[EMS Discuss] Light sensor refinement suggestions?

Sat Aug 24 14:36:26 PDT 2013

Put a piece of smoked glass over it?

Sent from my phone.  No type good.
On Aug 24, 2013 2:01 PM, "Greg Norman" <EMAIL HIDDEN> wrote:

> I built a light sensor for a time lapse camera controller
> but it goes into saturation very quickly when the sun rises.
> It's made out of LDR (Light Dependent Resistor). I suspect
> for a wider sensitivity I need to use a diode and a op amp
> but I'd like to keep it simple.
> Anyone have a suggestion on biasing it as to respond to a
> wider range of light? Currently it connects to a Arduino
> analog pin and +5V with a 10K pull down resistor to ground.
> The LDR goes from 500 ohm with light to 6K ohm in dark
> The circuit is:
>   5V---(LDR)---(Arduino Pin)---(10K ohm)---GND
> --
> Posted from the Discuss forum
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