KE4011 Keyes DIY Electronic Brick Passive Buzzer Module

1. Introduction 

The Keyes 2021 new DIY electronic building block passive buzzer module is a high-quality module designed for electronics enthusiasts and educators. Made with environmentally friendly materials, it ensures safety and durability. The passive buzzer requires an external signal to control its tone, making it suitable for various electronic projects and experiments.

2. Features 

• Environmentally friendly materials : Made of black environmentally friendly materials, meeting modern safety standards and suitable for various usage environments.

• Tone adjustment : The passive buzzer can emit different tones according to the frequency of the control signal, which is suitable for a variety of sound effect needs.

• Anti-reverse insertion interface : The module is equipped with a 2.54mm red anti-reverse insertion terminal to ensure the safety and reliability of the connection.

• Compatibility : The module is compatible with various microcontroller control boards (such as Arduino, Raspberry Pi, etc.), making it easy to implement various projects.

• Easy to install : Equipped with a 3-pin white reverse-insertion-proof connector, making the wiring process simple and convenient, suitable for beginners.

• Mounting holes : The module is designed with two LEGO-compatible mounting holes with a diameter of 3mm, making it easy to mount the module on LEGO or other devices.

3. Specifications 

• Model : KE4011

• Buzzer type : Passive buzzer

• Wire length : 200mm

• Operating voltage : DC 3.3V - 5V

• Interface type : 3-pin anti-reverse connector with a 2.54mm pitch

• Positioning hole size : 3mm in diameter

• Dimensions : 32mm x 23.5mm x 12mm

• Power consumption : Approximately 20mA (when operating at 5V)

4. Working Principle 

This passive buzzer module is controlled by an external signal, and its working principle is as follows:

• Power connection : The module is connected to the power supply through the GND and VCC ports. The operating voltage range is 3.3V to 5V to ensure the normal operation of the buzzer.

• Signal control : The signal terminal (S) receives a frequency signal from the controller to control the tone emitted by the buzzer. A higher frequency produces a higher pitch, and a lower frequency produces a lower pitch.

• Connection configuration : The modular design facilitates quick assembly and disassembly, while the red anti-reverse insertion terminals and wires ensure safe connection and reduce the risk of incorrect connection.

5. Foot position description 

The module's pin definitions are as follows:

• VCC : Connect to the positive terminal of the power supply to provide the required voltage to the module. Ensure the power supply is between 3.3V and 5V to avoid damage.

• GND : Connects to the negative terminal of the power supply to ensure the module works properly and provides a stable reference power.

• S (Signal Terminal) : Receives signals from the controller and generates sounds of different tones based on different frequencies.

6. Application Scenarios 

Keyes' new 2021 DIY electronic building block passive buzzer module is widely used in:

• Education : Used in electronic courses and practical activities to help students understand how buzzers work and audio signals.

• Sound effects projects : Electronic projects suitable for creating music or sound effects feedback.

• DIY projects : can be used to develop creative projects such as electronic toys and sound equipment.

• Experiment : Demonstrate the relationship between signal frequency and pitch in the experiment.