flashtree FPM11A Green Light Optical Fingerprint Reader Sensor Module 6 Pins for Arduino Mega2560 UNO R3

Fingerprint Scanner works great. But - awesome bonus is - you can wire Blue (Touch VCC) and Yellow (Touch Signal High) - and then wrap your call to getFingerprintID(); inside a digitalRead(SENSOR_PIN) == HIGH. Of course, in setup(), you also need pinMode(SENSOR_PIN, INPUT); (and at the top of your program, define what pin will be you SENSOR_PIN... for me, I used 4 - since that would be right next to other pins being used: 2 & 3). const int SENSOR_PIN = 4; This way - your device is only scanning for prints when you touch it... and the LEDs stay off when you are not touching it.

This was the third fingerprint sensor we bought for a project, and it worked like a marvel. The 6-pin wire plugged easily into our breadboard and Arduino Uno R3, no soldering required. The fingerprint sensor itself was very efficient, and worked well with our project ( a fingerprint-based Arduino attendance system). Note that only four out of the six pins need to be used for most projects - wires red, green, white and black (no blue/yellow). Five Stars!

Worse luck ever, I order tow of this and none of them work. BLUE and RED to 5v and Black to Ground, Green RX (GPIO15), White TX (GPIO14).. Teste on Rapsberry pi 3, 3b+, 5 no luck.

These worked great on a lighting project I am working ob

Used it for Arduino, works well

Worked exactly as I hoped it would.

I needed this for a class for school....works just fine no complaints here

Works as expected. Update: Stopped working after a few days.