Ultrasonic Sensor ( Distance Measuring Module ) Recorder Module The flip-flops are also called

The flip-flops are also called as latching devices meaning it can remember one single bit of data and latch the output based on it

Finger Print Sensor Module or Finger Print Scanner is a module which captures finger’s print image and then converts it into the equivalent template and saves them into its memory on selected ID (location) by Arduino

Operating voltage : 5V

Obstacle detection

Ultrasonic Sensor ( Distance Measuring Module ) Recorder Module The flip-flops are also calledIntroduction: HC SR04 ultrasonic module can offer non contact distance sensing function, the range from 2cm to 400cm. and the range accuracy is up to 3mm; the module includes ultrasonic transmitter, receiver and control circuit. The sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance to target is determined by measuring the time required for the echo return. The module is based