In this tutorial, you will learn how to send WhatsApp messages directly from an Arduino UNO R4 WiFi using the CircuitDigest Cloud Whastapp API. Instead of using a GSM module, SIM card, or complex ...
This project demonstrates how to interface an HC-SR04 ultrasonic distance sensor with an SSD1306 OLED display using the STM32 Blue Pill microcontroller. The system measures distances and displays them ...
Ultrasonics refers to signals that are above the human hearing span (>20 kHz), and usually in the 40- to 70-kHz range. These signals are used like radar—they’re radiated toward a target and reflected ...
Abstract: In this paper, we present a prototype of a miniature radar system using the ESP32 microcontroller and an HC-SR04 ultrasonic sensor. The prototype utilizes a servo motor to rotate the ...
It’s pretty easy to take a balloon, fill it up with helium, and send it up in to the upper atmosphere. It’s much harder to keep track of it and recover it when it falls back to Earth. If you’re trying ...
Abstract: The paper presents a pioneering approach to revolutionizing non-touch screens into touch-enabled interfaces by leveraging ultrasonic sensor technology. The focal point of this research lies ...
Wire the HC-SR04 ultrasonic sensor to the ESP32 as shown in the following schematic diagram. We’re connecting the Trig pin to GPIO 2 and the Echo pin to GPIO 1, but you can use any other suitable pins ...
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