adc0804

[anamika]

pls help me to interface 4 ldr s with ADC0804……pls help me as soon as possible….thank you…

[Ashutosh Bhatt]

1st thing why do u need 4 LDR?

2nd thing why r u using ADC0804?

 

if you want to get digital output from 4 LDRs then use ADC0809 that has 8 channels.

another option:  use micro controller with built in 8 channel ADC like AVR or PIC. ATmega16 is best.

 

finaly if you want to stick with ADC0804 then use 4x1analog  multiplaxer (not digital) before ADC. 

[anamika]

thank you sir….i am going to use ADC0808.

[Ashutosh Bhatt]

dont forget to provide fixed value biasing resistor before LDR. 

[Author]

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