ARDUINO Nano 33 BLE Sense Development Board User Guide

: June 9, 2024
: ARDUINO

Table of Contents

Description
Features
The Board
- Ratings
Functional Overview
- LPS22HB (U9) Barometer and Temperature Sensor
- HS3003 (U8) Relative Humidity and Temperature Sensor
Board Operation
- Getting Started – IDE
Connector Pinouts
Mechanical Information
Certifications
FCC Caution
Company Information
Reference Documentation
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

ARDUINO Nano 33 BLE Sense Development Board User Guide

Description

The Arduino Nano 33 BLE Sense Rev2 is a miniature sized module containing a NINA B306 module, based on Nordic nRF52480 and containing a Cortex M4F. The BMI270 and BMM150 jointly provide a 9 axis IMU. The module can either be mounted as a DIP component (when mounting pin headers), or as a SMT component, directly soldering it via the castellated pads.

Target Areas

Maker, enhancements, IoT application

Features

NINA B306 Module

Processor
- 64 MHz Arm® Cortex®-M4F (with FPU)
- 1 MB Flash + 256 KB RAM
Bluetooth® 5 multiprotocol radio
- 2 Mbps
- CSA #2
- Advertising Extensions
- Long Range
- +8 dBm TX power
- -95 dBm sensitivity
- 4.8 mA in TX (0 dBm)
- 4.6 mA in RX (1 Mbps)
- Integrated balun with 50 Ω single-ended output
- IEEE 802.15.4 radio support
- Thread
- Zigbee
Peripherals
- Full-speed 12 Mbps USB
- NFC-A tag
- Arm CryptoCell CC310 security subsystem
- QSPI/SPI/TWI/I²S/PDM/QDEC
- High speed 32 MHz SPI
- Quad SPI interface 32 MHz
- EasyDMA for all digital interfaces
- 12-bit 200 ksps ADC
- 128 bit AES/ECB/CCM/AAR co-processor
BMI270 6-axis IMU (Accelerometer and Gyroscope)
- 16-bit
- 3-axis accelerometer with ±2g/±4g/±8g/±16g range
- 3-axis gyroscope with ±125dps/±250dps/±500dps/±1000dps/ ±2000dps range
BMM150 3-axis IMU (Magnetometer)
- 3-axis digital geomagnetic sensor
- 0.3μT resolution
- ±1300μT (x,y-axis), ±2500μT (z-axis)
LPS22HB (Barometer and temperature sensor)
- 260 to 1260 hPa absolute pressure range with 24 bit precision
- High overpressure capability: 20x full-scale
- Embedded temperature compensation
- 16-bit temperature data output
- 1 Hz to 75 Hz output data rateInterrupt functions: Data Ready, FIFO flags, pressure thresholds
HS3003 Temperature & humidity sensor
- 0-100% relative humidity range
- Humidity accuracy: ±1.5%RH, typical (HS3001, 10 to 90%RH,25°C)
- Temperature sensor accuracy: ±0.1°C, typical
- Up to 14-bit humidity and temperature output data
APDS-9960 (Digital proximity, Ambient light, RGB and Gesture Sensor)
- Ambient Light and RGB Color Sensing with UV and IR blocking filters
- Very high sensitivity – Ideally suited for operation behind dark glass
- Proximity Sensing with Ambient light rejection
- Complex Gesture Sensing
MP34DT06JTR (Digital Microphone)
- AOP = 122.5 dbSPL
- 64 dB signal-to-noise ratio
- Omnidirectional sensitivity
- –26 dBFS ± 3 dB sensitivity
MP2322 DC-DC
- Regulates input voltage from up to 21V with a minimum of 65% efficiency @minimum load
- More than 85% efficiency @12V

The Board

As all Nano form factor boards, Nano 33 BLE Sense Rev2 does not have a battery charger but can be powered through USB or headers.

NOTE: Arduino Nano 33 BLE Sense Rev2 only supports 3.3V I/Os and is NOT 5V tolerant so please make sure you are not directly connecting 5V signals to this board or it will be damaged. Also, as opposed to Arduino Nano boards that support 5V operation, the 5V pin does NOT supply voltage but is rather connected, through a jumper, to the USB power input.

