lurkingdevil
New Member
I have a photodiode that looks like this :
**broken link removed**
I have set up a circuit like this :
**broken link removed**
that I picked up from here : https://www.robotroom.com/ReversedLED.html
I used a 220k resistor in pace of the 30M. But I can't get anything on the op-amp output.
My meter reads 3-6mV. Even if I remove the photodiode the reading doesn't change.
Honestly I don't know what resistor I should use, I just used the maximum value I had at hand.
I'm using LM358 opamp .
Help please..
**broken link removed**
I have set up a circuit like this :
**broken link removed**
that I picked up from here : https://www.robotroom.com/ReversedLED.html
I used a 220k resistor in pace of the 30M. But I can't get anything on the op-amp output.
My meter reads 3-6mV. Even if I remove the photodiode the reading doesn't change.
Honestly I don't know what resistor I should use, I just used the maximum value I had at hand.
I'm using LM358 opamp .
Help please..
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