Fingerprint Sensor with FTDI breakout on a PC

by osbock on Mon Mar 26, 2012 12:56 pm

I just got my Fingerprint sensor, and it's super cool!
I'm planning on writing a python library/command line utility for its use with a PC.
I've got it hooked up to an adafruit FTDI breakout. The wiring (labels) are reversed from the Arduino, so while the tutorial says to wire white to Digital Pin 0 (labeled RX) it actually goes to TX on the breakout, and green goes to RX.

Image
The one other gotcha, was windows assigned something like com28 to the FTDI breakout, and the windows test program only goes to com16. You can fix this in the device manager, by opening up the appropriate port, go to port settings,advanced, and change the COM Port Number. Then you can assign it a lower number (it would only let me use 1 and 2, as I think the rest were taken up by various Arduinos I've plugged in!)
Fire up the demo program, and you're cooking with gas! I'll be updating as I develop the code.
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Re: Fingerprint Sensor with FTDI breakout on a PC

by adafruit on Mon Mar 26, 2012 2:46 pm

nice work!
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Re: Fingerprint Sensor with FTDI breakout on a PC

by osbock on Tue Apr 10, 2012 3:49 pm

My excellent technician mounted the reader and FTDI breakout in a small project box. I thought people might like to see his artful work (He doesn't want me to tell his name)
Here's the whole album of internal views:
https://picasaweb.google.com/105717937237957047535/FingerprintReader?authuser=0&feat=directlink
Here you see how he mounted the FTDI breakout without mounting holes:
Image
The nice opening for the finger/thumb which angles out to accommodate larger thumbs. There are also rubber bumpers on the bottom to keep it stable as you press in.
Image
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Re: Fingerprint Sensor with FTDI breakout on a PC

by adafruit on Tue Apr 10, 2012 4:16 pm

nice!
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Re: Fingerprint Sensor with FTDI breakout on a PC

by osbock on Tue Apr 10, 2012 4:33 pm

By the way, the command line interface is ready for release:
https://github.com/osbock/Baldwisdom/tr ... /adafinger
It supports the following modes:
    scanning (only returning when a valid finger is read)
    passfail
    enroll
There's command line help for the modes. I've only tested it on windows, but it should work on linux if you use the commandline switch to tell it which port.
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Re: Fingerprint Sensor with FTDI breakout on a PC

by george graves on Wed Apr 11, 2012 12:05 am

What kind of glue is he using on that plastic?
New blog - www.digitalunderpants.com
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Re: Fingerprint Sensor with FTDI breakout on a PC

by osbock on Wed Apr 11, 2012 6:02 am

I think it's Lock-tite superglue for circuitboards (444?) I can check when I get in to work.

I confirmed it's Locktite 444. I'm not sure if he used the accelerator.
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