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I used simulator 123d.circuits.io to create simulation of basic circuit with LDR: LDR is connected to 5V and via 10K resistor to GND. Wire between LDR and resistor is connected to analog pin where I read ADC values and display them using serial monitor. This works fine. But I would like to how to change lighting level of LDR in simulation because this way LDR shows still the same value. I tried putting LED or light bulb near LDR but it doesn't seem to have any influence. Any ideas?

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Ok, so I found it myself. You can click on LDR during simulation and bar to adjust lighting appears above it.

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    Please use the edit link on your question to add additional information. The Post Answer button should be used only for complete answers to the question.
    – Nick Gammon
    Jul 19, 2015 at 22:10
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    It is complete answer to the question.
    – Garnagar
    Jul 20, 2015 at 22:43

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