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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 CSR chip of unknown origin, which may be a clone. However, it is still expected to perform reliably.
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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No Replacement
The HC-05 Bluetooth Module (CSR Chip) is a versatile and compact wireless communication module designed for seamless integration with microcontrollers like Arduino, Raspberry Pi, and more. Unlike HC-06, the HC-05 supports both Master and Slave modes, making it suitable for a wide range of serial communication applications. It operates on Bluetooth v2.0 + EDR protocol using the reliable GFSK modulation technique for strong and stable data transmission. The module communicates via UART and comes preconfigured with a default baud rate of 9600 bps. Whether you're developing wireless data transfer solutions, remote control systems, or embedded Bluetooth applications, the HC-05 offers dependable performance with a range of up to 10 meters in open space. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Supports Master and Slave Modes – Highly adaptable for different wireless setups.
Bluetooth v2.0 + EDR Compliance for fast and secure data transmission.
Default UART Baud Rate of 9600 bps, user-configurable via AT commands.
Integrated CSR Bluetooth Chip with high performance and power efficiency.
Low Power Consumption – Matching communication current: 8mA.
Strong Signal Sensitivity with –84dBm at 0.1% BER.
Wireless Range up to 10 Meters in open environments.
Compact PCB Design (43mm x 16.5mm x 7mm) with onboard status LEDs.
Compatible with Arduino, STM32, ESP32, Raspberry Pi, and other MCUs.
Widely Used in IoT, GPS, Industrial Automation, and Robotics Projects.
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Embedded Wireless Communication between microcontrollers and mobile devices.
Bluetooth-Enabled Robotics for real-time remote control.
IoT Data Transmission and Monitoring applications.
GPS Receivers and Bluetooth-enabled tracking systems.
Wireless Serial Logging for industrial and consumer electronics.
Bluetooth-Controlled Home Automation like lights, fans, and appliances.
Educational and DIY Electronics Projects involving serial data exchange.
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| General Specifications | |
| Model | HC-05 |
| Bluetooth Version | v2.0 + EDR |
| Operating Mode | Master / Slave |
| Frequency | 2.4GHz ISM Band |
| Modulation | GFSK |
| Emission Power | ≤ 4dBm, Class 2 |
| Sensitivity | ≤ -84dBm at 0.1% BER |
| Operating Voltage | 3.6V – 6V DC |
| Operating Current | 30–50mA |
| Communication Interface | UART (TXD, RXD) |
| Default Baud Rate | 9600 bps |
| Operating Range | Up to 10 meters (open space) |
| Communication Speed | Async: 2.1Mbps / 160 kbps; Sync: 1Mbps |
| Security | Authentication and Encryption |
| Operating Temperature | -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 - CSR Chip
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The latest price of Arduino Bluetooth Module HC-05 in Bangladesh is BDT 380 You can buy the Arduino Bluetooth Module HC-05 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. |
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Reference: RBD-0094
The Arduino Uno R3 High-Quality Edition Arduino UNO in Bangladesh Micro-controller : ATmega328. Operating Voltage : 5V. Input Voltage (recommended) : 7-12V. Digital I/O Pins : 14 (of which 6 provide PWM output). Analog Input Pins : 6. The Arduino Uno R3 High-Quality Edition embodies superior craftsmanship and meticulous attention to detail, resulting in...
Reference: RBD-0439
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Reference: RBD-1407
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Reference: RBD-1557
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Reference: RBD-1558
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Reference: RBD-1582
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Reference: RBD-1671
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Reference: RBD-1773
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Reference: RBD-1806
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Reference: RBD-3431
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Reference: RBD-1856
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Reference: RBD-3318
Sometimes a simple analog control device can be the perfect tactile solution for your project, but they can be surprisingly hard to come by. Luckily we've got a low-cost, quality Mini 2-Axis Analog Thumbstick to fulfill your directional analog input needs!
Reference: RBD-2294
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Reference: RBD-2928
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Reference: RBD-2305
WS2812B RGB LED 8-Bit Ring with individually addressable LEDs Features 8 WS2812 5050 RGB LEDs in a compact 32mm outer diameter circular board Constant current drive (~18mA per LED) for consistent brightness at 5V Requires a microcontroller with an 8MHz or faster processor for precise control Equipped with solder pads and mounting holes for easy integration
Reference: RBD-3165
The ADS1115 ADC Module is a high-precision, 16-bit analog-to-digital converter designed for applications requiring accurate and reliable signal conversion. Compact and efficient, this module offers wide input voltage support, low current consumption, and versatile input options. With an integrated programmable comparator and onboard reference voltage, it...
