GPIO Expansion Board for Raspberry Pi 4B/3B+/3B

Expand your Raspberry Pi's capabilities with this versatile GPIO Expansion Board from The Engineer Store, Bengaluru. This essential accessory breaks out all 40 GPIO pins into an organized, breadboard-friendly layout, making prototyping faster, cleaner, and more intuitive. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support included.

Specifications

Parameter	Detail
Type	GPIO Breakout / Expansion Board
Compatibility	Raspberry Pi 4B, 3B+, 3B, 2B, Zero/Zero W
Pin Header	40-Pin (2x20) GPIO Connector
Board Layout	Clearly labeled pin names (GPIO, I2C, SPI, UART, PWM, 5V, 3.3V, GND)
Ribbon Cable	40-Pin Rainbow Flat Cable included
Mounting	Breadboard-compatible T-shaped / straight design
Build Quality	FR4 PCB with gold-plated contacts
Dimensions	Approx. 65mm x 56mm (board)
Operating Voltage	3.3V / 5V (pass-through from Pi)
Origin	Original / Authentic
Warranty	7-day warranty on manufacturing defects
Support	Email & WhatsApp 24/7

Key Features

• Full 40-Pin Breakout - Every GPIO pin from your Raspberry Pi is accessible, including power rails, ground, I2C (SDA/SCL), SPI (MOSI/MISO/SCLK/CE), UART (TX/RX), and PWM pins.
• Clear Silk-Screen Labels - Each pin is clearly printed with its BCM GPIO number and function, eliminating guesswork and reducing wiring errors.
• Breadboard Compatible - Plugs directly into a standard solderless breadboard, enabling rapid prototyping without soldering.
• Premium Ribbon Cable Included - 40-pin color-coded rainbow cable ensures secure, organized connection between the Pi and the expansion board.
• Gold-Plated Contacts - Ensures reliable electrical connections and long-term durability against corrosion.
• Universal Raspberry Pi Compatibility - Works seamlessly with all 40-pin Raspberry Pi models including the latest Pi 4B, 3B+, 3B, Pi 2, and Pi Zero series.
• Pass-Through Power - Provides easy access to both 5V and 3.3V power rails directly from the Pi, powering sensors and modules without external supplies.

Why Choose This GPIO Expansion Board?

• 100% authentic from trusted, authorized suppliers - quality verified
• Eliminates messy wiring - organized breakout replaces tangled jumper connections directly on the Pi header
• Protects your Raspberry Pi - reduces wear on the Pi's onboard GPIO header from repeated plugging/unplugging
• Accelerates development - spend less time tracing pins and more time building
• 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most of India
• Expert technical support included with every purchase

Project Ideas

• Sensor Interfacing: Connect temperature (DHT11/DHT22), humidity, motion (PIR), ultrasonic (HC-SR04), and light sensors effortlessly for IoT and environmental monitoring projects.
• LED & Relay Control: Build home automation systems by controlling LEDs, relay modules, motors, and solenoids through clearly labeled GPIO pins.
• Display Projects: Interface OLED screens (I2C), LCD displays (SPI), or LED matrices for dashboards, clocks, and notification systems.
• Robotics & Motor Control: Drive servo motors, stepper motors, and DC motors using PWM pins for robotic arms, rovers, and automated platforms.
• Communication Protocols: Experiment with I2C, SPI, and UART devices - connect multiple sensors, ADCs (MCP3008), RTCs (DS3231), and serial modules simultaneously.
• Learning & Education: Ideal for students learning embedded systems, Python GPIO programming, and electronics fundamentals with a clean, error-free setup.
• Professional Prototyping: Rapidly prototype industrial control systems, data loggers, and proof-of-concept designs before committing to custom PCBs.

How to Use

1. Connect the Ribbon Cable - Attach one end of the 40-pin rainbow cable to your Raspberry Pi's GPIO header. Ensure pin 1 alignment (match the marked corner/triangle).
2. Mount on Breadboard - Insert the expansion board into your solderless breadboard. The T-shaped design straddles the center channel perfectly.
3. Wire Your Circuit - Use standard jumper wires to connect components to the clearly labeled breakout pins.
4. Power Up & Code - Boot your Raspberry Pi and control the GPIO pins using Python (RPi.GPIO or gpiozero), C, or any supported language.

What's in the Box

• 1 x GPIO Expansion Board (assembled, ready to use)
• 1 x 40-Pin Rainbow Ribbon Cable
• Documentation and pin reference guide
• Support access card (Email & WhatsApp)

Frequently Asked Questions

Is this compatible with Raspberry Pi 4B?

Yes, this expansion board is fully compatible with Raspberry Pi 4B, 3B+, 3B, 2B, and all Pi Zero models that feature the standard 40-pin GPIO header.

Is this 100% authentic?

Yes, sourced directly from authorized distributors. Every unit is quality-checked and authentication verified before shipping.

Do I need to solder anything?

No. The board comes fully assembled with pre-soldered headers

Buy GPIO Expansion Board Raspberry PI 4B3 Online in India

Purchase the GPIO Expansion Board Raspberry PI 4B3 online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on GPIO Expansion Board Raspberry PI 4B3 with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy GPIO Expansion Board Raspberry PI 4B3 at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.