D2-6 Bluetooth Remote Control Intelligent Car 51 MCU DIY Kit

The D2-6 is a comprehensive robotics education kit featuring a 51-series microcontroller (MCU) paired with Bluetooth wireless control capabilities for building an autonomous intelligent car platform. Electronics engineers, embedded systems students, and robotics enthusiasts use this kit to develop real-time motor control algorithms, sensor integration, and wireless communication protocols. This DIY solution addresses the need for hands-on learning in IoT-enabled vehicle automation while providing a cost-effective platform for prototyping autonomous navigation systems.

Product Overview

The D2-6 Bluetooth Remote Control Intelligent Car operates on the principle of wireless command transmission through Bluetooth serial communication to a 51-series MCU that processes control signals and executes motor drive commands via H-bridge motor drivers. The microcontroller receives directional and speed data from a paired mobile device or Bluetooth remote, translates these inputs into PWM (Pulse Width Modulation) signals, and distributes power to DC motors through integrated motor control circuits. This architecture enables real-time bidirectional communication with latency typically under 50ms, making it suitable for responsive vehicle control applications.

What distinguishes the D2-6 kit is its modular design that separates the control logic layer from the power delivery layer, allowing learners to experiment with different motor configurations, sensor arrays, and communication protocols without redesigning the core MCU circuit. The kit includes pre-programmed bootloader firmware compatible with standard AT89C51 or STC89C52 microcontrollers, supporting both assembly language and C-based development environments. The onboard Bluetooth module (typically HC-05 or HC-06) operates at 2.4GHz ISM band with a range of 10-100 meters depending on line-of-sight conditions and environmental interference.

Key Specifications

Specification	Details
Product Type	Bluetooth Remote Control Car DIY Kit with 51 MCU
Microcontroller	AT89C51 or STC89C52 (8-bit, 8051 Architecture)
Operating Voltage	5V DC (regulated from 6-12V input)
Bluetooth Module	HC-05 or HC-06 (2.4GHz, 9600 baud rate)
Motor Drivers	Dual-channel H-bridge (L298N or equivalent)
Motor Specifications	2x 3-6V DC motors with gearbox (RPM adjustable via PWM)
Power Supply	4x AA battery holder (6V) or external 5V/12V adapter
Programming Interface	Serial UART (USB-TTL converter required)
Control Range	10-100 meters (Bluetooth line-of-sight)
Supported Platforms	Android, iOS, Windows, Linux
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• 51-Series Microcontroller with 4KB Flash Memory and 128 bytes RAM for efficient embedded programming and real-time control logic execution
• Integrated Bluetooth HC-05/HC-06 Module enabling wireless serial communication at 9600 baud with automatic pairing capability for mobile devices
• Dual H-Bridge Motor Driver Circuit supporting independent control of two DC motors with PWM-based speed regulation and directional reversal
• Pre-drilled PCB with component footprints optimized for through-hole soldering, reducing assembly time and improving reliability for beginners
• USB-TTL Programming Interface compatibility allowing direct firmware upload via standard serial communication without external programmers
• Onboard LED Status Indicators for power, Bluetooth connection, and motor operation providing real-time system diagnostics
• Modular Design Architecture permitting sensor integration (ultrasonic, IR, line-tracking) without core circuit modifications

Applications and Use Cases

• Educational Robotics Curriculum: Teaching embedded systems, microcontroller programming, and wireless communication principles in polytechnic and engineering colleges through hands-on vehicle assembly and control
• Autonomous Navigation Development: Prototyping obstacle avoidance algorithms and path-planning logic by integrating ultrasonic or infrared sensors with the existing motor control framework
• IoT Vehicle Automation: Building smart car platforms for warehouse automation, delivery robots, or surveillance applications with Bluetooth connectivity for remote monitoring and command execution
• Competitive Robotics: Serving as a foundation platform for line-following competitions, speed races, and obstacle courses by customizing firmware and sensor configurations
• Embedded Systems Research: Enabling experimental work on real-time operating systems, motor control algorithms, and wireless protocol optimization in automotive applications

How to Use

Begin by assembling the D2-6 PCB components following the provided schematic diagram, ensuring proper polarity for the power supply, motors, and Bluetooth module connections. Solder all components methodically, paying particular attention to the microcontroller socket orientation and motor driver pin alignment. Once assembly is complete, connect your 6V power source (either four AA batteries or an external adapter) and verify that the onboard LED illuminates, indicating successful power regulation to the 5V rail.

Next, install the microcontroller firmware using a USB-TTL serial converter connected to the programming interface pins. Download the provided hex file or compile your custom C code using Keil uVision or SDCC compiler, then use a programming tool like FlashMagic or Progisp to write the firmware to the AT89C51 flash memory. Pair your Bluetooth module with your mobile device or remote control application by holding the pairing button for 3-5 seconds until the LED blinks rapidly, then select the device from your phone's Bluetooth settings (default PIN is typically 1234 or 0000). Once connected, launch the control application and test forward, backward, left, and right motor commands to verify proper directional movement and speed response.

Frequently Asked Questions

What is the difference between HC-05 and HC-06 Bluetooth modules in this kit?

HC-05 is a master-slave module supporting both point-to-point and point-to-multipoint connections with configurable baud rates and AT command set for advanced customization. HC-06 is a slave-only module with fixed 9600 baud rate and simpler pairing procedure, making it ideal for beginners. Both operate identically for remote control applications, but HC-05 offers greater flexibility for complex wireless projects. The D2-6 kit typically ships with HC-05 unless specified otherwise.

Can I modify the firmware to add autonomous features like obstacle avoidance?

Yes, the D2-6 is fully programmable and supports integration of ultrasonic sensors (HC-SR04) or infrared proximity sensors through the spare GPIO pins on the 51 MCU. You can write custom C code or assembly routines to read sensor inputs, process distance calculations, and implement decision logic that overrides Bluetooth commands when obstacles are detected. The 4KB flash memory provides sufficient space for basic obstacle avoidance algorithms, though complex AI-based navigation may require external processing or a more powerful microcontroller.

What programming languages and development environments are compatible?

The D2-6 supports both assembly language (ASM) and C programming using industry-standard tools: Keil uVision (commercial, with free limited edition), SDCC (open-source cross-compiler), and IAR Embedded Workbench. Most educational institutions provide Keil licenses for student use. All environments compile to Intel HEX format compatible with the 51 MCU bootloader. We recommend C for faster development cycles and assembly for performance-critical motor control routines requiring cycle-accurate timing.

What is the maximum current draw and battery life expectancy?

The D2-6 draws approximately 200-300mA at idle (Bluetooth active, motors stopped) and 800-1200mA under full motor load (both motors at maximum speed). Four AA alkaline batteries (2400mAh nominal) provide approximately 2-3 hours of continuous operation with mixed idle and motor activity. Rechargeable NiMH batteries (2000mAh) offer similar runtime but better cycle life. For extended operation, use a 5V/2A external power adapter connected to the power input jack.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy D2-6 Bluetooth Remote Control Intelligent Car 51 MCU DIY Kit Online in India

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