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Reference: RBD-1354
Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-0351
Contactless transmission of data and supply energy (no battery needed) Operating distance: Up to 100mm (depending on antenna geometry) RoboticsBD Operating frequency: 13.56MHz Data transfer: 106 kbit/s Data integrity: 16 Bit CRC, parity, bit coding bit counting Anticollision Typical ticketing transaction: <100 ms ( including backup management)...
Reference: 0245
Choose your desire Resistor value from below:
Reference: 0031
3 Types Available (Please select from option) 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-0768
Size: 5mm Color: RED Head Shape: Round Lens Appearance: Transparent
Reference: 1353
Length: 12.5 inches/30 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-0761
Breadboard friendly Mounting Style: Through Hole Mounting Direction: Vertical
This module uses a Local-clone chip.
However, for a Bluetooth module with a verified genuine CSR chip (HC-05), click here.
Store Pickup Available!
Free Ship Over 5000 BDT
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The HC-05 Bluetooth Module with Local CSR Chip is a cost-effective wireless communication solution designed for beginner to intermediate projects. Supporting both Master and Slave modes, this module is ideal for wireless serial data exchange between microcontrollers and Bluetooth-enabled devices like PCs or smartphones. Though this version uses a clone/local CSR chip, making it slightly less stable than the original, it still functions reliably for standard Arduino and embedded applications.
It operates on Bluetooth v2.0 + EDR protocol, using GFSK modulation, and provides a communication range of up to 10 meters. It’s perfect for budget-conscious hobbyists looking to integrate Bluetooth into their microcontroller projects. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Supports both Master and Slave Modes for flexible usage.
Bluetooth v2.0 + EDR, suitable for wireless serial data communication.
Clone CSR chip – affordable but might be less stable than the original.
UART serial communication; default baud rate: 9600 bps.
Class 2 emission, range up to 10 meters in open space.
LED indicators for power and Bluetooth pairing status.
Compact and breadboard-friendly design (43mm x 16.5mm).
Compatible with Arduino, Raspberry Pi, ESP32, STM32, and other MCUs.
Low power consumption (30mA pairing, 8mA during communication).
Great for DIY automation, data logging, and wireless control systems.
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Arduino Wireless Control (e.g., robot car, smart lights).
Serial Data Logging with Bluetooth to smartphone or PC.
Home Automation Projects with Bluetooth interface.
IoT Prototyping on a budget.
Wireless communication between two microcontrollers.
Bluetooth remote control in robotics and automation.
Educational setups to teach UART and wireless basics.
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| General Specifications | |
| Model | HC-05 (Local CSR Chip) |
| Chip Type | Clone/Local CSR |
| Bluetooth Version | v2.0 + EDR |
| Modes | Master / Slave |
| Frequency | 2.4GHz ISM Band |
| Modulation | GFSK |
| Emission Power | ≤4dBm, Class 2 |
| Sensitivity | ≤-84dBm at 0.1% BER |
| Voltage Range | 3.6V – 6V DC |
| Default Baud Rate | 9600 bps |
| Operating Current | 30mA (pairing), 8mA (active) |
| Communication Interface | UART (TXD, RXD) |
| Max Range | 10 meters (open space) |
| Temperature Range | -20°C to +75°C |
| Dimensions (LxWxH) | 43mm x 16.5mm x 7mm |
| Weight | 5g |
| Shipment Weight | 0.01 kg |
| Shipment Dimensions | 5 × 3 × 1 cm |
Please allow 5% measuring deviation due to manual measurement.
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One of the easiest ways to spot the difference between an original HC-05 module and a clone lies in the Bluetooth chip size and quality.
The original HC-05 uses a genuine CSR chip, which is slightly larger and provides more reliable Bluetooth communication, better range, and full AT command support.
Clone versions often come with smaller, unbranded chips, even falsely labeled as "CSR". These clones may lack proper protocol support, have limited AT commands, and exhibit unstable or slow connections.
Backed by a reliable CSR chipset
Better signal stability and communication range
Compact and easy to integrate into projects
Ideal for Arduino and microcontroller applications
Full support for configuration and firmware upgrades
| Feature | CSR Chip (Genuine) | Clone CSR Chip (Chinese or non-genuine) |
| Chipset | Original CSR (Cambridge Silicon Radio) UK chip | Copy or alternative low-cost chipset |
| Stability | High – better signal strength, less dropout | Lower – occasional pairing issues or dropouts |
| AT Command Reliability | Fully supported and well-documented | Sometimes inconsistent AT command behavior |
| Firmware Upgradability | Often upgradeable | Often locked or unreliable firmware |
| Price | Slightly higher | Cheaper |
| Module Name | HC Type | Chip Quality | Key Notes |
| 1. HC-05 CSR Chip | HC-05 | Generic CSR | May be reliable if true CSR, but unverified origin |
| 2. HC-05 Genuine CSR Chip | HC-05 | Genuine | Best quality among HC-05, fully supports Master/Slave |
| 3. HC-05 Clone CSR Chip | HC-05 | Clone | Might face instability, but works for basic use |
| 4. HC-06 CSR Chip | HC-06 | Generic CSR | Slave only, check CSR chip authenticity |
| 5. HC-06 Genuine CSR Chip | HC-06 | Genuine | Best among HC-06, reliable slave communication |
| 6. HC-06 Clone CSR Chip | HC-06 | Clone | Basic functionality, lower reliability |
For advanced control (Master/Slave, Arduino to Arduino):
→ HC-05 Genuine CSR Chip
For simple, reliable communication (e.g., Arduino to Android):
→ HC-06 Genuine CSR Chip
For budget or experiments:
→ Clone modules are fine, but test each thoroughly.
