8051 interface with buzzer

[kalyani1992]

how to interface buzzer with 8051 uc for temperature controller??

the buzzer should be on when temperature goes above 100°C

 

[matthai]

hi,
where is your circuit.....?
in this case we need adc to convert analog signal to digital.
connect the buzzer to any port pin usnig transistor as switch.


View attachment BUZZER.pdf

 

[kalyani1992]

hi,
where is your circuit.....?
in this case we need adc to convert analog signal to digital.
connect the buzzer to any port pin usnig transistor as switch.


View attachment 82100

Thnx for the info..

My circuit is the normal temperature controller where sensor is LM35,after that there is a signal conditioning circuit and then ADC interfaced using 8051 uc.
this data is displayed on LCD thro port P2.