ESP8266 Node MCU & Ultrasonic HCSR-04[ Accurate measurement ]
This Tutorial, We Are Going To used ESP8266 12E Node MCU with Ultrasonic Sensor Module (HC-SR04). HC-SR04 Is Used To Measure The Distance Between 2cm to 4meter With Ranging Accuracy Up to 3 Millimeter. For reading the complete tutorial visit our main article. The material required for this tutorial are:- The Jumpers wires Arduino Board For (5v) Supply Ultrasonic Sensor Module Solderless Bread Board And ESP8266 Module It Self. The Working Principle Of Module Is Very Simple. It Emits Ultrasonic Sound Which Travelle With The Air If Any Obstacle Comes In The Path It will bounce back from the module. consider the travel time speed of the sound by this formula:- velocity=distance/time The ultrasonic module having 4 pins GND VCC ECHO TRIGGER As you can see the interfacing image on the video To generate the ultrasonic sound we need to send a trigger o...
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