ARDUINO NANO 33 IoT

Overview

The Arduino Nano 33 IoT is a compact Arduino BLE WiFi board built for connected projects — one of the few Nano-sized boards that combines both wireless protocols on a single module. Instead of choosing between a WiFi-only or Bluetooth-only board, this one gives you both, plus a 6-axis motion sensor and a dedicated security chip, all in a form factor small enough to fit into space-limited builds.

At its core is a low-power SAMD21 processor — a 32-bit ARM Cortex-M0+ chip known for a good balance of performance and battery efficiency. Wireless connectivity comes from a u-blox NINA module handling both WiFi and Bluetooth Low Energy, while a separate ATECC608A security chip handles encrypted communication, useful for any project connecting to a cloud service or handling sensitive data. An onboard 6-axis IMU (accelerometer + gyroscope) rounds out the board, making it a practical choice for motion-based projects like pedometers, vibration alerts, or basic robotics orientation sensing — without needing a separate sensor module.

WiFi Connectivity and Cloud Integration

Setting up a WiFi connection on this board follows the standard Arduino WiFi library pattern — connect to an existing network, or configure the board to broadcast its own access point. Beyond local networking, the board can also connect to cloud platforms for remote monitoring and control, including Arduino's own cloud service as well as third-party platforms commonly used in IoT projects. This makes it a practical arduino wifi board choice for projects that need to send sensor data somewhere beyond the local network — home automation dashboards, remote monitoring systems, or simple data-logging projects that report back to a phone or web app.

Bluetooth and Bluetooth Low Energy

What sets this board apart from most microcontroller boards is that its wireless chipset can act as both a Bluetooth host and a Bluetooth client — meaning it can either connect out to other Bluetooth devices or accept incoming connections, using the same hardware. That flexibility matters for projects like a Bluetooth-connected wearable that talks to a phone app, or a central hub that pulls data in from several Bluetooth Low Energy sensors at once.

Need longer range instead of short-range WiFi/Bluetooth? The Arduino MKR WAN 1310 uses the same SAMD21 processor but adds LoRaWAN connectivity for long-distance IoT projects.

Technical Specifications

• Microcontroller: SAMD21 Cortex-M0+, 32-bit low-power ARM MCU
• Wireless Module: u-blox NINA-W102 (WiFi + Bluetooth Low Energy)
• Secure Element: ATECC608A
• Operating Voltage: 3.3V
• Input Voltage (limit): 21V
• Clock Speed: 48MHz
• Flash Memory: 256KB
• SRAM: 32KB
• Digital I/O Pins: 14
• Analog Input Pins: 8 (8/10/12-bit ADC)
• Analog Output: 1 (10-bit DAC)
• Communication: 1× UART, 1× SPI, 1× I2C
• IMU: LSM6DS3 (6-axis accelerometer + gyroscope)
• Dimensions: 45 × 18 mm
• Weight: 5g with headers
• Note: Board ships without a USB cable

Frequently Asked Questions

What makes this different from other Arduino Nano boards?

It's one of the few Nano-format boards with both WiFi and Bluetooth Low Energy built in on the same module, along with a dedicated security chip and motion sensor — features usually spread across multiple separate boards or add-on modules.

Do I need external hardware to use WiFi and Bluetooth together?

No — both are handled by the onboard u-blox NINA module, so no additional wireless shield or module is required.

What is the ATECC608A chip used for?

It's a secure element dedicated to handling encrypted communication, useful for projects connecting to cloud services where secure authentication matters.

Can this board be used for motion-sensing projects without an extra sensor?

Yes — the built-in 6-axis IMU (LSM6DS3) can handle basic motion sensing tasks like vibration detection or orientation tracking without any additional hardware.

Does the board come with a USB cable?

No, the board ships without a USB cable, so you'll need to supply your own to program it or provide power over USB.

Browse our full Arduino Boards & Shields collection for more compatible Arduino BLE WiFi board options and accessories.

Download

• Product Official Page