r303a fingerprint sensor doesnot responding properly
Moderators: adafruit_support_bill, adafruit

Re: r303a fingerprint sensor doesnot responding properly

by adafruit_support_bill on Sun Jun 09, 2013 6:29 am

On the Mega, not all pins are supported for Software Serial. You have to use the pins listed below:

http://arduino.cc/en/Reference/SoftwareSerial
Not all pins on the Mega and Mega 2560 support change interrupts, so only the following can be used for RX: 10, 11, 12, 13, 14, 15, 50, 51, 52, 53, A8 (62), A9 (63), A10 (64), A11 (65), A12 (66), A13 (67), A14 (68), A15 (69).
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Re: r303a fingerprint sensor doesnot responding properly

by adafruit_support_rick on Sun Jun 09, 2013 8:40 am

What messages are you seeing in Serial Monitor?
Does the Fingerprint Sensor light up at all?
Is the cable connector seated properly in the sensor?

Post some clear, detailed, focused pictures showing the wiring on the Mega and on the sensor.

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Re: r303a fingerprint sensor doesnot responding properly

by Deserter on Tue Jun 11, 2013 7:49 am

how to view the code for reading the finger print?
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Re: r303a fingerprint sensor doesnot responding properly

by adafruit_support_rick on Wed Jun 12, 2013 10:06 am

Deserter wrote:how to view the code for reading the finger print?

Please refer to our tutorial
http://learn.adafruit.com/adafruit-opti ... int-sensor

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Re: r303a fingerprint sensor doesnot responding properly

by Deserter on Mon Jul 14, 2014 4:03 am

Hi I having a problem detecting my fingerprint hardware with my arduino mega 2560 the serial monitor shows "did not find hardware" have read the previous solutions but it does not come ok. what needs to be done now?
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Re: r303a fingerprint sensor doesnot responding properly

by adafruit_support_bill on Mon Jul 14, 2014 6:06 am

Post a photo that shows all of your connections between the sensor and the Arduino..
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