How to measure voltage using 8051 ???

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abhijit.borse

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I want to measure the voltage in mV range using 8051.
Can anyone help me with schematic and code?????
 

abhijit.borse said:
I want to measure the voltage in mV range using 8051.
Can anyone help me with schematic and code?????
Click to expand...

i think you can try using ADC in following manner..

==> I/P-ADC-MCU-LCD(O/P)...
 

abhijit.borse said:
I want to measure the voltage in mV range using 8051.
Can anyone help me with schematic and code?????
Click to expand...

Are you using exactly an 8051 or a micro with 8051 core? If it is the stand alone 8051, you need an external adc.

I think there are 8051 core micros with built in adc's also.
 

hi

if you want to measure any analog signals, you need to convert it to a digital form
either you can use ADC or voltage to frequency converter, some thing like that
ATMega had the inbuilt adc in that. normal 8051 does not have the inbuilt adc. there you need external adc or some converter as mentioned above. if you dont required good accuracy, you can use the comparator (in built in at89c2051) and simple rc circuit to make a slope type adc. but no guarantee of accuracy.


regards

ml
 

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