KE4011 Keyes DIY Electronic Brick Passive Buzzer Module

KE4011 Keyes DIY Electronic Brick Passive Buzzer Module

1. Introduction
The Keyes 2021 New DIY Electronic Brick Passive Buzzer Module is a high-quality component designed for electronics enthusiasts and educators. Manufactured with eco-friendly materials, this module ensures safety and durability. Unlike active buzzers, the passive buzzer requires external frequency signals to generate tones, making it versatile for electronic projects and experiments.

2. Features
- Eco-Friendly Material: Constructed with black eco-friendly materials compliant with modern safety standards, suitable for various environments.
- Tone Adjustment: Generates different tones based on the frequency of control signals, accommodating diverse audio requirements.
- Anti-Reverse Interface: Equipped with a 2.54mm red anti-reverse connector for secure and reliable connections.
- Compatibility: Compatible with various microcontroller boards (e.g., Arduino, Raspberry Pi) for flexible project integration.
- Easy Installation: Includes a 3-pin white anti-reverse cable for simplified wiring, accessible even for beginners.
- Mounting Holes: Two 3mm Lego-compatible holes allow easy fixation to Lego bricks or other structures.

3. Specifications
- Model: KE4011
- Buzzer Type: Passive Buzzer
- Cable Length: 200mm
- Operating Voltage: DC 3.3V - 5V
- Interface Type: 2.54mm 3-pin anti-reverse interface
- Mounting Hole Size: 3mm diameter
- Dimensions: 32mm x 23.5mm x 12mm
- Power Consumption: Approx. 20mA (at 5V operation)

4. Working Principle
The passive buzzer module operates based on external signal control:
- Power Connection: The module connects to a power supply via GND and VCC ports, operating within 3.3V to 5V to ensure proper functionality.
- Signal Control: The signal pin (S) receives frequency-based input from a controller. Higher frequencies produce higher-pitched tones, while lower frequencies generate lower-pitched tones.
- Connection Configuration: The red anti-reverse connector and matching cable ensure safe and efficient connections, minimizing wiring errors.

5. Pin Description
| Pin Name | Description |
|----------|---------------------------------------------------|
| VCC | Positive power supply (3.3V to 5V input) |
| GND | Negative power supply connection |
| S | Signal input pin for controlling buzzer tones |

- VCC: Connects to the positive terminal of the power supply. Ensure the voltage remains within 3.3V–5V to prevent damage.
- GND: Connects to the negative terminal (ground) for stable operation.
- S (Signal Pin): Receives frequency-based control signals from a microcontroller to generate corresponding audio tones.

6. Application Scenarios
The Keyes 2021 DIY Electronic Brick Passive Buzzer Module is widely used in:
- Education: Teaching buzzer principles and audio signal control in electronics courses and hands-on activities.
- Audio Projects: Creating music or sound effects for interactive electronic projects.
- DIY Projects: Integrating customizable tones into creative applications like electronic toys or alarms.
- Experimentation: Demonstrating the relationship between signal frequency and audio pitch in experiments.