HC-05 Integrated Bluetooth Serial Pass-Through Module, Wireless Serial for Arduino – KSH 450 at HIMASTORES Mombasa – best electronics in Kenya
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HC-05 Integrated Bluetooth Serial Pass-Through Module, Wireless Serial for Arduino

SKU: HMJ593 Category: Modules
KSH 450.00
In Stock

Product Description

HC05 Integrated Bluetooth Serial PassThrough Module

Wireless Serial Communication for Arduino Projects

The HC05 is a Bluetooth serial passthrough module that enables wireless serial communication between Arduino boards and Bluetooth-enabled devices like smartphones and laptops.

Simple Wireless Connectivity - Replaces physical serial cables
Master/Slave Capability - Flexible for various applications
Requires 3.6V to 6V power supply
Default baud rate is 9600 with 1234 pairing PIN
Do not exceed 6V input voltage

Technical Specifications

ParameterValue
Bluetooth VersionV2.0+EDR
Frequency Band2.4GHz ISM
Operating Voltage3.6V to 6V
Default Baud Rate9600
Communication Distance10 meters (open space)
InterfaceUART TTL (3.3V)
Current Consumption50mA (active)

= Key Features =

PassThrough Mode Transparent serial data transfer

AT Command Support - Configurable parameters

Dual Role Capability - Master or slave mode

LED Status Indicator - Flashes for connection status

Onboard Antenna - No external antenna needed

= Applications =

  1. Wireless Arduino programming
  2. Smartphone remote control
  3. Wireless sensor data logging
  4. Bluetooth robot control
  5. IoT bridge devices
Easy Pairing - Simple 1234 default PIN
Plug and Play - Works with SoftwareSerial library

√ Ready for breadboard use

√ Compatible with standard Arduino

√ Includes breakout pins for easy wiring

Connection Guide

Standard wiring:

  • VCC → 5V Arduino pin
  • GND → Ground
  • TX → Arduino RX pin
  • RX → Arduino TX pin (via voltage divider)
Use voltage divider for RX connection (5V to 3.3V)
Use SoftwareSerial for flexible pin selection
TX outputs 3.3V - compatible with 5V inputs
Do not connect RX directly to 5V

Troubleshooting

Module not found:

  • Check baud rate matches
  • Verify power supply
  • Avoid loose connections

Pairing fails:

  • Use 1234 PIN
  • Reset module
  • Avoid metal enclosures
Tested with 99%+ Arduino compatibility
Includes online documentation
ParameterValueStatus
HC-05 Module3.6-6VIn Stock
Default PIN1234Ready

√ One-year warranty

√ Includes pin headers

ArduinoBluetoothWireless