The document discusses interfacing an ultrasonic sensor and buzzer with an Arduino board. It provides the pin connections for an ultrasonic sensor, with the trigger pin connected to digital pin 9 and echo to pin 8. It also lists the buzzer connections, with positive to digital pin 6 and negative to ground. The goal is to program the Arduino board to use the ultrasonic sensor to measure distance and control the buzzer.

1. SENSOR INTERFACING
WITH ARDUINO
Prepared by T.Srilatha,Asst.Prof,ECE Dept 1

2. HC-SR04 Ultrasonic Sensor Pinout
Prepared by T.Srilatha,Asst.Prof,ECE Dept 2

3. Program1-Arduino interfacing with
ultrasonic sensor & Buzzer
Ultrasonic
sensor
connections
• Vcc to 5V
• GND to gnd
• Trig to 9th pin
• Echo to 8th
pin
Buzzer
connections
• + to 6th pin
• - to GND
Prepared by T.Srilatha,Asst.Prof,ECE Dept 3
1 Vcc
2 TRIG 3 ECHO
4 GND