Good day! I will be creating a project made from Ultrasonic Sensor and Arduino.
The objective of the project is to measure distance from an object and determine the time time necessary for an ultrasonic wave to travel from the transmitter to the receiver after being reflected from the target. I will be displaying its elapsed time on a lcd screen.
Can someone guide me on how can I code to compute for the the time of flight?
Thank you!
Maybe this is of use?
https://www.arduino.cc/en/Tutorial/Ping?from=Tutorial.UltrasoundSensor
Regards
Colin.
Hi! So the time of flight is the time the PulseIn became Low to High? How can I show its elapsed time in code?
Or the time of flight is simply the microseconds in the codes?
long microsecondsToInches(long microseconds) { // According to Parallax's datasheet for the PING))), there are 73.746 // microseconds per inch (i.e. sound travels at 1130 feet per second). // This gives the distance travelled by the ping, outbound and return, // so we divide by 2 to get the distance of the obstacle. // See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf return microseconds / 74 / 2;
Adjustments need to be made for temperature. 11300 fps is only accurate at 25C.
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