Ratings

Recommended Operating Conditions

Symbol	Description	Min	Max
Conservative thermal limits for the whole board:	-40 °C ( 40 °F)	85°C (

185 °F)

Power Consumption

Symbol	Description	Typ	Unit
PBL	Power consumption with busy loop	TBC	mW
PLP	Power consumption in low power mode	TBC	mW
PMAX	Maximum Power Consumption	TBC	mW

Functional Overview

Board Topology

Top:
Functional Overview
Board topology top

Ref.	Description	Ref.	Description
U1	NINA-B306 Module Bluetooth® Low Energy 5.0 Module	U6	MP2322GQH Step Down

Bottom:

Ref.	Description	Ref.	Description
SJ1	VUSB Jumper	SJ2	D7 Jumper
SJ3	3v3 Jumper	SJ4	D8 Jumper

Processor

The Main Processor is an Arm® Cortex®-M4F running at up to 64MHz. Most of its pins are connected to the external headers, however some are reserved for internal communication with the wireless module and the onboard internal I2C peripherals (IMU and Crypto).

NOTE: As opposed to other Arduino Nano boards, pins A4 and A5 have an internal pull up and default to be used as an I2C Bus so usage as analog inputs is not recommended.

IMU

The Arduino Nano 33 BLE Sense Rev2 provides IMU capabilities with 9-axis, by combination of the BMI270 and BMM150 ICs. The BMI270 includes both a three axis gryroscope as well as an three axis accelerometer, while the BMM150 is capable of sensing magnetic field variations in all three dimensions. The information obtained can be used for measuring raw movement parameters as well as for machine learning.

LPS22HB (U9) Barometer and Temperature Sensor

The LPS22HB pressure sensor IC (U9) includes both a piezoresistive absolute pressure sensor together with a temperature sensor integrated into a small chip. The pressure sensor (U9) interfaces with the main microcontroller (U1) via an I2C interface. The sensing element is composed of a micromachined suspended membrane for measuring absolute pressure, and includes a Wheatstone bridge internally for measuring the the piezoresistive elements. The temperature perturbations are compensated via an included temperature sensor on-chip. The absolute pressure can range from 260 to 1260 hPa. Pressure data can be polled via I2C at up to 24-bits, while temperature data can be polled at up to 16-bits. The Arduino_LPS22HB library provides a ready to use implementation of the I2C protocol with this chip

HS3003 (U8) Relative Humidity and Temperature Sensor

The HS3003 (U8) is a MEMS sensors, designed to provide accurate readings of relative humidity and temperature in a small package. Temperature-compensation and calibration is performed on-chip, without requiring external circuitry. The HS3003 can measure the relative humidity from 0% to 100%RH with fast response times (under 4seconds). The included on-chip temperature sensor (used for compensation) is has a temperature accuracy of ±0.1°C. U8 communicates via the main microcontroller via an I2C bus.

Gesture Detection

Gesture detection utilizes four directional photodiodes to sense reflected IR energy (sourced by the integrated LED) to convert physical motion information (i.e. velocity, direction and distance) to a digital information. The architecture of the gesture engine features automatic activation (based on Proximity engine results), ambient light subtraction, cross-talk cancellation, dual 8-bit data converters, power saving inter-conversion delay, 32-dataset FIFO, and interrupt driven I2C communication. The gesture engine accommodates a wide range of mobile device gesturing requirements: simple UP-DOWN-RIGHT- LEFT gestures or more complex gestures can be accuratelysensed. Power consumption and noise are minimized with adjustable IR LED timing

Proximity Detection

The Proximity detection feature provides distance measurement (E.g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated LED). Detect/release events are interrupt driven, and occur whenever proximity result crosses upper and/ or lower threshold settings. The proximity engine features offset adjustment registers to compensate for system offset caused by unwanted IR energy reflections appearing at the sensor. The IR LED intensity is factory trimmed to eliminate the need for end-equipment calibration due to component variations. Proximity results are further improved by automatic ambient light subtraction.

Color and ALS Detection

The Color and ALS detection feature provides red, green, blue and clear light intensity data. Each of the R, G, B, C channels have a UV and IR blocking filter and a dedicated data converter producing16-bit data simultaneously. This architecture allows applications to accurately measure ambient light and sense color which enables devices to calculate color temperature and control display backlight.

Digital Microphone

The MP34DT06JTR is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface.

The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated to produce audio sensors.

Power Tree

The board can be powered via USB connector, VIN or VUSB pins on headers.
Power Tree Instructions
Power tree

NOTE: Since VUSB feeds VIN via a Schottky diode and a DC-DC regulator specified minimum input voltage is 4.5V the minimum supply voltage from USB has to be increased to a voltage in the range between 4.8V to 4.96V depending on the current being drawn.

