc. This is what the word "galvanized" means. A galvanized metal washer that's about one inch (2 – 3 cm) in diameter will work well. Galvanized roofing nails, galvanized screws and bolts, and even paper clips can also work. If you can find some zinc sheet, and some shears or tough scissors to cut it, that will work very well. Be careful if you do this; the edges of sheared metal sheets are sharp. If you can, file the edges to make them less sharp.
• Copper electrodes. You'll need 3 or 4. Copper or copper-coated pennies work well. You may find some good copper fittings in the plumbing section of a hardware store. Again, if you can find some copper sheet, and some shears or scissors to cut it, that will work. Again, be careful about sharp edges.
• Leads. You'll need 5 or 6. The easiest thing is to get hold of a packet of insulated lead wires with "alligator clips" on each end.
• Multimeter (optional). If you know how to use an electrical multimeter, it can be helpful in getting your battery to work.

Making a single lemon cell

Make the first lemon cell. Your battery is going to have at least 3 lemon cells, but each cell is made the same way.

1. Clean your electrodes carefully. Your goal is to get any dirt or grease off of them, and also to scrub away the thin "oxide" coatings on them. It should work fine if you clean them in the same way that you'd clean a pan in the kitchen to make it clean and shiny. Scrubbing with steel wool or with an abrasive sponge will work fine; if you are using a galvanized electrode, be careful not to rub off the zinc coating completely.
2. Stick one zinc electrode into the lemon (or other fruit). You may need to use a small knife to cut a slit into the lemon. You want the electrode to go into the lemon as deeply as possible, but you'll need a little bit of the electrode to stick out of the fruit so you can attach a lead wire to it. Wiggle the electrode around a little to smash the membranes inside the fruit.
3. Next, stick the copper electrode into the same lemon. You want this electrode to be close to the zinc electrode, but it must not touch the zinc inside the lemon. If they do touch, your cell will not work. As for the zinc electrode, you want to stick the copper electrode into the fruit as far as you can, and you want to wiggle it a bit to make sure the membranes near the electrode are broken.(Optional) If you are using a multimeter, you can do the following tests to make sure your lemon cell is working.
4. Hook up two alligator clips from your leads to the two electrodes. Connect the two clips to the leads of the multimeter.
5. Measure the voltage from your lemon cell. It should read about 0.9 - 1.0 volts.
6. Measure the current from your cell. You should read a few tenths of a milliampere. Some multimeters are not sensitive enough to measure currents less than one milliampere, in which case you'll just see 0.0 as the reading.

Making the lemon battery

When several lemon cells are wired together, the collection is called a battery. We usually call a single lemon cell a battery also. Most batteries that you may purchase to use in toys and electronics have just one cell inside.

1. You need to make 3 lemon cells. If you're using a multimeter, make sure that each cell generates the correct voltage and the correct current.
2. Using two lead wires, connect the three cells together. Connect the zinc electrode on the first cell to the copper electrode on the second. Connect the zinc electrode on the second cell to the copper electrode on the third lemon. This is called a "series" connection; the three cells make up the lemon battery.

Connecting the LED

Connect a lead wire from the copper electrode of the first lemon cell to the longer lead wire from the LED. Connect a lead wire from the zinc electrode of the third cell to the shorter wire of the LED. You may need to gently pull the lead wires that come from the LED apart; the alligator clips on the ends of the two lead wires that connect your battery to the LED must not touch each other.
The LED will glow now enjoy your diy project.

Any questions please leave a comment below:

 

 

 

 

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