stepper motor using 8051

[tubai chakraborty]

 i want to rotate the motor with intensity of light using 8051.plz help me out.

also i was going through the project control of stepper motor using  8051 but i could not understand how to programe the 8051 micro controller using c language.please help me out about this program also.

[AJISH ALFRED]

Connect any kind of ambient light sensor to the ADC of the microcontroller. Drive the motor using PWM method. All you have to do is to vary the low time of  the pulse with the ADC value.

[D.V.G. Krishna]

if you want to control the speed of motor then follow the logic

 

use a LDR(light dependent resistor)

commet one end to Vcc and other end to a 10K resistor. other end of resistor to ground.

take out put from LDR and resistor interface

give it to an ADC

 

to drive the stepper motor use ULN2003 IC

 

read adc

 

motor port =0x01;

delay(adc value);

motor potr=0x02;

delay(adc value);

motor port=0x04;

delay(adc value);

motor port=0x08;

delay(adc value);

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