Wi-fi Ultrasonic Radar System with Arduino [Full Guide]

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The Wi-fi Ultrasonic Radar described here’s a scaled-down model of a real radar system. It utilises ultrasonic sound waves to detect close by objects, presenting their exact distance (in cm) and angle (in levels) on a ten.9cm (4.3-inch) TFT LCD monitor. The TFT LCD encompasses a radar dial-type graphical show with an object scanning animation, creating the looks of a real radar monitor.

The gadget performs real-time object scanning over a 0-180° (half-circle) vary. When an object is detected inside this vary, its distance and angle are displayed on the monitor. Fig. 1 illustrates the three phases of the radar show on the LCD.

As proven in Fig. 1, the TFT LCD supplies a radar dial-type half-circle show with angles 15°, 30°, 45°, and so forth. It additionally exhibits the scanning course of animation. When an object is detected, it shows its distance and angle and marks the radar dial with pink traces.

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As it is a wi-fi ultrasonic radar system, it consists of two items: the radar transmitter unit, and the radar receiver unit.

Demo Video

The radar transmitter unit constantly scans a half-circle space with a radius of roughly 500cm utilizing ultrasonic sound waves. When it detects any object, it measures its distance and angle and transmits each items of knowledge to a distant receiver situated at a distance. The transmission vary is multiple kilometre in line of sight (LoS). The receiver shows the gap and angle of the item on the TFT LCD and exhibits the radar dial and scanning course of animation.

The transmitter makes use of an ultrasonic distance measurement (UDM) sensor (HC-SR04), an Arduino Nano board because the microcontroller unit (MCU), and a wi-fi UART RF transceiver module (HC-12). The receiver additionally contains an Arduino board and an HC-12 module, together with a ten.9cm (4.3-inch) SPI TFT LCD with a decision of 480×320. The parts wanted for the gadget are listed within the Invoice of Supplies desk.