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Design and Development of 89C51 Microcontroller Based Infrared Remote Control system


Posted by: seminar class
Created at: Wednesday 30th of March 2011 05:29:41 AM
Last Edited Or Replied at :Saturday 30th of April 2011 03:30:52 PM
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EVELOPMENT
 89c2051 microcontrolle
 Infrared remote
 Infrared sensor (TSOP1238)
 MAX 232
 Resistances: 3x 4.7K
 Capacitances: 2x 22pf, 1x 220uf
 Crystal Oscillator
FOR 5V POWER SUPPLY CIRCUIT
 12-0-12 transformer
 2 X 1N4007 (diodes)
 2 X 1000uf capacitances
 LM7805 voltage regulator
SOFTWARE DEVELOPMENT
Requirements:

 Any operating system supporting web browsing like Windows 95, 98, 2000, XP, NT, Linux etc.
 Visual basics – for coding and developing.
 Web browsers like internet explorer, Mozilla firefox , opera e..................[:=> Show Contents <=:]



WIRELESS CONTROLLED GREEN HOUSE AUTOMATION


Posted by: seminar class
Created at: Wednesday 09th of March 2011 05:23:56 AM
Last Edited Or Replied at :Thursday 25th of August 2011 11:36:28 PM
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d determine the appropriate positions to
place the sensors. A series of tests will be done to make sure that all the sensors are
working accordingly. These sensors will be connected to a microcontroller which will
function as the main control unit. The sensors will send signals to the microcontroller and
the microcontroller will translate the signals and determine if the input is within the
preset range. For instance, if the preset temperature range is from 20oC to 25oC, the
microcontroller will make sure that the greenhouse temperature is within this range. If the
temperature exceeds t..................[:=> Show Contents <=:]



Green house monitoring using zigbee


Posted by: seminar class
Created at: Monday 07th of March 2011 01:30:09 AM
Last Edited Or Replied at :Monday 07th of March 2011 01:30:09 AM
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ty with other Zigbee devices. Compared to other wireless protocols, Zigbee wireless protocol offers low complexity. It also offers three frequency bands of operation along with a number of network configurations and optional security capability. It requires a supply voltage in the range of 2.8V to 3.3V.
Functional Description:
The transmitter consists of a temperature sensor and humidity sensor, whose analog voltage output is given as input to the ADC. The ADC will convert the analog voltage to the 8 bit digital value. The microcontroller will calculate the temperature and it is tran..................[:=> Show Contents <=:]



HOME AUTOMATION USING MOBILE COMMUNICATION


Posted by: projectsofme
Created at: Friday 26th of November 2010 12:59:42 AM
Last Edited Or Replied at :Friday 03rd of February 2012 10:43:13 PM
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ting Voltage -> 5-6Vdc ± 10%
2. Input supply -> 230Vac, 50Hz
3. Input current -> 250mA
4. Protection -> Medium blown Fuse
O/P Requirements
1. O/P Voltage -> 5v ± 10%
2. Ripple voltage -> 1-5%
3. Relay -> 6Vdc, 200Ω
4. RMS current -> 1A

3. Voice recording and playback device

I/P Requirements
1. Operating Voltage -> 12Vdc ± 10%
2. Input supply -> 230Vac, 50Hz
3. Input current -> 250mA
O/P Re..................[:=> Show Contents <=:]



speed control of moving vechiles using speed cameras


Posted by: vasu bajaj
Created at: Sunday 28th of March 2010 07:09:29 AM
Last Edited Or Replied at :Friday 02nd of April 2010 03:14:36 AM
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i want..................[:=> Show Contents <=:]



Remote control using VHF modules


Posted by: computer science crazy
Created at: Wednesday 09th of September 2009 02:01:30 AM
Last Edited Or Replied at :Wednesday 09th of September 2009 02:01:30 AM
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ts base bias from VG40R module. As a result the transistor conducts and applies a trigger pulse to IC 555, which is wired as a monostable multivibrator. The relay remains activated till the preset time is over. Time delay can be varied from a few seconds to a few minutes by adjusting timing components.
To switch on and switch off a load (refer Fig. 4), a 555 IC and a decade counter 4017 IC are used. Here the 4017 IC is wired as a flip-flop for toggle action. This is achieved by connecting Q2 output to reset terminal while Q1 output is unused. Q0 output is used for energising the relay. The re..................[:=> Show Contents <=:]



Ultrasonics and Acousto-Optics for the Nondestructive Testing of Complex Materials


Posted by: Computer Science Clay
Created at: Saturday 06th of June 2009 10:55:36 PM
Last Edited Or Replied at :Thursday 27th of August 2009 06:56:57 PM
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ith multi-layered fiber reinforced composites and crystals, the propagation of ultrasound in piezoelectric materials that are subject to a pre-stress, and diffraction phenomena on 1D and 2D corrugated surfaces...................[:=> Show Contents <=:]



Selective Catalytic Reduction SCR


Posted by: computer science crazy
Created at: Tuesday 07th of April 2009 11:58:25 AM
Last Edited Or Replied at :Tuesday 07th of April 2009 11:58:25 AM
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on well only within a narrow temperature window, and for OEM installations the Engine Control Unit is specially programmed to keep the exhaust gas temperature in that range..................[:=> Show Contents <=:]



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