Reference: RBD-0832
Power supply: 4.5V – 5.5V, 3.3V voltage regulator circuit board Positioning holes: 4 M2 screws positioning hole diameter of 2.2mm Control Interface: GND, VCC, MISO, MOSI, SCK, CS Size: 45 x 28mm Net weight: 6g
Reference: RBD-2488
Support Hardwired TCP/IP Protocols: TCP, UDP, ICMP, IPv4 ARP, IGMP, PPPoE, Ethernet 10BaseT/100BaseTX Ethernet PHY embedded Auto-Negotiation (Full-duplex and half duplex) Support Auto MDI/MDIX Simultaneously Supports to 4 independent sockets 0.18 µm CMOS technology 3.3V operation with 5V I/O signal tolerance Provide Serial Peripheral Interface (SPI MODE...
Reference: RBD-0990
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Reference: RBD-2491
ATX Power Supply Breakout Board 3.3V, 5V, 12V and -12V Output Terminals ATX power supply breakout board allows for easy connection to the outputs of a standard ATX style PC power supply with 20 or 24 pin connections. Easily supply power to your projects from a high-quality and inexpensive (ofter surplus) PC-style power supply. This board provides +3.3V,...
Reference: RBD-2545
Quectel EC200A-CN LTE Cat4 Module GSM GPRS MINI 4G To RJ45 Kit With 100M Ethernet PortEC200ACNDA: (China and India) FDD: B1/B3/B5/B8 TDD:B34/B38/B39/B40/B41 WCDMA:B1/B5/B8 GSM:B3/B8 IPEX1 generation 4G antenna interface Reserved for RoboticsBD
Reference: RBD-2539
Baud rate: 300 – 9216000bps, automatically detecting the serial signal data rate Load capacity: support multipoint, each converter allows RS485 interface device to connect 32 Interface Protection: TVS tube protection, USB self-recovery protection Support Windows98/ME/2000/XP/WIN7/Vista, Linux, Mac It can be up to 32 devices on the bus.
Reference: RBD-2220
Good PRINT PACK design, very beautiful. 8 world of the three primary colors (red-green-blue) LED color, scanning control mode. Applicable for various platforms, such as 51 / AVR / AVR / ARM / for Arduino All kinds of platforms.
Reference: RBD-0922
Dimensions: 91 x 21 x 30 mm(LxWxH) Weight: 18 gm. Voltage: 3.3V or 5V. Port: Analog. Resistance: 10K. Appn: Raspberry-Pi projects. DIY projects., Arduino projects.
Reference: RBD-2857
Brand: DFRobot
The DFRobot Solar Power Manager series are designed for IoT projects and renewable energy projects, providing safe and high-efficiency embedded solar power management modules for makers and application engineers. This medium-power high-efficiency solar power management module allows you to charge a 12V lead-acid battery with a maximum of 4A using a...
Reference: RBD-1816
Anti-Interference Ability Baud rate: 110 ~ 256000bps Operating Voltage: 3v to 30VDC Compatible With Both 3V and 5V logic
Reference: RBD-0397
Support CAN V2.0B technical standard, communication rate 1Mb / S. Module 5V DC power supply, SPI interface protocol control 0 to 8 bytes long data field. 8MHZ crystal oscillator 120Ω terminal resistance Use High-speed CAN transceiver TJA1050 Impedance matching, guaranteed drive capability, long-distance data transmission, prevent signal radiation The...
Reference: RBD-3286
The Serial MP3 Music Player Module V1.3.2 is a compact and easy-to-use audio playback module that supports MP3 and WAV file formats. Designed for seamless integration into microcontroller-based projects, this module enables high-quality audio playback with simple UART TTL serial control. This module is highly compatible with platforms like Arduino,...
Reference: RBD-3046
On-chip power-on reset circuit, on-chip voltage regulator: 3.45 V output Compliant with USB specification 2.0 standard; full speed (12Mbps) USB suspend status via SUSPEND and /SUSPEND pins Integrated 194-byte one-time programmable ROM for storing customizable product informationComes without soldering
Reference: RBD-2546
The ADuM1201 is a dual channel digital isolator using technology by Analog Devices called iCoupler. It provides electrical isolation similar to an optocoupler and optionally provides logic level conversion between 3.3V and 5V systems.
Reference: RBD-0383
Wide Supply Range: 2.0v To 5.5v Low Current Consumption Continuous Mode: Only 150µa Single-shot Auto Shut-down Programmable Data Rate: 8SPS to 860SPS It has Internal low-drift voltage reference
Reference: RBD-2396
High-Precision GPS Module: NEO-7M satellite positioning module with MicroUSB interface for easy connectivity. USB and TTL Interface: Features MicroUSB for direct connection and TTL pins for external MCU or USB-TTL module. Built-in Ceramic Antenna: Provides excellent satellite search capability; includes SMA interface for external active antennas. Wide...
