I have two waterproof CDS sensors reading LED output in a vat of pulp that will determine the weight of hand made paper by reading density between the two. The CDS is reading fine on the serial monitor but the LED's are barely lighting even though the voltage is just over 5v on the perf board rails.…

DIY perf board shield

Gixxer October 11, 2012, 5:51pm 13

how are you powering this? maybe if using a USB, then you can try external power supply?

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