Problem With Fingerprint sensor

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gotron
 
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Problem With Fingerprint sensor

Post by gotron »

On 12/12/2014 we bought a #751 fingerprint sensor.
This is not working.
If the power sypply is connected, the sensor is flashing while it should be steady on.
Moreover, there is no signal.
We suppose this is not normal.

Rgds,
Nele Van den Driessche

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adafruit_support_rick
 
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Re: Problem With Fingerprint sensor

Post by adafruit_support_rick »

Please post clear, detailed pictures showing your wiring and connections.

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gotron
 
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Re: Problem With Fingerprint sensor

Post by gotron »

There are no photo's available as the customer already returned the item.

However, he tried to give a clear explanation on how he connected the fingerprint sensor:
First the #751 has been tested by connecting the power supply - however, it did not respond as it has to.
It has to burn constantly however, it flickered.
Further, they tried to connect with Arduino following the schema in the following link, however, this too, didn't work.

https://learn.adafruit.com/adafruit-opt ... th-arduino

Kind Regards,

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Re: Problem With Fingerprint sensor

Post by adafruit_support_rick »

The sensor does not stay lit. It flashes when power is first applied. It only lights up when it is commanded to record an image.

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