Description
Bluetooth TTL Module HC-05 6-Pin with Button
The Bluetooth TTL Module HC-05 6-Pin with Button is a wireless serial communication module designed to provide Bluetooth connectivity between microcontrollers, computers, smartphones, and other compatible devices.
Based on the popular HC-05 Bluetooth module, it provides a convenient way to add wireless serial communication to Arduino, robotics, automation, and DIY electronics projects. The onboard button can be used for module control and configuration functions depending on the module version.
The module communicates with a microcontroller through a TTL serial interface (UART), making it suitable for projects that need wireless data transmission without requiring a wired serial connection.
Key Features
- HC-05 Bluetooth wireless communication module
- 6-pin interface
- TTL UART serial communication
- Built-in push button
- Suitable for wireless data transmission
- Compact PCB design
- Easy to integrate into DIY electronics projects
- Suitable for Arduino and compatible microcontrollers
- Useful for robotics and automation projects
- Can communicate with Bluetooth-enabled devices
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Bluetooth TTL Serial Module |
| Module | HC-05 |
| Communication | Bluetooth |
| Interface | TTL / UART |
| Pin Count | 6 Pin |
| Control | Onboard Button |
| Application | Wireless Serial Communication |
| Suitable For | Arduino, Microcontrollers, Robotics & DIY Electronics |
Typical 6-Pin Interface
Depending on the module version, the 6-pin header may include:
| Pin | Function |
|---|---|
| VCC | Power Supply |
| GND | Ground |
| TXD | Transmit Data |
| RXD | Receive Data |
| STATE | Bluetooth Status |
| EN / KEY | Configuration / Mode Control |
Note: Pin labeling and functions can vary between HC-05 module variants. Always check the markings on the specific board before wiring.
Applications
- Arduino Bluetooth projects
- Wireless serial communication
- Robot control
- Bluetooth-controlled cars
- Home automation
- Wireless sensor monitoring
- Microcontroller communication
- DIY electronics projects
- Robotics projects
- PC-to-microcontroller communication
- Smartphone-controlled projects
Compatibility
The HC-05 can be used with compatible:
- Arduino boards
- Microcontrollers with UART/TTL
- Robotics controllers
- Embedded systems
- DIY automation projects
- Bluetooth-enabled computers and mobile devices
Important Note
The HC-05 is commonly used as a Bluetooth serial communication module, but exact electrical specifications, pin arrangement, firmware behavior, and supported Bluetooth features can vary between module versions. Verify the module’s board markings and electrical requirements before connecting it to your controller.
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