Reference: RBD-2218
Module package (with FLASH memory and peripheral circuits) have DIP16, DIP28, chip packaging has DIP18, SSOP20, and LQFP32 form. Built 13Bit/DA converter, and 12Bit/PWM output. PWM output can directly drive 0.5W/8Ω speakers, push-pull current abundant support DAC / PWM output of two ways. Support for loading WAV audio formats. USB download mode, support...
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-2213
Operating voltage (v):DC 8 – 12V Chipset:TPA3118 - 28 pin Chinese Variant Power output:30W Material:FR4 This is a Chinese variant of the TPA3118 in a 28-pin package.
Reference: RBD-3048
This Industrial Grade USB to RS485 Converter is designed to provide seamless data transmission between USB and RS485 interfaces, making it a reliable and versatile solution for various industrial applications. Equipped with the CH340 chip, it ensures fast and stable communication with RS485-compatible devices. The internal components shown in the picture...
Reference: RBD-3206
The Metal Motor Servo Tester ESC Checker Master is a professional-grade tool designed to test and calibrate servos and electronic speed controllers (ESCs) for RC drones, cars, boats, and helicopters. With its durable aluminum alloy construction and versatile functionality, this tester allows you to adjust and synchronize multiple servos or ESCs with ease....
Reference: RBD-2416
USB to Serial Conversion: Reliable CH340G USB to UART interface for seamless communication. Dual Voltage Output: Provides 5V and 3.3V outputs for versatile usage. Compact Design: Miniature size for easy installation in tight spaces. Stable Performance: Built with the CH340G chip, known for reliability and stability. Wide Compatibility: Supports flashing...
Reference: RBD-0624
Operating Voltage: DC 2V- 9V Operating frequency: 85MHZ - 115MHZ Output Impedance: 50 ohms
Reference: RBD-0306
Baud rate (USB): 115200 Baud rate (bluetooth, UART): 9600 Storage Flash capacity: 16M Mode to choose: 4 types Simultaneous controlling servo number: 32 channel Max action groups: 256 groups Communication agreement: UART Cross platform operation, can support WindowsXP, WindowsVisit, Windows7, Windows8, Windows10, Linux,FreeBsd, MAC OS, Android
Reference: RBD-1865
HW-633 control board Automatic power-off when full charged Intelligent, Power Saving, Safe Suitable for 12-24V Storage Battery Battery application: Lead-acid batteries, Solar cells, new energy batteries, Car battery, electric car battery, Lithium-ion battery, polymer battery Made of ABS plastic and metal, durable and tough Automatic power-off when full...
Reference: RBD-0667
Input Supply Voltage (VDC): 3.3 ~ 5. Supply Current (mA): measurement 0.3mA standby 60μA. Temperature measurement range: 0~50 degrees. Temperature measurement error: ±2 degrees. Humidity measurement range: 20%~95%RH. Humidity measurement error: ±5%RH. RoboticsBD
Reference: RBD-1205
Distance Range (Radius): 0.15m to 6m, white objects (Diameter Range – 12m) Angular Range: 0 ~ 360º Distance Resolution: < 0.5mm Angular Resolution: <= 1 º Sample Duration: 0.5 ms Sample Frequency: >=8000 Hz Scan Rate: 1 ~ 10Hz, Typical 5.5Hz
Reference: RBD-1880
Voltage: 12V DC RPM:500RPM Diameter: 25mm Low Noise Shaft equips metal bushes for long life. Metal Gears for High performance It comes with High-Quality gears. High torque at very low Current Consumptions
Reference: 0245
Choose your desire Resistor value from below:
Reference: RBD-1541
For beginners who are interested in Arduino A complete set of Arduino’s most common and useful electronic components Infrared sensor receiving module Laser sensor module Temperature and humidity sensor module Infrared sensor module 5v relay module Obstacle avoidance sensor module.
Reference: 0031
3 Types Available (Please select from option) 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-0094
The Arduino Uno R3 High-Quality Edition Arduino UNO in Bangladesh Micro-controller : ATmega328. Operating Voltage : 5V. Input Voltage (recommended) : 7-12V. Digital I/O Pins : 14 (of which 6 provide PWM output). Analog Input Pins : 6. The Arduino Uno R3 High-Quality Edition embodies superior craftsmanship and meticulous attention to detail, resulting in...
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
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-0020
Model: SG90 Weight: 9 gm Operating voltage: 3.0V~ 7.2V Servo Plug: JR Stall torque @4.8V : 1.2kg-cm Stall torque @6.6V : 1.6kg-cm Note: Product images/ Components brand may vary from actual product as our stock rotates.
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-0022
This is the HC-SR04 ultrasonic distance sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit. There are only four pins that you need to worry about on the HC-SR04: VCC (Power),...
Reference: 0245
Choose your desire Resistor value from below:
This module uses a CSR chip of unknown origin, which may be a clone. However, it is still expected to perform reliably.
For a Bluetooth module with a verified genuine CSR chip (HC-05), click here.
