Why can't I connect LDR sensor?

General
1

1- First of all I have StandardFirmata loaded for my Arduino board connected to COM4 port:

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2- After opening Node Red and Deploying, only the LED works and the LDR does not connect

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3- Both are connected to the same COM4 port, which is the correct one

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Does anyone know how to solve this problem? If I have to run another type of Firmata, I don't know

Thank you very much for your attention

2

An LDR is an analog device, have you connected it to one of the Analog in pins, via a voltage divider, as well as designated as such in the node?

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2 Likes
3

It worked, the problem was that I was putting A5 instead of just 5

Thank you very much for the reply and for the help, I appreciate it

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