fingerprint sensor

by bogeyer on Wed Dec 26, 2012 12:36 pm

I have a adafruit fingerprint scensor and an arduino uno. When i hook the sensor up to the board (exacly how the instructional video says) and power it up the scensor blinks red one time, then goes dormant. But if I unplug it from the power scource, and then plug it back in, it will blink red once, and go dormant. It will do this every time and i cant figure out whats roungh.
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Re: fingerprint sensor

by adafruit on Wed Dec 26, 2012 1:31 pm

sounds right to us, keep going with the tutorial
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Re: fingerprint sensor

by bogeyer on Wed Dec 26, 2012 1:55 pm

well then whats the next step, because i cant figure it out
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Re: fingerprint sensor

by adafruit_support_rick on Wed Dec 26, 2012 9:20 pm

Are you following the tutorial?
If you're following the tutorial, where exactly have you got stuck?
If you have only been watching the video, check out the tutorial instead.
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Re: fingerprint sensor

by bogeyer on Thu Dec 27, 2012 1:46 pm

The very first step, when i wire everything up and power it up the scanner will not light up, it flashes a bright red light once and then goes dormant. If i unplug the power and then plug it back in it will do the exact same thing, blink red once, and then go dormant. It doesn't respond, the arduino cant find it and it just doesn't work
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Re: fingerprint sensor

by bogeyer on Thu Dec 27, 2012 1:49 pm

Personally i think it might just be a bad fingerprint sensor
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Re: fingerprint sensor

by adafruit on Thu Dec 27, 2012 2:39 pm

its supposed to flash when you plug it in, thats it booting up. it will ONLY light up once you have the code working
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Re: fingerprint sensor

by adafruit_support_rick on Thu Dec 27, 2012 2:50 pm

bogeyer wrote:. It doesn't respond, the arduino cant find it and it just doesn't work

The first step in the tutorial is to connect it to a windows computer, and configure it with a windows program. Does the windows program not see the sensor? Are you certain that you have connected the sensor to the computer properly, and have you loaded the proper arduino sketch?

You say that the arduino can't find it. What sketch are you running on the arduino? The fingerprint sensor won't do anything without an appropriate arduino sketch loaded and running.
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Re: fingerprint sensor

by bogeyer on Thu Dec 27, 2012 11:58 pm

im sorry for the inconvenience, i think this should be the last thing but im now haveing the problem that when i verify the enroll schetch it highlights the line " Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial); " and says " Adafruit_Fingerprint does not name a type " i just cant figer out how to fix it. And since it wont verify it wont upload and thats where im stuck.
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Re: fingerprint sensor

by adafruit_support_bill on Fri Dec 28, 2012 6:52 am

Adafruit_Fingerprint does not name a type

You do not have the library installed in the right place.
Close the Arduino IDE.
Then download this library: https://github.com/adafruit/Adafruit-Fi ... or-Library
And install it according to this tutorial: http://www.ladyada.net/library/arduino/libraries.html
Re-open the Arduino IDE and load the example sketch and it should compile.
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Re: fingerprint sensor

by bogeyer on Fri Dec 28, 2012 11:15 am

Thank you guys im sorry for the trouble, im a little new at this but you guys have been a huge help thank you.
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Re: fingerprint sensor

by adafruit_support_rick on Fri Dec 28, 2012 11:17 am

No trouble at all. That's what we're here for!
Glad you got it working :D
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