1 x Arduino Bluetooth Module HC-05 Local CSR Chip
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The latest price of Arduino Bluetooth Module HC-05 Local Chip in Bangladesh is BDT 349 You can buy the Arduino Bluetooth Module HC-05 Local Chip at best price from our RoboticsBD or visit RoboticsBD Office.
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Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. |
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Product Images are shown for illustrative purposes only and may differ from the actual product. |
Reference: RBD-0040
Bluetooth 2.0 Module Based on CSR BC04 Chip – Ideal for reliable wireless communication. Slave Mode Only – Perfect for receiving data from smartphones or other master devices. Wide Operating Voltage (3.3V to 6V) with onboard regulator for easy integration. Built-in 2.4GHz PCB Antenna – Supports wireless range up to 10 meters. Simple UART Interface (VCC,...
Reference: RBD-0905
HC-05 Bluetooth Module (CSR Chip) with Master/Slave mode support. Bluetooth v2.0 + EDR, compatible with most microcontrollers and devices. UART Serial Communication with default baud rate 9600 bps. Wireless Range up to 10 Meters using Class 2 emission. Reliable GFSK Modulation and Strong Signal Sensitivity (–84dBm at 0.1% BER). Supports Embedded Projects,...
Reference: RBD-3431
Original CSR BC417 Chipset for high-performance and stable Bluetooth communication. Supports Both Master and Slave Modes – fully configurable via AT commands. Bluetooth 2.0 + EDR Protocol for fast data transfer and low power consumption. Wide Compatibility: Works with Arduino, Raspberry Pi, ESP32, STM32, and more. 6-Pin Interface with Built-in 3.3V...
Reference: RBD-3432
Original CSR BC417 Chipset for stable and reliable Bluetooth communication. Slave Mode Only – ideal for receiving data wirelessly from smartphones or PCs. Supports Bluetooth 2.0 + EDR with Serial Port Profile (SPP) for seamless UART communication. Wide Compatibility: Works with Arduino, Raspberry Pi, ESP32, STM32, and other MCU platforms. Compact Design...
Reference: RBD-2505
RS232 Bluetooth Serial Adapter Communication Master-Slave Module
Reference: RBD-0040
Bluetooth 2.0 Module Based on CSR BC04 Chip – Ideal for reliable wireless communication. Slave Mode Only – Perfect for receiving data from smartphones or other master devices. Wide Operating Voltage (3.3V to 6V) with onboard regulator for easy integration. Built-in 2.4GHz PCB Antenna – Supports wireless range up to 10 meters. Simple UART Interface (VCC,...
Reference: RBD-0439
Bluetooth Protocol: Bluetooth Specification V4.0 BLE USB Protocol: USB V2.0 Operating Frequency: 2.4GHz ISM band Modulation Mode: GFSK (Gaussian Frequency Shift Keying) Transmitting Power: ≤4dBm Sensitivity: ≤-84dBm at 0.1% BER It’s easy to use and completely encapsulated. You can set it as slave or master. You can use AT command set the baud rate....
Reference: RBD-1773
Supply Voltage: 5V USB / 3.7V lithium battery Output Port: 3-wire audio interface/DIY pad Output Type: Analog signal Bluetooth name: VHM-314-V3.0 Bluetooth version: 5.0 Bluetooth passcode: no password Sound source: Bluetooth. USB-PC input(after the back pad is connected, the computer can be connected as a sound card though Micro) Operation method:...
Reference: RBD-1806
Based on ESP32 240MHz Xtensa dual-core 32-bit microprocessor Operating Voltage: 2.7V – 4.2V Working Current: 60mA Battery Charging Current: 500mA
Reference: RBD-0905
HC-05 Bluetooth Module (CSR Chip) with Master/Slave mode support. Bluetooth v2.0 + EDR, compatible with most microcontrollers and devices. UART Serial Communication with default baud rate 9600 bps. Wireless Range up to 10 Meters using Class 2 emission. Reliable GFSK Modulation and Strong Signal Sensitivity (–84dBm at 0.1% BER). Supports Embedded Projects,...
