Raspberry Pi 3
Raspberry Pi 3 — 64-Bit Linux SBC with Wi-Fi, Bluetooth & 40-Pin GPIO A quad-core 1.4GHz ARM Cortex-A53, built-in Wi-Fi and Bluetooth, and a full 40-pin GPIO header — all...
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- Rs. 2,900.00
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- Rs. 2,900.00
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Raspberry Pi 3 — 64-Bit Linux SBC with Wi-Fi, Bluetooth & 40-Pin GPIO
A quad-core 1.4GHz ARM Cortex-A53, built-in Wi-Fi and Bluetooth, and a full 40-pin GPIO header — all on a board smaller than a credit card. Pick Model A+ for tight spaces and low power, or Model B/B+ when you need Ethernet and four USB ports.
Key Highlights
- 64-Bit Quad-Core Processing — The ARMv8 Cortex-A53 architecture handles multithreaded Python, Node.js, and OpenCV workloads that would stall simpler microcontrollers.
- Wireless Out of the Box — Every board ships with Wi-Fi and Bluetooth, eliminating the external adapters that clutter older SBC setups and create RF interference problems.
- 40-Pin GPIO — Full HAT Compatibility — The header pinout is identical across all Pi 3 models, meaning every HAT, breakout board, and shield in the ecosystem works regardless of which variant you choose.
- Mature, Stable Software Stack — Years of Raspberry Pi OS releases mean driver support is deep, community answers are abundant, and the firmware is hardened for long-running deployments.
- Official Camera & Display Ecosystem — The dedicated CSI and DSI ports let you attach the official Pi Camera Module or the 7-inch touchscreen display without occupying any USB bandwidth.
- MicroSD Flexibility — Boot from any Class 10 / UHS-I microSD card loaded with Raspberry Pi OS, Ubuntu, Kali Linux, or hundreds of other community-maintained distributions.
- Power-Efficient for Always-On Use — Model A+ idles at around 200mA, making it practical for battery-backed sensor nodes, solar-powered field loggers, and wall-outlet IoT gateways that never switch off.
- One Platform, Thousands of Tutorials — The Pi 3 remains one of the most documented SBCs in history. Getting from unboxing to a running project is measured in minutes, not days.
Technical Specifications
| Specification | Model A+ | Model B | Model B+ |
| SoC | BCM2837B0 | BCM2837 | BCM2837B0 |
| CPU | Quad-Core ARM Cortex-A53 (ARMv8 64-bit) | ||
| CPU Clock Speed | 1.4GHz | 1.2GHz | 1.4GHz |
| RAM | 512MB LPDDR2 | 1GB LPDDR2 | 1GB LPDDR2 |
| Wi-Fi | 802.11 b/g/n (2.4GHz) | 802.11 b/g/n (2.4GHz) | 802.11 b/g/n/ac (2.4GHz + 5GHz) |
| Bluetooth | BT 4.2 / BLE | BT 4.1 / BLE | BT 4.2 / BLE |
| Ethernet | — | 100Mbps | 300Mbps (Gigabit via USB 2.0) |
| USB Ports | 1× USB 2.0 | 4× USB 2.0 | 4× USB 2.0 |
| GPIO | 40-Pin Header (I²C, SPI, UART, PWM, 3.3V & 5V) | ||
| Video Output | Full-Size HDMI (1080p30 / 1080p60) | ||
| Camera Interface | CSI-2 (15-pin ribbon, supports Pi Camera v1 & v2) | ||
| Display Interface | DSI (15-pin ribbon, supports official 7" touchscreen) | ||
| Audio | 3.5mm TRRS (audio + composite video) + HDMI audio | ||
| Storage | MicroSD slot (Class 10 / UHS-I recommended) | ||
| Power Input | 5V / 2.5A via Micro USB | ||
| PoE Support | — | — | Yes (with PoE HAT) |
| Board Dimensions | 65 × 56mm | 85 × 56mm | 85 × 56mm |
| OS Support | Raspberry Pi OS (32/64-bit), Ubuntu, Kali Linux, LibreELEC, and more | ||
Which Model Is Right for You?
The three Pi 3 variants share the same GPIO pinout and software stack, so your code and HATs move between them without modification. The decision comes down to physical constraints and connectivity needs.
| Compare | Model A+ | Model B / B+ |
| RAM | 512MB | 1GB |
| USB Ports | 1 | 4 |
| Wired Ethernet | No | Yes |
| Dual-Band Wi-Fi | No (2.4GHz only) | B+: Yes (2.4 + 5GHz) |
| Board Size | Compact — 65×56mm | Standard — 85×56mm |
| Idle Power Draw | ~200mA (lower) | ~260–300mA (higher) |
| Best Suited For | Embedded, battery-powered, and space-limited builds | Desktop use, networking projects, and multi-peripheral setups |
Common Applications & Use Cases
- IoT Sensor Gateway — Aggregate data from BLE sensors, Zigbee modules, or serial peripherals and push readings to MQTT brokers, InfluxDB, or cloud APIs over Wi-Fi or Ethernet.
- Home Automation Hub — Run Home Assistant, openHAB, or custom Python scripts to toggle relays, read temperature sensors, and control smart home devices via the GPIO header and I²C bus.
- Network Tools (Pi-hole, VPN, NAS) — The B/B+ models with Ethernet are popular choices for Pi-hole ad blocking, WireGuard VPN servers, and lightweight Samba file shares on the home network.
- Robotics & Motor Control — Pair with a motor driver HAT to command DC motors, servos, and stepper motors while simultaneously reading encoders and IMUs over I²C or SPI — all from a single Python or C++ program.
