• HC-08 Bluetooth 4.0 BLE Serial UART Module at an angle showing the main chip and antenna.
  • Pinout of the HC-08 Bluetooth module breakout board showing VCC, GND, TXD, RXD, and STATE pins.
  • Detailed pin definition table for the HC-08 Bluetooth module listing all I/O functions.
  • Technical drawing showing the dimensions of the HC-08 Bluetooth module as 26.9mm by 13.0mm.
  • Pin diagram for the surface-mount HC-08 bare module with all 30 pins numbered.
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HC-08 Bluetooth 4.0 BLE Serial UART Module

HC-08 Bluetooth 4.0 BLE Serial UART Module

HK$59.00
HK$59.00
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Easily add powerful and efficient wireless communication to your next project with the HC-08 Bluetooth 4.0 BLE Module. This module is perfect for hobbyists and professionals alike, offering a simple way to connect your microcontroller (like an Arduino, ESP32, or Raspberry Pi) to a smartphone, computer, or another HC-08 module.

Based on the Bluetooth 4.0 BLE (Bluetooth Low Energy) standard, it provides a stable connection over a long distance while consuming minimal power, making it ideal for battery-powered applications such as IoT devices, wearables, and remote sensors. The straightforward UART serial interface allows for quick integration into your existing projects with minimal coding.

 

Key Features:

  • Bluetooth 4.0 BLE Technology: Utilizes the low-energy standard for power-efficient wireless data transmission.
  • Long Transmission Range: Capable of communicating up to 80 meters in an open environment.
  • Simple UART Interface: Easily communicates with virtually any microcontroller using standard serial (TX/RX) pins at a 3.3V TTL level.
  • Ultra-Low Power Consumption: With a sleep current of just 0.4µA, it's perfect for long-lasting battery-powered projects.
  • Integrated Onboard Antenna: The built-in PCB antenna provides excellent performance without the need for external components.
  • Compact Size: The small form factor allows for easy integration into space-constrained designs.

 

Potential Applications:

  • Internet of Things (IoT) devices
  • Remote control systems
  • Wireless data logging and acquisition
  • Wearable technology
  • Home automation

 

Technical Specifications:

  • Model: HC-08
  • Working Frequency: 2.4GHz
  • Communication Interface: UART (3.3V TTL)
  • Working Voltage: 2.0V - 3.6V (Module only)
  • Transmission Distance: Up to 80 meters (open space)
  • Transmit Power: +4dBm (Max)
  • Receiver Sensitivity: -93dBm @ 1Mbps
  • Air Data Rate: 1Mbps
  • Currents:
    • Transmit: 31.6mA
    • Receive: 15.8mA
    • Sleep Mode: 0.4µA
  • Module Size: 26.9mm x 13mm

 

Breakout Board Pinout:

  • STATE: Connection status output (Low when not connected, High when connected)
  • RXD: Serial Data Receive (Connect to microcontroller's TX)
  • TXD: Serial Data Transmit (Connect to microcontroller's RX)
  • GND: Ground
  • VCC: Power Supply (The breakout board supports 3.2V - 6V)
  • KEY: Used to enter AT command mode (Pull HIGH before powering on)
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