Thread: USB Voltmeter?
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Old 11-12-2008, 02:06 AM   #4 (permalink)
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The Arduino platform has six analog inputs, 0 to 5V range from ground.
You need voltage dividers for above 5V measuring, and three Avrduino's will have up to 18 analog input.

Commercial products look very expensive, such as following for 8 channel.
8 Channel Voltage Data Logger

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