Fingerprint sensor not working..

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zone11
 
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Joined: Thu Mar 29, 2012 4:43 am

Fingerprint sensor not working..

Post by zone11 »

Hi there

Just got hands on my brand new fingerprint sensor. Wired up to my arduino as shown in the example (not that difficult :) ) the sensor doesn't power up.
The red backlight came up for a flash, then USB stopped working due overload.
OK, powersupply with current limiter set to 150mA, also over current. 200mA, still the same :cry:

So whats next? - Got a broken part?

Greetings from Switzerland,
Chris

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adafruit_support_bill
 
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Re: Fingerprint sensor not working..

Post by adafruit_support_bill »

Have not seen that problem before. Does the LED still flash on power-up with the current-limited supply?
Any obvious signs of a short-circuit, solder-bridge etc on the exposed circuitry?

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zone11
 
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Re: Fingerprint sensor not working..

Post by zone11 »

It did about four times, now it remains complete dark.
The two pcbs look fine. Should I disassemble the part to check the other pcb side?

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adafruit_support_bill
 
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Re: Fingerprint sensor not working..

Post by adafruit_support_bill »

That shouldn't be necessary. If you contact [email protected] with a link to this thread we can arrange for a replacement sensor.

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