8051 Microcontroller

Traffic light control

water level indicator

this article  illustrates the working of water level indicator.water tank that is usually placed at the top of multistory building are difficult to monitor manually,the user can configure the water level according to need thus avoid unnecessary spillage of water. as we know water conducts electricity,this principle can be used to construct the circuit.

stepper motor interfacing with 8051

this tutorial explains the stepper motor(uni-polar)  interfacing with 8051. stepper motor has great advantage in field of robotic where precise angular movement is needed.for basic concept of stepper motor read this article stepper motor. here motor is programmed to rotate both in half and full drive mode

PROTEUS DESIGN

 

Voting Machine

A electronic voting machine  is a best way to cast your vote and declaring result by reducing time effectively in very short time in recent time electronic voting machine has almost replaced convetional voting machine.before moving through it is assumed you know LCD interfacing.Code for project is written in C and circuit uses AT89c51 micro-controller operated at 12mhz crystal frequency

seven segment fixed display using 8051

seven segment is most common output device with a limitation that only digits and few characters can be displayed ex- you can not display 'k'.  in seven segment array of LEDs are arranged in a special pattern. as shown in figure 7 leds a-h is assigned for special digit/character while eighth LED 'h' is used to display the dot.particular LED glows when its corresponding pin goes high

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