sonar

| sonar from a HC-SR04 sensor (ultrasonic sensor) with a raspberry |

materials

electronics

• raspberry
• screen (to support pygame UI output)
• wires
• HC-SR04 sensor
• servo motor

support

You can build the support with laser-cut mdf (like us) or with 3D printing. All files in the folder files.

connections

Just note that :

• servo pulse goes to GPIO19
• HC-SR04 trigger goes to GPIO18
• HC-SR04 echo goes to GPIO24 through resistor (see scheme)

Of course those are just the default values in the script, edit them at will.

Concept

The idea behind this project is to have a radar render of items detected by the ultrasonic sensor through a servo motor moving from 0 to 180 degrees.

Code

Sources

• Sonar Logo : sonar by Ian Rahmadi Kurniawan from the Noun Project
• Servo motor control : https://raspberry-pi.fr
• HC-SR04 control : https://raspberrypi-tutorials.fr