User manual

Dual Ultrasonic Sensor Module(ST1099/ME140)

1.Instructions

The HC-SR04 is an inexpensive ultrasonic sensor that can sense not only if an object presents

itself, like a PIR sensor, but can also sense and relay the distance to that object.

Features:

 Power Supply :+5V DC

 Quiescent Current : <2mA

 Working Currnt: 15mA

 Effectual Angle: <15°

 Ranging Distance : 2cm – 400 cm/1" - 13ft

 Resolution : 0.3 cm

 Measuring Angle: 30 degree

 Trigger Input Pulse width: 10uS

2. Pin Instruction

Pin Name

Description

“Vcc”

Power (5V DC)

“Trig”

Trigger the transmit signal

“Echo”

Echo the received echo signal

“Gnd”

Gnd

3. Example

This example allows you display the defect distance on your ARDUIN’s Serial window.

Pin connection:

Vcc========== Power(5V DC)

Trig========== 12

Echo========== 13

Gnd===========Gnd

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Dual Ultrasonic Sensor Module(ST1099/ME140) 1.Instructions The HC-SR04 is an inexpensive ultrasonic sensor that can sense not only if an object presents itself, like a PIR sensor, but can also sense and relay the distance to that object. Features:         Power Supply :+5V DC Quiescent Current : <2mA Working Currnt: 15mA Effectual Angle: <15° Ranging Distance : 2cm – 400 cm/1" - 13ft Resolution : 0.3 cm Measuring Angle: 30 degree Trigger Input Pulse width: 10uS 2.
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Picture connection as below: Example code: *********Code begin********* #define trigPin 13 #define echoPin 12 #define led 11 #define led2 10 void setup() { Serial.
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digitalWrite(led2,LOW); } else { digitalWrite(led,LOW); digitalWrite(led2,HIGH); } if (distance >= 200 || distance <= 0){ Serial.println("Out of range"); } else { Serial.print(distance); Serial.