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Arduino Nano 33 BLE Sense Rev2
Product Overview
The Arduino Nano 33 BLE from Pro Tronix is a complete redesign of the classic Nano for the modern era. While it maintains the same small form factor, it is significantly more powerful, swapping the old 8-bit AVR chip for the 32-bit Nordic nRF52840 ARM Cortex-M4F running at 64 MHz.
This board is the go-to choice for Bluetooth Low Energy (BLE) projects, offering a multi-protocol radio that supports Bluetooth 5.0, Zigbee, and Thread. It also comes equipped with a high-precision 9-axis IMU (accelerometer, gyroscope, and magnetometer), making it ideal for motion tracking and wearable technology. With 1MB of Flash and 256KB of RAM, it is one of the few compact boards capable of running complex Machine Learning models using TinyML.
Technical Specifications
| Feature | Specification |
| Microcontroller | nRF52840 (32-bit ARM Cortex-M4F) |
| Clock Speed | 64 MHz |
| Connectivity | Bluetooth 5.0 (NINA-B306 module) |
| Operating Voltage | 3.3V (Pins are NOT 5V tolerant) |
| Flash Memory | 1 MB |
| SRAM | 256 KB |
| Inertial Sensor | 9-axis IMU (LSM9DS1) |
| Digital I/O Pins | 14 (all provide PWM) |
| Analog Input Pins | 8 (12-bit ADC) |
| Input Voltage (VIN) | 5V – 21V |
| Supplier | Pro Tronix |
Key Features
Powerful 32-bit Core: The Cortex-M4F includes a Floating Point Unit (FPU), making it much faster at processing complex mathematical calculations than standard Arduinos.
Full 9-Axis Motion Sensing: Includes an accelerometer, gyroscope, and a magnetometer. This allows for full orientation tracking (digital compass) without extra hardware.
Native Bluetooth 5: Supports advanced BLE features like “Long Range” and higher data speeds, perfect for connecting to smartphones or creating mesh networks.
TinyML Ready: Large memory capacity allows you to deploy AI models (like gesture recognition or sound classification) directly onto the device.
Mbed OS Compatible: Runs on the Arm® Mbed™ OS, supporting real-time multi-tasking and professional-grade software development.
Arduino Nano 33 BLE vs. BLE Sense
| Feature | Nano 33 BLE | Nano 33 BLE Sense |
| Microcontroller | Same (nRF52840) | Same (nRF52840) |
| IMU | Included (9-Axis) | Included (9-Axis) |
| Microphone | No | Yes (Digital MEMS) |
| Environmental | No | Yes (Temp, Humidity, Pressure) |
| Light & Gesture | No | Yes (APDS-9960) |
| Best For | Robotics & Basic BLE | Advanced AI & “Sensing” |
Common Applications
Wearable Exercise Trackers: Using the IMU to count steps or analyze athletic form.
Digital Compasses: Utilizing the magnetometer for precise directional navigation.
AI-Powered Robotics: Running simple object avoidance or gesture control models.
IoT Gateways: Acting as a central hub for low-power Bluetooth sensors.
You can see our available Nano series and Bluetooth solutions from here: Development Boards | Pro Tronix
