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Using Demo Software w/ a FTDI

After making your connection with the 3.3V FTDI, connect the USB cable to your computer. Assuming that the FTDI drivers have been installed, make note of what COM port
on which the FTDI enumerated. On a Windows computer, I was able to view it in the device manager as shown below:

Opening and Connecting to the SDK_Demo.exe

For basic operation with the demo software, it is recommended to download the demo software development kit (SDK) that is linked in product page's documents section.
Each demo software is unique to that version of the scanner and it might not work with the other models.

To use the demo SDK on a computer:

1. Download the SDK_DEMO.exe from the product page under the “Documents” tab.
2. Unzip the folder.
3. Go to the directory that it was unzipped, which should look similar to this: …\20171129-SDK Demo Ver1.9\Release .
4. Open the SDK_DEMO.exe executable.
5. Select the COM port that the FTDI enumerated to in the Serial Port Number’s drop down menu.*
6. Select 9600 in the Baudrate’s drop down menu.
7. Click on the Open button.

*Note: The available COM ports range from "COM3" to "COM10". If your USB-to-serial converter enumerates to a number higher than that, you would need to go to your
computer's device manager to force it to a lower COM port number.

The image below shows how the SDK_DEMO.exe looks like before connecting:

 

Once the demo SDK has been opened, it will look like this:

Summary of Contents for GT-521F Series

Page 1: ...erprint identification to your project SparkFun offers a fingerprint scanner from ADH Tech designed to do just that The GT 521F32 and GT 521F52 includes an optical sensor for reading fingerprints and...

Page 2: ...ep in mind when integrating the fingerprint scanner in a project is the number of fingerprints that the device can hold The GT 521F32 costs less but it can hold only 200 fingerprints The GT 521F52 is...

Page 3: ...here is a marking next to the JST SH connector that indicates polarity The JST SH connector breaks out the pins for serial UART and power While the input voltage is between 3 3V and 6V the UART s logi...

Page 4: ...andards for colored cables For example the red wire in this circuit connects Rx to Tx Double check your connections before powering the scanner Option 2 Making a Custom Adapter If you are using the JS...

Page 5: ...he LV side to power the low side of the logic level converters After wiring the circuit it should look like this Option 2 Voltage Division w 3x 10kOhm Resistors Otherwise you could use 3x 10kOhm resis...

Page 6: ...other models To use the demo SDK on a computer 1 Download the SDK_DEMO exe from the product page under the Documents tab 2 Unzip the folder 3 Go to the directory that it was unzipped which should look...

Page 7: ...nd that the finger is placed in the same position during enrollment The template will have a number associated with the fingerprint scanner and it will be saved in its local database Identifying After...

Page 8: ...onnections are correct and the scanner is able to send receive commands The code sets up a the Arduino s hardware serial UART for debugging and tells the scanner to send serial debug messages The code...

Page 9: ...z FioV3 etc you would need to re configure the software serial pin definitions and adjust the connections Not all the pins can support change interrupts for a serial Rx pin depending on what Arduino m...

Page 10: ...perly since it did not have a lot of details I continued to test the drawing in test 1 to see when the scanner would accept the drawing Test 2 was successful in enrolling and identifying by adding a l...

Page 11: ...ner not recognizing your fingers when enrolling There can be issues trying to enroll when using the SDK_Demo exe or Arduino example code This is usually due to fingers being dry and not having good co...

Page 12: ...irectly to the USB port of your computer The image and table below shows the pinout Fingerprint Scanner USB Port Shield right most pin USB Shield not necessary if using a USB breakout board Tied to GN...

Page 13: ...management of a database on multiple fingerprint scanners from one server Node js There s an example in Node js with an API I have not tested this feature before but try looking at this GitHub reposi...

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