Reference: RBD-1928
Frequency: 2.4GHz ISM. Protocol: BLE 4.0. Max transmitting power: max. 4dBm. Modulation System: GFSK. Serial Baud Rate: 1200 to 115200 bps. Reference Distance: 80 meters.
Reference: RBD-1558
TTGO Meshtastic T-Beam V1.1 ESP32 915Mhz or 433Mhz (Ships Random) WiFi Bluetooth ESP32 GPS NEO-6M SMA 18650 Battery Holder OLED (915Mhz OLED)
Reference: RBD-3439
HC-06 Bluetooth Module (Local/Clone CSR Chip) – Low-cost Slave-only module Based on Bluetooth v2.0 + EDR protocol with onboard CSR BC04 Clone Chip Reliable UART Serial Communication; default baud rate: 9600 bps Built-in 2.4GHz PCB antenna for up to 10m range in open space Works with Arduino, Raspberry Pi, ESP32, and other microcontrollers Ideal for DIY...
Reference: RBD-3440
Bluetooth 2.0 Module Based on CSR BC04 Chip – Ideal for reliable wireless communication. Slave Mode Only – Perfect for receiving data from smartphones or other master devices. Wide Operating Voltage (3.3V to 6V) with onboard regulator for easy integration. Built-in 2.4GHz PCB Antenna – Supports wireless range up to 10 meters. Simple UART Interface (VCC,...
Reference: RBD-1189
Wavelength: 850nm Emission Distance: 7 Meters / 23Ft Voltage: DC 1.2-1.3V Polarity: Anode (Longer Part) | Cathode (Shorter Part)
Reference: RBD-1605
Hold 2 standard 18650 batteries. Wire Length: 15 cm. Output: 7.2v. Dimension (Appro.) : 76 x 40 x 20 mm Weight: 12gm High-quality plastic material
Reference: RBD-0652
Constant 9V Output till lasts Metal Jacket Body Good Built Quality and hence Leakproof Easy to install and Replace Corrosion free Connector Point for long-term use 0% Mercury and Cadmium. Environment-friendly OEM Compatible. RoboticsBD
Reference: RBD-0687
Detection distance: 2 ~ 30cm Detection angle: 35 ° Comparator chip: LM393 3mm screw holes for easy mounting
Reference: RBD-2536
Small PCB mountable 12V active electromagnetic buzzer Great for adding audio alert to electronic designs Operates on 12V supply Uses a coil element to generate an audible tone
Reference: RBD-1354
Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-0015
2 connections for 5V ‘hobby’ servos connected to the Arduino’s high-resolution dedicated timer 4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, internal kickback protection diodes. Can run motors on 4.5VDC to 25VDC. Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5%...
Reference: RBD-1061
BO Series motor with 100-150 RPM options Operates at 6V, ideal for small to medium robots Lightweight, easy to install with mounting holes Suitable for DIY projects and mobile robot cars Cost-effective with plastic gear construction
Reference: RBD-1183
Tire with sponge liner for more strength With upgraded tire tread for greater friction New design wheel for better combination with the motor Diameter: 65 mm Width : 28 mm The material of Wheel: High-strength plastic The material of Tyre: Rubber Color: Yellow
Reference: 0031
3 Types Available (Please select from option) 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-0015
2 connections for 5V ‘hobby’ servos connected to the Arduino’s high-resolution dedicated timer 4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, internal kickback protection diodes. Can run motors on 4.5VDC to 25VDC. Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5%...
Reference: RBD-0323
Microcontroller ATmega328 (SMD) – Interface CH340G Operating Voltage: 5V Input Voltage (recommended): 7-12V Digital I / O Pins 14 (of which 6 provide PWM output) RoboticsBD Analog Input Pins: 6 A programming cable is included.
Reference: RBD-0837
Capacity (mAh): 960-1500 Output Voltage: 3.7V High energy density High working voltage for single battery cells. Pollution-free Long cycle life ***It's a clone battery so the ampere couldn't be guaranteed. RoboticsBD
Reference: RBD-1605
Hold 2 standard 18650 batteries. Wire Length: 15 cm. Output: 7.2v. Dimension (Appro.) : 76 x 40 x 20 mm Weight: 12gm High-quality plastic material
Reference: RBD-0376
Current Sense for each motor. RoboticsBD Heatsink for better performance. Power-On LED indicator. Double H bridge Drive Chip: L298N. Operating Voltage(VDC): 5~35 Peak Current (A): 2 Continuous Current (A): 0-36mA No. of Channels: 2 Over-Current Protection (A): Yes Thermal Protection: Yes
This module uses a Local-clone chip.
However, for a Bluetooth module with a verified genuine CSR chip (HC-05), click here.
