Nano 33 BLE Sense

The Arduino Nano 33 BLE Sense combines a tiny form factor, different environment sensors and the possibility to run AI using TinyML and TensorFlow™ Lite. Whether you are looking at creating your first embedded ML application or you want to use Bluetooth® Low Energy to connect your project to your phone, the Nano 33 BLE Sense will make that journey easy.

Main Features

The Arduino Nano 33 BLE Sense is a great choice for any beginner, maker or professional to get started with embedded machine learning. It is build upon the nRF52840 microcontroller and runs on Arm® Mbed™ OS. The Nano 33 BLE Sense not only features the possibility to connect via Bluetooth® Low Energy but also comes equipped with sensors to detect color, proximity, motion, temperature, humidity, audio and more.

u-blox NINA-B306

A powerful 2.4 GHz Bluetooth® 5 low energy module from u-blox, with an internal antenna.

Datasheet

IMU for Motion Detection

The LSM9DS1 inertial measurement unit features a 3D accelerometer, gyroscope and magnetometer and allows you to detect orientation, motion or vibrations in your project.

Datasheet

Python Support

This board can be programmed with the Python programming language via the OpenMV IDE.

Learn More

Omnidirectional Digital Microphone

The MP34DT05 microphone allows to capture and analyze sound in real time and can be used to create a voice interface for your project.

Datasheet

Proximity and Gesture Detection

The APDS-9960 chip allows for measuring digital proximity and ambient light as well as for detecting RGB colors and gestures.

Datasheet

Barometric Pressure Sensor

The LPS22HB picks up on barometric pressure and allows for a 24-bit pressure data output between 260 to 1260 hPa. This data can also be processed to calculate the height above sea level of the current location.

Datasheet

Temperature and Humidity Detection

The HTS221 capacitive digital sensor measures relative humidity and temperature. It has a temperature accuracy of ± 0.5 °C (between 15-40 °C) and is thereby perfectly suited to detect ambient temperature.

Datasheet

Lauterbach TRACE32 debugger

This board is compatible with Lauterbach TRACE32 debugger, and a free license can be obtained using the boards serial number.

Learn More

Tech Specs

Please read: operating voltage

The microcontroller on the Arduino Nano 33 BLE Sense runs at 3.3V, which means that you must never apply more than 3.3V to its Digital and Analog pins. Care must be taken when connecting sensors and actuators to assure that this limit of 3.3V is never exceeded. Connecting higher voltage signals, like the 5V commonly used with the other Arduino boards, will damage the Arduino Nano 33 BLE Sense.

To avoid such risk with existing projects, where you should be able to pull out a Nano and replace it with the new Nano 33 BLE Sense, we have the 5V pin on the header, positioned between RST and A7 that is not connected as default factory setting. This means that if you have a design that takes 5V from that pin, it won't work immediately, as a precaution we put in place to draw your attention to the 3.3V compliance on digital and analog inputs.

5V on that pin is available only when two conditions are met: you make a solder bridge on the two pads marked as VUSB and you power the Nano 33 BLE Sense through the USB port. If you power the board from the VIN pin, you won't get any regulated 5V and therefore even if you do the solder bridge, nothing will come out of that 5V pin. The 3.3V, on the other hand, is always available and supports enough current to drive your sensors. Please make your designs so that sensors and actuators are driven with 3.3V and work with 3.3V digital IO levels. 5V is now an option for many modules and 3.3V is becoming the standard voltage for electronic ICs.

Board	Name	Arduino® Nano 33 BLE Sense
Board	SKU	ABX00031
Microcontroller	nRF52840
USB connector	Micro USB
Pins	Built-in LED Pin	13
	Digital I/O Pins	14
	Analog input pins	8
	PWM pins	5
	External interrupts	All digital pins
Connectivity	Bluetooth®	NINA-B306
Sensors	IMU	LSM9DS
	Microphone	MP34DT05
	Gesture, light, proximity	APDS9960
	Barometric pressure	LPS22HB
	Temperature, humidity	HTS221
Communication	UART	RX/TX
	I2C	A4 (SDA), A5 (SCL)
	SPI	D11 (COPI), D12 (CIPO), D13 (SCK). Use any GPIO for Chip Select (CS).
Power	I/O Voltage	3.3V
	Input voltage (nominal)	5-18V
	DC Current per I/O Pin	10 mA
Clock speed	Processor	nRF52840 64MHz
Memory	nRF52840	256 KB SRAM, 1MB flash
Dimensions	Weight	5gr
	Width	18 mm
	Length	45 mm

Compatibility

Essentials

Guides

Quickstart Guide

All you need to know to get started with your new Arduino board.

BLE Sense Cheat Sheet

Learn about the Nano 33 BLE Sense's onboard sensors, supported serial & wireless protocols, pins and much more.

Nano Hardware Design Guide

Learn how to create your own custom hardware that is compatible with the Arduino Nano Family.

Community Projects

Discover interesting projects from the community based on the Nano 33 BLE Sense board.

Suggested Libraries

ArduinoBLE

The ArduinoBLE library is designed for Arduino boards that have hardware enabled for Bluetooth® Low Energy and Bluetooth® 4.0 and above.

