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Linker shield + linker light sensor compatibility

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I bought the arduino linker shield (N05DH) and linker light sensor (N17DH) for use together but am facing an issue.


When connected through the header pins on the shield I start to get readings, but when I put my finger over the LDR, the readings go low and stay low (even when I remove my finger).


I noticed that the light sensor works fine on 3.3V but not on 5V so I presume that the shield is passing 5V to it.


Can anyone confirm whether these 2 items should be compatible?





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