HC-06 Bluetooth Module – KSH 500 at HIMA TRONICS Mombasa – Top quality modules. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices.
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HC-06 Bluetooth Module

SKU: HMJ128 Category: Modules
KSH 500.00
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Product Description

HC-06 Bluetooth Serial Transceiver Module

= Wireless Serial Communication Module for Arduino and MCU Projects =

The HC06 is a Bluetooth 2.0+EDR serial transceiver module designed for simple wireless serial communication . It allows Arduino and other microcontrollers to communicate wirelessly with Bluetoothenabled devices like smartphones and PCs .

Slave Mode Only - Connects to master devices, ideal for remote control and data reception
Simple Serial Interface - Transparent UART communication with default 9600 baud rate
Supply voltage: 3.3V to 6V (3.3V logic levels)
Use a voltage divider (1kΩ/2kΩ) on RX pin for 5V Arduino connections
Default PIN: 1234; device name: HC-06

= Technical Specifications =

ParameterValue
Bluetooth Version2.0+EDR
Frequency Band2.4GHz ISM
Default Baud Rate9600
Supply Voltage3.3V to 6V
Operating Current8mA to 50mA
Communication RangeUp to 10 meters
Operating ModeSlave only

= Key Features =

Simple AT Command Configuration - Change name, PIN, or baud rate via serial terminal

Low Power Consumption - 8mA when connected, ideal for battery projects

Compact Size 27mm x 13mm footprint for spaceconstrained designs

Onboard Antenna Builtin 2.4GHz antenna, no external antenna needed

Default 9600 Baud - Works out of the box with Arduino SoftwareSerial

== Applications ==

  1. Wireless remote control for Arduino robots and cars
  2. Smartphone-controlled lighting and appliances
  3. Wireless sensor data transmission
  4. Bluetooth-based data logging
  5. IoT and home automation projects
  6. Wireless debugging and serial monitoring
Easy to Use Slaveonly design simplifies pairing and setup
Wide Compatibility - Works with Arduino, ESP8266, STM32, and Raspberry Pi

√ Default 9600 baud rate for plugandplay use

√ Includes LED status indicator (blinking = unpaired, solid = connected)

√ Works with popular Bluetooth Terminal apps on Android and iOS

= Connection Guide =

To Arduino (SoftwareSerial on pins 2 & 3) :

  • VCC: 5V (or 3.3V if available)
  • GND: GND
  • TXD: Arduino pin 2 (SoftwareSerial RX)
  • RXD: Arduino pin 3 (SoftwareSerial TX) via voltage divider
Use 1kΩ and 2kΩ resistors for 5V to 3.3V level shifting on RX pin
Use SoftwareSerial library to avoid conflict with hardware serial (pins 0 & 1)
Do not connect RXD directly to 5V Arduino pin - use voltage divider
Module is slaveonly cannot initiate connections to other devices

= AT Commands =

CommandResponseEffect
ATOKTest communication
AT+VERSIONOKlinvorV1.8Get firmware version
AT+NAMEOKsetnameChange module name
AT+PINOKsetPINSet pairing PIN
AT+BAUDxOKChange baud rate (x=1-9)
Baud rate codes1=1200, 2=2400, 3=4800, 4=9600(default), 5=19200, 6=38400, 7=57600, 8=115200
Send AT commands without line endings; commands must be sent within 1 second
The module is always in AT mode when not paired
Commands are not echoed - only response is shown
Baud change takes effect after module reboot

= Troubleshooting =

No AT response:

  • Set Serial Monitor to 9600 baud and No line ending
  • Ensure module is not paired to any device
  • Check power supply and wiring

No pairing:

  • Search for "HC-06" in Bluetooth settings
  • Use PIN 1234 (default)

LED not blinking:

  • Check 3.3V-6V power supply
  • Verify ground connection
  • Module may be damaged