Ultrasonic Sensor Raspberry Pi Python Code

Including showing how to wire up the sensor to the raspberry pi we also explore writing a python script that will utilize the hc sr04 ultrasonic sensor to calculate distance.

Ultrasonic sensor raspberry pi python code.

The ultrasonic sensor output echo will always output low 0v unless it s been triggered in which case it will output 5v 3 3v with our voltage divider. Python code as well as arduino. Rpi 3 https am. I have been asked to prepare a code that works on python to control 8 ultrasonic sensors connected to a raspberry pi board.

It s easy to use these ultrasonic distance sensors with python and circuitpython. Using a raspberry pi distance sensor ultrasonic sensor hc sr04 for many outdoor projects a distance measurement is necessary or advantageous. Now that we ve hooked our ultrasonic sensor up to our pi we need to program a python script to detect distance. We achieve this by measuring the time it takes the ultrasonic pulse being sent out to it being received back by the sensor.

While the arduino recorded around 10 values on an average for a person walking the rpi code was only able to record around 4 5 values. I set up the circuit on a breadboard which made it easier to connect a resistor voltage divider. These modules allow you to easily use python code to read the distance from the sensor. This i presume might be because of the reason i mentioned above.

Now let us see how to write the code for raspberry pi and ultrasonic sensor in the python shell in the raspberry pi. Here are some photos of my ultrasonic sensor connected to raspberry pi via the gpio header. Our hc sr04 sensor is connected to our raspberry pi. Here we begin the setup process of the ultrasonic sensor.

Raspberry pi python code for ultrasonic sensor. You can use the us 100 sensor with any circuitpython microcontroller board or with a computer that has gpio and python thanks to adafruit blinka our circuitpython for python. Some knowledge of how to set up a raspberry pi and run python code is assumed. The system shall be connected to a screen via an hdmi and it should show something like a radar monitor.

How to setup a hc sr04 ultrasonic sensor with the raspberry pi.