Print("The distance from object is ",distance,"cm") while True:Ĭomplete Code Listing from machine import Pin Moving out of the function we now create a loop that will run the function every second. print("The distance from object is ",distance,"cm")ġ1. Print a message to the Python Shell showing the distance. We multiply the journey time (timepassed) by the speed of sound (343.2 m/s, which is 0.0343 cm per microsecond) the product of that equation is divided by two as we do not need the total journey distance, just the distance from the object to the sensor. This variable will store the answer of the equation. Create a new variable, timepassed, which will store the value total time taken for the pulse to leave the sensor, hit the object and return back to the sensor as an echo. This will store the current timestamp in microseconds to the signalon variable. Create another while loop, this time to check if an echo has been received.
#Utime earbuds update
If no echo pulse is received, update a variable, signaloff so that it contains a timestamp in microseconds.
Create a while loop to check the echo pin. This will send a short pulse from the ultrasonic sensor and then turn off the pulse. Pull the trigger pin high for five microsends before pulling the trigger pin low. Pull the trigger pin low, to ensure that it is not active, then pause for two microseconds. Create a function, ultra(), which will contain the code necessary to take a reading. The echo pin receives the reflected pulse, so echo is an input. For example our trigger pin is used to send a pulse of current, as such it is an output pin. These objects configure the GPIO pins of the Pico to be used with the ultrasonic sensor. Create two new objects, trigger and echo. The former is used to control GPIO pins, the latter is a library of time based functions. Import the Pin class from the machine library and then import the utime library. With the circuit built, connect your Raspberry Pi Pico and open the Thonny application.ġ. (Image credit: Tom's Hardware) Software Setup of Ultrasonic Sensor on Raspberry Pi Pico
0 kommentar(er)