Arduino_LSM9DS1

The Arduino_LSM9DS1 library is designed to be used with the LSM9DS1 IMU module, which includes a 3-axis accelerometer, 3-axis gyroscope and a 3-axis magnetometer.

Arduino_HTS221

The Arduino_HTS221 library is designed for reading temperature and humidity values from the HTS221 sensor.

PDM

The PDM library allows you to use PDM (Pulse-density modulation) microphones, like the MP34DT05 onboard the Arduino Nano 33 BLE Sense.

Arduino_APDS9960

The Arduino_APDS9960 library allows you to use the APDS9960 sensor available on the Arduino Nano 33 BLE Sense to read gestures, color, light intensity and proximity.

Arduino Basics

Built-in Examples

Built-in Examples are sketches included in the Arduino IDE and demonstrate all basic Arduino commands.

Learn

Discover interesting articles, principles and techniques related to the Arduino ecosystem.

Language References

Arduino programming language can be divided in three main parts: functions, values (variables and constants), and structure.

Tutorials

Access Barometric Pressure Sensor Data on Nano 33 BLE Sense

Learn how to read data from the LPS22HB barometric pressure sensor on the Nano 33 BLE Sense board.

Barometric pressure

Sensor

Connecting Nano 33 BLE Devices over Bluetooth®

Learn about the history of Bluetooth®, how Bluetooth® Low Energy works and how to connect two Nano BLE devices over Bluetooth®.

Bluetooth®

Bluetooth® Low Energy

Nano 33 BLE Sense Python Guide

Discover how to access the features on the Nano 33 BLE Sense using Python scripts.

MicroPython

OpenMV

Controlling RGB LED Through Bluetooth®

Learn how to control the built in RGB LED on the Nano 33 BLE Sense board over Bluetooth®, using an app on your phone.

Bluetooth®

Bluetooth® Low Energy

Nano 33 BLE Sense Cheat Sheet

Learn how to set up the Nano 33 BLE Sense, get a quick overview of the components, information regarding pins and how to use different Serial (SPI, I2C, UART) and Wireless (Wi-Fi, Bluetooth®) protocols.

Installation

I2C

SPI

UART

Bluetooth®

IMU

Nano 33 BLE Sense Community Projects

Discover interesting projects from the community based on the Nano 33 BLE Sense board.

Picovoice

Magic Wand

Edge Impulse with the Nano 33 BLE Sense

Learn how to train your board to recognize keywords in speech, using Edge Impulse.

Machine Learning

Edge Impulse

Microphone

Gesture Recognition with the Nano 33 BLE Sense

Learn how to use the built in gesture sensor of the Nano 33 BLE Sense to control the built in RGB LED.

Gesture

RGB

Sensor

Get Started With Machine Learning on Arduino

Learn how to train and use machine learning models with the Arduino Nano 33 BLE Sense

Machine learning

Tensorflow Lite Micro

Getting Started with OpenMV

In this tutorial, you will learn how to update the bootloader of your Nano 33 BLE (sense) board so that it may be used with OpenMV IDE, allowing to program it with MicroPython.

OpenMV

MicroPython

Bootloader

Reading Temperature & Humidity on Nano 33 BLE Sense

Learn how to measure and print out the humidity and temperature values of your surroundings using the Nano 33 BLE Sense

Humidity

Temperature

Sensor

Connecting Two Nano 33 BLE Sense Boards Through I2C

Learn how to send data from one Nano 33 BLE Sense board to another board via I2C.

I2C

Communication

Accessing Accelerometer Data on Nano 33 BLE Sense

Learn how to measure the relative position of the Nano 33 BLE Sense through the LSM9DS1 IMU sensor.

IMU

Accelerometer

Accessing Gyroscope Data on Nano 33 BLE Sense

Learn how to measure the direction of force to emulate an object's crash using the Nano 33 BLE Sense.

IMU

Gyroscope

Accessing Magnetometer Data on Nano 33 BLE Sense

Learn how to detect disturbances in the magnetic field around an electronic device using the Nano 33 BLE Sense board.

IMU

Magnetometer

Controlling the On-Board RGB LED with Microphone

Learn how to create a soundmeter using the built-in microphone on the Nano 33 BLE Sense.

Microphone

Sound

Sensor

Proximity Detection with the Nano 33 BLE Sense

Learn how to control the built in RGB LED using the built in proximity sensor of the Nano 33 BLE Sense.

Proximity

Sensor

Detecting Colors with the Nano 33 BLE Sense Board

Learn how to visualize the dominant primary colour of an object using the built in RGB sensor on the Nano 33 BLE Sense

RGB

Color detection

Sensor

Lauterbach TRACE32 GDB Front-End Debugger for Nano 33 BLE

This tutorial will show you how to use the Lauterbach TRACE32 GDB front-end debugger to debug your Nano 33 BLE application via GDB on a serial interface.

Debugging

Lauterbach

TRACE32

Connecting Two Nano 33 BLE Sense Boards Through UART

Learn how to send data from a Nano 33 BLE Sense board to another board via UART.

UART

Communication