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Topic: Use R503 fingerprintscanner on Arduino? (Read 70 times) previous topic - next topic



On this Adafruit webpage: https://www.adafruit.com/product/4651 for the R503 fingerprint scanner, they attach it right on the I/O's of an Arduino Uno.

But, is this OK?
When I look at the datasheet, doesn't it mention that the UART needs 3.3V instead of the 5V

Can someone please tell me it's alright to hook it to a 5V Arduino?


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