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zfm20's Issues

Unknown Fingerprint

I have tested the zfm20 using the SFGDemo windows application, and it works fine. However, when i use this package, and run the example code, I always get 'Unknown Fingerprint".

Example code (Connected to COM3):
var FingerPrint = require("zfm20"),
sensor;

sensor = new FingerPrint();

sensor.connect({
port : "COM3"
baudrate : 57600,
});

sensor.on("ready", function(){

sensor.read()
.ok(function(id){
    console.log("Fingerprint found! ID",id);
})
.fail(function () {
    console.log("Unknown fingerprint");
})
.wait(function(){
    console.log("Put fingerprint");
});

});

The connection is ok when i run this code:

var FingerPrint = require("zfm20"),
sensor;

sensor = new FingerPrint();

sensor.ports(function(port){
console.log(port); //check available port
});

Any advice?

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