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40Hz Ultrasonic Range Detection Sensor
A guide to using the DYP-ME007 with Arduino in order to calculate distances from objects. In this case I’m also altering the output of an LED with PWM according to how close an object is to the sensor. So the nearer you are the brighter the LED. So if we start with the DYP-ME007, it’s an IC that works by sending an ultrasound pulse at around 40Khz. It then waits and listens for the pulse to echo back, calculating the time taken in microseconds (1 microsecond = 1.0 × 10-6 seconds). You can trigger a pulse as fast as 20 times a second and it can determine objects up to 3 metres away and as near as 3cm. It needs a 5V power supply to run. Adding the DYP-ME007 to the Arduino is very easy, only 4 pins to worry about. Power, Ground, Trigger and Echo.
DYP-ME007 Datasheet
