DIY Arduino Radar with Ultrasonic Sensor & Servo – 3D Print Files (STL)

Description

DIY Arduino Radar System

This is a radar project built around an Arduino and an ultrasonic sensor. The sensor sits on a servo motor, sweeps back and forth, and measures the distance to whatever is in front of it. Those readings go to a Processing sketch on your computer, which draws them on a radar screen in real time.

The display shows the sweep and the detected objects live while the sensor moves. The build is not complicated, but you do need to get the wiring right and upload the Arduino sketch. The radar screen is an optional Processing sketch on your computer; without it, the Serial Monitor shows the same readings as text.

What you actually get

The download package holds the STL files; the code is free in the tutorial:

• STL files for the base, the servo holder and the sensor holder, ready to 3D print
• The Arduino sketch and the Processing radar display: in the free tutorial, ready to copy (link below)

The STL files hold the ultrasonic sensor on top of the servo and the servo on the base. If you do not have a 3D printer, you could also just tape the sensor to the servo horn. It works, it just looks less clean.

How it works

The Arduino sweeps the servo from 15 to 165 degrees and back. At each angle, it takes a distance reading from the ultrasonic sensor using the trigger and echo pins. It sends the angle and distance over serial to the computer. The Processing sketch reads those values and draws them as a radar sweep on screen.

If you want the full wiring diagram and step by step instructions, check the tutorial linked below. The tutorial covers everything from wiring on the breadboard to uploading code.

Full Tutorial: DIY Arduino Radar Build Guide