These blocks are for use with the Fingerprint Scanner (#29126) [1] and the Propeller Activity Board WX, Propeller FLiP or Other board types. Not available for Badge or Scribbler Robot board types.
New to this sensor? Click here to see an example schematic and quick Blockly program [2] to help you get started.
This block launches a processor automatically. Use only one instance of this block per project.
Use the Fingerprint scanner initialize block to specify which Propeller I/O pins are connected to your device. I/O pins available for this use will vary with board type.
If you have defined a constant using the constant define block, the constant will show up in all of the pin menus and can be selected instead of a numbered pin:
If you forget to use this block in your project, a triangle warning icon will appear on other Fingerprint scanner blocks as a reminder.
The Fingerprint scanner capture block lets you manage the fingerprint scans that are stored on the device. The action options from the drop-down menu are:
The Fingerprint scanner scan block can perform three different actions and provides a value based on the outcome of the action. (However, none of these actions capture and save a new scan onto the device.)
The Fingerprint Scanner can scan and store up to 1000 fingertip image captures. Your BlocklyProp project can compare a new scan to a specific capture by ID, or search all its captures for a match.
Using the connections shown in the wiring image above, this example uses the Terminal to prompt a user to scan and assign an ID to their fingerprint, and then check that their fingerprint matches the assigned ID.
Links
[1] https://www.parallax.com/product/29126
[2] https://learn.parallax.com/support/reference/activity-board-wx-block-reference/sensor/fingerprint-scanner/fingerprint-scanner