Ultrasonic Ranging Alarm DIY Kit HC-SR04 Distance Measurer Soldering Project

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Ultrasonic Ranging Alarm DIY Kit HC-SR04 Distance Measurer Soldering ProjectDescription Item model number GY21652-1 Batteries Required? Yes Power Source dc Display Style digital or led Product Dimensions 3.94 x 1.97 x 0.7 inches Display Type digital or led Item Weight 0.12 Kilograms Batteries Included? No Included Components pcb board；resistors and other components

• 【Ultrasonic Range Alarm Kit】: After soldering, you\'ll have a practical ultrasonic distance measurer kit. The real-time measurement is displayed on the digital tube, and corresponding LED lights will light up for a more intuitive data readout. Plus, when the measured distance falls below a set threshold, the electronic kit will emit a warning beep, alerting you instantly.
• 【Functions & Features】: Measures distances from 0 to 270cm. The first LED light turns on when the distance exceeds 30cm, and all LEDs light up when the distance surpasses 270cm. Customize the obstacle avoidance distance with two simple buttons for quick adjustments (increase or decrease). This DIY soldering kit is not only a great way to learn electronics but also a practical tool for everyday use.
• 【Operational Principle】: The ultrasonic ranging system is based on the reflection of acoustic waves when encountering obstacles. The HC-SR04 ultrasonic sensor measures the time difference between transmitted and received ultrasonic waves to calculate the distance between the obstacle and the sensor.
• 【STEM School Learning Kit】: The connection that was clearly mapped and labeled on the board makes it easy to solder. In addition to teaching fundamental mechanical and electronic concepts, this soldering practice kit is beginner-friendly, appealing to all skill levels. Perfect for hands-on projects, STEM learning, and obstacle detection applications!
• 【Paper Installation Manual】: This solder practice kit includes a color-printed user manual that guides you through the installation process step-by-step with clear graphics and text. It makes assembly straightforward and enjoyable. But please note, this soldering kit requires certain foundation of basic electronic theoretical knowledge and soldering and hands-on ability.

Product description MIOYOOW HC-SR04 Ultrasonic Ranging Alarm DIY Kit How to Use:

1、Turn on the switch, and the digital display will automatically show the current measured distance.

2、Press SW1 (+) or SW2 (–) to set the alarm distance. When the actual distance is less than the set value, the buzzer will beep. If the set value is 0, the alarm function is disabled.

Key Circuit Principles Used in This Kit

1. Transmitter Circuit: The transmitter generates high-frequency ultrasonic waves by using an oscillator to drive the ultrasonic transducer, causing it to vibrate and emit sound. This demonstrates how electrical signals can be converted into mechanical vibrations.

2. Receiver Circuit: The receiver captures the ultrasonic waves reflected from objects and converts them into weak electrical signals, which are then amplified and filtered so the system can accurately process the information.

3. Time Measurement: The circuit measures the time interval between sending and receiving the ultrasonic waves. Using this time and the speed of sound, it calculates the distance, demonstrating timing and measurement principles in electronics.

4. Control and Logic Circuit: A microcontroller or logic circuit coordinates sending pulses, receiving signals, calculating distance, and controlling the display, ensuring all parts work together correctly.

5. Display and Alarm Circuit: The measured distance is shown on an LED, 7-segment display, or LCD, and a buzzer can alert when an object is too close, combining electronic display and warning functions.

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