latest engineering projects

Infrared interruption counter is a reliable circuit that takes over the task of counting number of interruptions very accurately. When somebody enters into the room, then the Counter is Incremented by one. The total number of Persons inside the Room is displayed on the seven segment displays.
The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM.
All the above systems are controlled by the Microcontroller. In our project we are using the popular 8 bit microcontroller AT89C2051. It is a 20 pin microcontroller.

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TOTAL CIRCUIT OF THIS PROJECT

Multipattern Running Lights (AT89C2051)

This Project Multi-Pattern Running light is used to generate several designs of Running Lights. We use ten

for display. The designs can be selected by using two switches UP and DOWN. The 8 bit Microcontroller is used to control all the operations. It control the though the Ports.
The above system is monitored and controlled by the 8 bit microcontroller AT89C2051. The Microcontroller continuously monitors the Switches and switch on/off the according to the Program. The Power for the circuit is derived from the Step down transformer and the 5V regulator IC7805. The regulator IC produces a constant 5v output.

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TOTAL CIRCUIT OF THIS PROJECT

SMS through Telephone (AT89S8252)

The main objective of this system is to transmit message or text through ordinary Land Line Telephone from one end (source) to another end (designation). This is get achieved by the DTMF technology. It has two sections one for editing the text and to transmit the edited text and the other section consist for receiving the text message. The system works on the DTMF technology. (Dual Tone Multiple Frequency).
It involves several steps. They are
DTMF decoding/Encoding process
Ring sensing
tON/OFF hook detection
Displaying the message in LCD
The above process is get achieved by the microcontroller AT89S8252.Thus Microcontroller controls the whole system.

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TOTAL CIRCUIT OF THIS PROJECT

TIME OPERATED ELECTRICAL APPLIANCE CONTROLLING SYSTEM

Power Saving Using Time Operated Electrical Appliance Controlling System is a reliable circuit that takes over the task of switch on/off the electrical devices with respect to time. This project replaces the Manual Switching. It has an Inbuilt Real Time Clock which tracks over the Real Time. When this time equals to the programmed time, then the corresponding Relay for the device is switched ON. The switching time can be edited at any Time using the keypad. The Real Time Clock is displayed on four 7-segment display.

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TOTAL CIRCUIT OF THIS PROJECT

Two Line Intercom (AT89C2051)

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TOTAL CIRCUIT OF THIS PROJECT