Hello,
I am currently working on trying to use a fingerprint sensor with my Raspberry Pi Pico. However, the fingerprint sensor is not lighting up nor connecting to my Pico. The PID is 4690 and my order number is #2292968-4794941265.
I purchased this item on January 7.
Any help is appreciated.
Basic Fingerprint Sensor with Socket Header Cable Not Working
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- yipaud
- Posts: 2
- Joined: Sat Jan 07, 2023 1:52 am
Basic Fingerprint Sensor with Socket Header Cable Not Working
- Attachments
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- error in connecting to Thonny and pico
- IMG_4698 Small.jpeg (25.43 KiB) Viewed 47 times
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- product not lighting up when plugged into pico
- IMG_4697 Small.jpeg (26.4 KiB) Viewed 47 times
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- image of product
- Image Small.jpeg (29.91 KiB) Viewed 47 times
- adafruit_support_carter
- Posts: 29481
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Basic Fingerprint Sensor with Socket Header Cable Not Working
The yellow wire appears to be disconnected? That's the TX line.
https://www.adafruit.com/product/4690
https://www.adafruit.com/product/4690
Red is 3.3V power
Yellow is TTL Serial TX
White is TTL Serial RX
Black is Ground
- yipaud
- Posts: 2
- Joined: Sat Jan 07, 2023 1:52 am
Re: Basic Fingerprint Sensor with Socket Header Cable Not Working
Hello,
We tried using the yellow cable, and the fingerprint scanner does not light up. It does connect to the computer but is unable to scan the fingerprint so there is no input accepted.
We tried using the yellow cable, and the fingerprint scanner does not light up. It does connect to the computer but is unable to scan the fingerprint so there is no input accepted.
- Attachments
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- Image of fingerprint scanner not lighting up when connected
- IMG_5784 Small.jpeg (30.06 KiB) Viewed 40 times
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- Screenshot of computer output where fingerprint is not detected even when finger is on the scanner
- Screen_Shot_2023-01-31_at_2.09.41_PM.png (138.02 KiB) Viewed 40 times
- adafruit_support_carter
- Posts: 29481
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Basic Fingerprint Sensor with Socket Header Cable Not Working
Can you post a closer photo of the board showing the pins being used:
Also post (or link to) the complete code listing for what is being run on the board.
Also post (or link to) the complete code listing for what is being run on the board.
Please be positive and constructive with your questions and comments.