Hello everyone! Today, I am sharing a perfect electronic project for beginners — using the STC89C52RC microcontroller + LCD1602 + HC-SR04 ultrasonic module to create a distance measuring device that can display distance in real-time! The cost is less than 30 yuan, and the difficulty is comparable to building blocks. Once completed, it can also … Read more
Recently, I have been learning STM32 to create a simple application, and I thought I would share an article. The microcontroller used in this article is the STM32F103C8T6, the ultrasonic distance measuring module is the HC-SR04, and the distance results are displayed using a 0.96-inch OLED screen module. Effect Display The display result when the … Read more
Click the blue text above to follow us Embedded Training – Choose Jufeng Smart Link Introduction to Ultrasonics What is ultrasonic? Ultrasonic waves are sound waves with frequencies higher than the audible range of the human ear (approximately above 20 kHz). In this chapter, we will introduce the HC-SR04, a common ultrasonic sensor module used … Read more
Click on the above“Mechanical and Electronic Engineering Technology” to follow us The ultrasonic sensor is an electronic sensor based on acoustic principles. It measures the distance between the sensor and an object by emitting ultrasonic pulses and receiving reflected signals, and is used to detect the presence of objects. It has widespread applications in modern … Read more
Arduino ULTRASONIC Sensor HC-SR04 Hack for Smart Fans!
Example Effect Press the serial monitor, and you can see that the measured distance is 9.8cm-10.1cm with an error of about 0.2cm. HC-SR04 An ultrasonic sensor used for distance measurement, widely applied in robotics to avoid obstacles and measure distances. Its module uses Trig to trigger distance measurement, which emits 8 40kHz square waves and … Read more