Radar Emulator with Arduino and Python

An Arduino-based radar project is implemented here using an Arduino, HC-SR04 ultrasonic distance sensor, MG90S micro servo motor, and Python code run on a Raspberry Pi. The goal of this project is to introduce a novel concept related to real-world technology, but implemented through inexpensive tools available to the maker and aspiring engineer. The HC-SR04 uses sound waves to approximate the distance between its receiver and an object in the distance, while the MG90S servo rotates in a prescribed fashion according to pulse-width modulation signals controlled by the Arduino board. In order to visualize the outputted angular position and approximate ranging of the HC-SR04 - Python code was implemented on a Raspberry Pi to create a plan position indicator on a polar plot. This PPI gives the user a way of visualizing the objects that surround the motor and ultrasonic sensor, much like a radar approximates the objects surrounding its base station. Several skills used in this tutorial can be applied to real-world applications, whether through obstacle detection, motor control, distancing and ranging, or even a new tool for visualizing data.

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The word radar is a combination of ‘RAdio Detection And Ranging’ - which describes the function of early radar systems that were developed to detect and range approaching enemy aircraft using radio waves. Commonly, radar systems use a visualization tool called a plan position indicator (PPI), which places points in a polar configuration to represent objects occupying space in the range of the detector (read more about radar: Introduction to Radar Systems). In this tutorial, an ultrasonic sensor (HC-SR04) will be used in place of a radio emitter; and a plan position indicator will be constructed in Python by recording the angular movements of a servo motor.
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The replication of a radar system involves two essential components: a ranging device and an angular motor/detector. As stated above, the ranging device can be any device that detects distance from a stationary point. The HC-SR04 ultrasonic device will be used, however the VL53L0X ranging sensor (uses the time-of-flight technique with a 940nm laser) has also been used and works just fine with this tutorial as well.
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The graphical user interface (GUI) allows users to stop the program or close the plot and exit the program. Meanwhile, the plot should be updated every 5 degrees (about every 300ms), with scatter points being placed where objects are detected by the HC-SR04. There is also a sweeping arm that is part of the plan position indicator, which notifies the user of the approximate location of the motor or area being ranged.

[andrestovar]

good evening, could you help me? I run the program in python and it hangs blank and appears as if it were loading, and nothing appears.
Thank you

[anggrahafidz]

Hi ! I want to do this project without a Raspberry Pi, is it possible ? I want to use my computer.

[luigisapio]

In the display not appear the axis and semicircles, what am i wrong?

[PoojanP-etfk]

How to make...pls make a tutorial, and pls give codes

[gulagaram]

In the display not appear the axis and semicircles, what am i wrong?