#Weather proof arduino sensors code

In this article, the working principles of an ultrasonic distance sensor are explained in greater detail. So the distance between the sensor and the object is only half the distance that the sound waves traveled.įor more information on how ultrasonic sensors work, you can check out my article on the HC-SR04. This is because the sound waves traveled from the sensor to the object and back from the object to the sensor. Note that you need to divide the result by two. Ultrasonic distance sensors working principle.

At 20 ☌ the speed of sound is roughly 343 m/s or 0.034 cm/µs. Where Time is the time between sending and receiving the sound waves in microseconds. By measuring how much time passed between sending and receiving the sound waves, you can calculate the distance between the sensor and the object.ĭistance (cm) = Speed of sound (cm/µs) × Time (µs) / 2 These ultrasound waves get reflected by an object and the ultrasonic sensor detects them. As an Amazon Associate we earn from qualifying purchases.Īn ultrasonic distance sensor works by sending out ultrasound waves. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to products on.

#Weather proof arduino sensors code

MaxBotix MB7389 Arduino example code – Trigger with push button.MaxBotix MB7389 Arduino example code – Pulse width.MaxBotix MB7389 Arduino example code – Analog voltage.Wiring – Connecting MaxBotix MB7389 to Arduino UNO.