- Machine Vision & Camera Projects — Connect the official Pi Camera Module v2 via CSI for 8MP still images or 1080p30 video. Run OpenCV or TensorFlow Lite for real-time image classification, barcode reading, or motion detection.
- Educational Linux Desktop — Boot Raspberry Pi OS Desktop and get a fully functional programming environment with Thonny (Python), Scratch, and the Chromium browser on any HDMI monitor.
- Retro Gaming Console — Install RetroPie to emulate NES, SNES, Sega Genesis, PlayStation, and dozens of other classic platforms with near-perfect performance at Pi 3 clock speeds.
- Kiosk & Digital Signage — The compact form factor and HDMI output make the Pi 3 a go-to for always-on digital signs, info panels, and touch kiosks in commercial and educational settings.
- Battery-Powered Field Logger (A+ Model) — At roughly 200mA idle, Model A+ can log sensor data from a 10,000mAh power bank for 30+ hours without a charger — useful for environmental monitoring, weather stations, and field research.
- CI/CD Build Nodes & Lightweight Servers — Run a Jenkins agent, Docker containers, or a lightweight web server (Flask, FastAPI, Nginx) for local development environments and internal tooling.
What's in the Box
- 1× Raspberry Pi 3 Series Board (variant as selected at checkout)
Note: MicroSD card, power supply, and case are sold separately. You will need a 5V / 2.5A Micro USB power supply and a Class 10 or UHS-I microSD card (8GB minimum, 16GB+ recommended) to get started. A supply rated below 2.5A may cause undervoltage warnings under load.
Frequently Asked Questions
What operating systems can I run on the Raspberry Pi 3?
The Pi 3 officially supports Raspberry Pi OS (32-bit and 64-bit), but the community has ported dozens of distributions to it — including Ubuntu, Kali Linux, Manjaro ARM, LibreELEC, RetroPie, and DietPi. Any ARMv7 or ARMv8 Linux image built for the BCM2837 family will run on Model A+, B, and B+.
How much power does the Raspberry Pi 3 need, and can I power it from a USB phone charger?
The official recommendation is a 5V / 2.5A Micro USB supply. Many phone chargers are rated at 5V / 1A or 5V / 2A, which is often enough at idle but will trigger the low-voltage lightning bolt warning when USB devices or the CPU are under load. Use a dedicated Pi power supply or a high-quality charger rated at 2.5A or above to avoid throttling and unexpected reboots.
What is the difference between the Raspberry Pi 3 Model B and Model B+?
Model B+ is an improved revision of Model B. It upgrades the CPU clock from 1.2GHz to 1.4GHz, adds dual-band 802.11ac Wi-Fi (2.4GHz + 5GHz), improves the Ethernet controller for roughly 3× throughput compared to Model B's 100Mbps, adds a PoE header, and improves the power circuit for cleaner 3.3V GPIO output. If you're buying new today, Model B+ is the better choice for nearly every use case.
Does the Raspberry Pi 3 support 64-bit operating systems?
Yes. The BCM2837 / BCM2837B0 SoC features a 64-bit ARMv8 Cortex-A53 core. The 64-bit version of Raspberry Pi OS is officially supported and stable on Pi 3. Running 64-bit gives you access to 64-bit builds of software packages, slightly improved performance for certain workloads, and full compatibility with 64-bit ARM containers.
Can I use any microSD card with the Raspberry Pi 3?
The Pi 3 reads standard microSD cards. However, card quality has a significant impact on performance — especially boot time and random read/write speeds for the OS. Use a Class 10 or UHS-I (U1/U3) card from a reputable brand. A 16GB card is a comfortable minimum for Raspberry Pi OS with desktop; 32GB+ is recommended if you plan to install many packages or store data locally.
Will HATs designed for Raspberry Pi 4 work on the Pi 3?
Most HATs are electrically compatible because the 40-pin GPIO header pinout is identical across Pi 3 and Pi 4. However, some HATs rely on Pi 4-specific features like USB 3.0, the dual-lane MIPI CSI-2 camera connector, or PCIe. Always check the HAT's datasheet for Pi 3 compatibility before purchasing. HATs that use only I²C, SPI, UART, and standard GPIO pins almost always work on Pi 3 without any changes.
Does the Raspberry Pi 3 have built-in storage?
No — the Pi 3 has no onboard eMMC or built-in flash storage. All storage is provided by the microSD card slot. You can also boot from a USB drive or an external SSD connected via USB after flashing a compatible bootloader, though microSD remains the primary and most straightforward option.
Is the Raspberry Pi 3 still worth buying when the Pi 4 and Pi 5 are available?
Absolutely — depending on the use case. The Pi 3 is an excellent fit for projects where the Pi 4/5 is overkill: battery-powered nodes, compact embedded builds, classroom kits, retro gaming consoles, always-on IoT gateways, and any deployment where long-term software stability and a known power budget matter more than raw performance. The Pi 3 platform is mature, thoroughly documented, and proven in production environments worldwide.
Can I run Python and Node.js on the Raspberry Pi 3?
Yes — both are supported out of the box. Raspberry Pi OS ships with Python 3 pre-installed, and Node.js can be installed via the official NodeSource repository or nvm. The Pi 3's 1GB of RAM (on B/B+) is sufficient for most Python Flask, FastAPI, or Node.js Express applications running locally or in lightweight production setups.
What's the GPIO voltage on the Raspberry Pi 3, and is it 5V tolerant?
All GPIO pins on the Raspberry Pi 3 operate at 3.3V logic levels. They are not 5V tolerant — applying 5V directly to a GPIO input pin will damage the SoC. When interfacing with 5V sensors, motor controllers, or Arduino-based peripherals, use a logic level shifter or a voltage divider to bring the signal down to 3.3V before connecting to the Pi's header.
