📢 Product Launch: HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers.
Robo Tech Valley is proud to introduce the HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers at the best price in BD. This module is a must-have tool for makers, electronics enthusiasts, students, and developers who want to add wireless communication to their embedded systems. With the ability to operate in both master and slave modes, the HC-05 is perfect for a wide range of wireless control and data transmission applications.
The HC-05 Bluetooth Module is widely used in DIY projects, robotics, IoT systems, wireless sensors, and even commercial products. If you are working with Arduino, ESP32, STM32, or Raspberry Pi and need a cost-effective Bluetooth solution for short-range serial communication, this is the ideal module for you.
📝 Product Overview: HC-05 Bluetooth Module
The HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers is based on the Bluetooth 2.0 + EDR protocol, which offers stable and efficient wireless communication with a range of up to 10 meters in open space. It communicates with microcontrollers via the UART (TX/RX) interface, making it extremely easy to integrate into existing projects using a serial communication protocol.
One of the key advantages of the HC-05 is its ability to function as either a master or slave device, which can be configured using AT commands. This makes it highly flexible for two-way wireless communication, whether you’re building a Bluetooth-based controller, data logger, or communication gateway.
📦 Specifications: HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers
| Feature | Details |
|---|---|
| Product Name | HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers |
| Bluetooth Version | Bluetooth 2.0 + EDR (Class 2) |
| Operating Voltage | 3.3V (compatible with 5V using voltage divider on RX pin) |
| Logic Level | 3.3V UART |
| Communication Interface | UART (TX/RX) |
| Default Baud Rate | 9600 bps (can be changed using AT commands) |
| Working Mode | Master or Slave |
| Communication Range | Up to 10 meters (open area) |
| Status Indicator | Onboard LED for power and Bluetooth status |
| Dimensions | Approx. 28mm x 15mm |
| Power Consumption | Idle: ~2mA; Active: ~8mA |
| Compatible Boards | Arduino, Raspberry Pi, ESP8266, ESP32, STM32, PIC, ARM, AVR |
⭐ Key Features of the HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers
✅ Reliable Wireless Serial Communication
Transmits and receives data over Bluetooth using the UART serial interface. Perfect for wireless communication between microcontrollers and Bluetooth-enabled devices like smartphones or PCs.
✅ Master/Slave Configuration
Easily configure the module as a master or slave using AT commands. Allows for flexible Bluetooth networking and device pairing.
✅ Compact and Lightweight
Its small size and light weight make it suitable for mobile or space-constrained embedded systems.
✅ Low Power Consumption
Draws minimal current, making it ideal for battery-powered devices and energy-efficient IoT projects.
✅ Easy to Use with AT Commands
Set the device name, change the baud rate, and configure roles using simple serial commands.
✅ Status LED Indicator
Built-in LED shows power and connection status, helping with debugging and connectivity checks.
✅ Wide Compatibility
Works seamlessly with all major microcontroller platforms including Arduino, Raspberry Pi, ESP32, STM32, and more.
✅ Affordable and Reliable
A cost-effective solution for adding wireless capability to your electronics project without compromising on quality.
🔧 Real-Life Applications of HC-05 Bluetooth Module
📲 Smartphone-Controlled Robots
Use your phone to wirelessly control robots via Bluetooth serial communication.
📶 Wireless Sensor Data Logging
Send temperature, humidity, or motion sensor data wirelessly to your smartphone or computer for monitoring.
🏠 Home Automation Systems
Create wireless control systems for smart lights, fans, and other home appliances using Bluetooth.
📡 IoT Devices
Use the module in local IoT networks where Wi-Fi isn’t available or practical.
📨 Serial Command Systems
Send and receive serial commands over Bluetooth to control or monitor devices remotely.
📚 Educational Kits
Perfect for school or college projects to help students learn about Bluetooth technology, UART communication, and embedded system design.
🎮 Bluetooth Game Controllers
Develop custom Bluetooth-based controllers or input devices for games and interactive systems.
🛍️ Why Choose Robo Tech Valley?
At Robo Tech Valley, we understand the needs of makers, engineers, and learners. That’s why we source only the best-quality components like the HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers at unbeatable prices in Bangladesh. Our products are tested, reliable, and ready to integrate into your next project.
We offer:
✅ Competitive pricing in BD
✅ Quality-tested components
✅ Technical support and tutorials
✅ Fast delivery and excellent customer service
Whether you’re building a hobby project, learning embedded systems, or prototyping a commercial product, Robo Tech Valley is your trusted partner in innovation.
📦 What’s in the Box?
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1x HC-05 Bluetooth Module – Wireless Serial Communication for Arduino, Raspberry Pi & Microcontrollers
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Pre-soldered header pins (ready to plug into breadboards or jumper wires)
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Basic usage guide available on request





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