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LDR/Photodiode recommendations?

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AlGeorge

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Here is a job:
To sense ambient light change as a switch from say day to night, with eg PIC10F206.
Device between input port with weak pullup enabled, and VSS. Possibly use the comparator for validity of change and hysteresis.
Assume LDR is the better of the two options or is there another device to consider mainly need lowest cost part thanks vm.
Alistair.
 

bobcat1

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Hi

Use digital output sensor it is more easy to use since the output is all ready in given in LUX scale

There are several company who produce digital sensor like AVAGO ,VISHAY etc

All the best

Bobi

The microcontroller specialist
 

karesz

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You can find photodiodes with eye similar sensitivity- if it is a aspect for you...
K.
 

AlGeorge

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bobcat1 said:
Hi

Use digital output sensor it is more easy to use since the output is all ready in given in LUX scale

There are several company who produce digital sensor like AVAGO ,VISHAY etc

All the best

Bobi

The microcontroller specialist
Those parts are in $ I am talking about parts in cents.
Al

Added after 2 minutes:

When replying to this post please consider that cost is mentioned in OP as critical. Also I suspect the interfacing an LDR to PIC would be very easy but open to other suggestions thanks. I suspect a photodiode would cost more and require a/d interface?
Al.
 

karesz

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AlGeorge said:
...Those parts are in $ I am talking about parts in cents.
Al.
You did forget it to write us at the begin:-(...
K.
 

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