Description
HC-05 Bluetooth Module
A well-liked module like the HC-05 Bluetooth can give your projects two-way (full-duplex) wireless connectivity. With the help of HC-05, you can connect with any Bluetooth-enabled device, such as a phone or laptop, or with two microcontrollers like an , etc. and it requires , to connect.
Since the module uses USART to communicate, it is simple to connect to any microcontroller that supports USART. We can also set the HC-05 Bluetooth module’s default values using the command mode. Therefore, this HC-05 module can be the best option for you if you’re seeking a wireless module that can send data from your computer or mobile phone to a microcontroller or vice versa.
The HC-05 with Baseplate is a slave-only device. This means that it can connect to most phones and computers with Bluetooth but it cannot connect to another slave-only device such as keyboards and other . To connect with other slave devices a master module would be necessary such as the HC-05 module ,which can do both master and slave.
The slave mode in HC-05 Bluetooth cannot initiate a connection to another Bluetooth device but can accept connections. Master mode can initiate a connection to other devices.
Key Features:
- Working current: matching for 30 mA, matching the communication for 8 mA.
- With the computer and Bluetooth adapter, PDA, seamless connection equipment.
- Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards.
- Potter default rate of 9600, the user can be set up.
- Bluetooth protocol: Bluetooth Specification v2.0+EDR
- Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps.
- Security: Authentication and encryption.
- Profiles: Bluetooth serial port.
HC-05 Bluetooth Module Pin Diagram:
Bluetooth Module Pin Description
HC-05 Bluetooth Module Pin Description:
|
Pin Number |
Pin Name |
Description |
|
1 |
Enable / Key |
This pin is used to switch between command mode (set low) and Data Mode (set high). The default setting of this HC 05 Bluetooth module is Data Mode. |
|
2 |
Vcc |
This pin can be used to power the Bluetooth module. It has an operating voltage of +5V DC. |
|
3 |
Ground |
Connect the module’s ground pin to the Microcontrollers Ground Pin (GND). |
|
4 |
TX Transmitter |
Sends serial data to the MCU. This pin will distribute all Bluetooth data in the form of serial data to the Microcontroller. |
|
5 |
RX Receiver |
Obtain Serial Data. This pin will transmit all serial data that is provided to it over Bluetooth. |
|
6 |
State |
The on-board LED attached to the state pin can be used as feedback to see if Bluetooth is functioning properly. |
|
7 |
LED |
Indicates the status of Module
|
|
8 |
Button |
Used to control the Key/Enable pin to switch between Data Mode and command Mode |
HC-05 Default Values:
- Bluetooth Name: HC-05
- Password: 1234 or 0000
- Communication: Slave
- Mode: Data Mode
- Data Mode Baud Rate: 9600, 8, N, 1
Applications
- Can be used for wireless communication between two microcontroller units.
- Communicate with Laptop mobile phones etc.
- Data Logging
- Wireless Robots
- DIY Home Automation Projects
- GPS-based DIY projects.
Package Includes:
- 25 x HC-05 Bluetooth Module
Specifications:
| Serial communications | 9600-115200bps |
| Frequency | 2.4~2.524 GHz |
| Power Supply | 5VDC |
| Operating Current | 30mA |
| Range | <100m |
| Dimensions | 30mm x 14mm x 2.2 mm |
| Weight | 5 grams |
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