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I am having difficulty setting up my fingerprint Scanner - TTL (GT-511C3). I have bought it from http://www.w11stop.com/manufacturer-sparkfun I'm using the library from https://github.com/sparkfu/Fingerprint_Scanner-TTL/tree/master/FPS_GT511C3 and none of the example sketches work.

I have a message printing to the serial before the fps.open() command and a message printing afterwards, but I only ever see the first message. Does this mean the arduino is stuck trying to open the scanner?

Brian Tompsett - 汤莱恩
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Madiha
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1 Answers1

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try and get 'Demo software' from this link

and see if the software can access the sensor.

nilaci
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