Ultrasonic sensor HC-SR04 HCSR04 to world Ultrasonic Wave Detector Ranging Module HC SR04 HCSR04 Distance Sensor For Arduino

Technical parameters:1: Voltage: DC5V 2: Quiescent Current: <2mA2: level output: the output of the high-5V 4: level: the end of 0V3: Induction Angle: not more than 15 degrees: detection range: 2cm-450cm4: High precision: up to 0.3cm5.Panel wiring, VCC, trig 's (control side), the echo (receiving end), out (empty feet), GND Note:1.TRIP-pin internal pull-up 10K resistor, down TRIP microcontroller IO port pin, and then to a 10us pulse signal.2.OUT pin for this module as the switch output pin when the anti-theft module, ranging modules do not use this foot!3. The module should be inserted Fortunately, the circuit board re-energized, and avoid the high malfunction, if they have re-energized before they solve.4.This module can be provided ranging program: C51, PIC18F877 microcontroller Yoshitatsu three MCU test reference. Working principle:1. IO trigger ranging to at least 10us high signal;2.module automatically sends eight 40kHz square wave, automatically detect whether a signal return;3.a signal to return to a high IO output, high duration of the ultrasonic time from launch to return.4.Ultrasonic time from launch to return. Test distance = (time high * speed of sound (340M / S)) / 2.