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Ultrasonic Distance Sensor - Serial Out

Product Code: SEN-273
Availability: In Stock

ULTRASONIC HC-SR04  Product features

               Ultrasonic ranging module HC - SR04 provides 2cm - 200cm the ranging accuracy can reach to 3mm.
The module includes ultrasonic transmitter, receiver and control circuit.

The basic principle of work

•    Using IO trigger for at least 10us high level signal,
•    The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
•     IF the signal back, through high level , time of high output IO duration is the time from
      sending ultrasonic to returning.Test distance = (high level time×velocity of sound (340M/S) / 2).

Easy to Interface conversion boards avilable now ( PWM TO UART , OBSTACLE) - based on PIC microcontroller

•    Obstacle Interface Board.
•    UART & Obstacle Output Board.

Interfacing sensor Pins

-> 5V Supply
-> Trigger Pulse Input
<- Echo Pulse Output
-> 0V Ground

Electric Parameters

•    Working Voltage DC 5 V
    Working Current 15mA
    Working Frequency 40Hz
    Max Range 200cm
    Min Range 2cm
    MeasuringAngle 15 degree
    Trigger Input Signal 10uS TTL pulse
    Echo Output Signal Input TTL level signal and the range in proportion
•    Dimension 45*20*15mm

Pin discription of board



O/P=when obstacle detect out put pin go high.

TX=Gives serial out put.

example readings= R40


                               R42 varies according to​ the distance vary.


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