I just bought the finderprint sensor #751 and was trying to follow the tutorial. I first tried the 'blank' sketch (grn=d1,wht=d0), downloaded and ran the windows program sfgdemo.exe. It connected ok on the COM port where the arduino is but when I click on capture nothing happens. I tried changing the baud rate to match the enroll sketch (57600) but still nothing. The one thing I noticed is in the video it shows the scanner with a red light but mine the red light only comes on briefly when I first apply power (5v). I did solder the jst wires to a header and tested them with a continuity check so I feel the wiring is ok.
Then I tried the enroll sketch (running 1.0.3) after changing the wiring to uses pins 2=grn ,3=wht, opened the serial monitor and it said "Found fingerprint sensor!" but when I type in a number to enroll and click send, and place my finger over the sensor nothing happens. (again no red light on the sensor like the video shows)
Attached is pic of the wiring. Thoughts ?
- photo.JPG (39.27 KiB) Viewed 384 times