Board Operation

Getting Started – IDE

If you want to program your Arduino Nano 33 BLE Sense Rev2 while offline you need to install the Arduino Desktop IDE [1] To connect the Arduino Nano 33 BLE Sense Rev2 to your computer, you’ll need a Micro-B USB cable. This also provides power to the board, as indicated by the LED.

Getting Started – Arduino Web Editor

All Arduino boards, including this one, work out-of-the-box on the Arduino Web Editor, by just installing a simple plugin.

The Arduino Web Editor is hosted online, therefore it will always be up-to- date with the latest features and support for all boards. Follow to start coding on the browser and upload your sketches onto your board.

Getting Started – Arduino IoT Cloud

All Arduino IoT enabled products are supported on Arduino IoT Cloud which allows you to Log, graph and analyze sensor data, trigger events, and automate your home or business.

Sample Sketches

Sample sketches for the Arduino Nano 33 BLE Sense Rev2 can be found either in the “Examples” menu in the Arduino IDE or in the “Documentation” section of the Arduino Pro website.

Online Resources

Now that you have gone through the basics of what you can do with the board you can explore the endless possibilities it provides by checking exciting projects on ProjectHub, the Arduino Library Reference and the on line store where you will be able to complement your board with sensors, actuators and more.

Board Recovery

All Arduino boards have a built-in bootloader which allows flashing the board via USB. In case a sketch locks up the processor and the board is not reachable anymore via USB it is possible to enter bootloader mode by doubletapping the reset button right after power up.

Connector Pinouts

Connector Pinouts
Pinout

USB

Pin	Function	Type	Description
1	VUSB	Power	Power Supply Input. If board is powered via VUSB from header

Headers

The board exposes two 15 pin connectors which can either be assembled with pin headers or soldered through castellated vias.

Pin	Function	Type	Description
1	D13	Digital	GPIO
2	+3V3	Power Out	Internally generated power output to external devices
3	AREF	Analog	Analog Reference; can be used as GPIO
4	A0/DAC0	Analog	ADC in/DAC out; can be used as GPIO
5	A1	Analog	ADC in; can be used as GPIO
6	A2	Analog	ADC in; can be used as GPIO
7	A3	Analog	ADC in; can be used as GPIO
8	A4/SDA	Analog	ADC in; I2C SDA; Can be used as GPIO (1)
9	A5/SCL	Analog	ADC in; I2C SCL; Can be used as GPIO (1)
10	A6	Analog	ADC in; can be used as GPIO
11	A7	Analog	ADC in; can be used as GPIO
12	VUSB	Power In/Out	Normally NC; can be connected to VUSB pin of the USB

Debug

On the bottom side of the board, under the communication module, debug signals are arranged as 3×2 test pads with 100 mil pitch with pin 4 removed. Pin 1 is depicted in Figure 3 – Connector Positions

Pin	Function	Type	Description
1	+3V3	Power Out	Internally generated power output to be used as voltage

Mechanical Information

Board Outline and Mounting Holes

The board measures are mixed between metric and imperial. Imperial measures are used to maintain 100 mil pitch grid between pin rows to allow them to fit a breadboard whereas board length is Metric.
Mounting Holes
Board layout

Certifications

Declaration of Conformity CE DoC (EU)

We declare under our sole responsibility that the products above are in conformity with the essential requirements of the following EU Directives and therefore qualify for free movement within markets comprising the European Union (EU) and European Economic Area (EEA).

Declaration of Conformity to EU RoHS & REACH 211 01/19/202

Arduino boards are in compliance with RoHS 2 Directive 2011/65/EU of the European Parliament and RoHS 3 Directive 2015/863/EU of the Council of 4 June 2015 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.

Substance	Maximum limit (ppm)
Lead (Pb)	1000
Cadmium (Cd)	100
Mercury (Hg)	1000
Hexavalent Chromium (Cr6+)	1000
Poly Brominated Biphenyls (PBB)	1000
Poly Brominated Diphenyl ethers (PBDE)	1000
Bis(2-Ethylhexyl} phthalate (DEHP)	1000
Benzyl butyl phthalate (BBP)	1000
Dibutyl phthalate (DBP)	1000
Diisobutyl phthalate (DIBP)	1000

Exemptions: No exemptions are claimed.

Arduino Boards are fully compliant with the related requirements of European Union Regulation (EC) 1907 /2006 concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH). We declare none of the SVHCs (https://echa.europa.eu/web/guest/candidate-list-table), the Candidate List of Substances of Very High Concern for authorization currently released by ECHA, is present in all products (and also package) in quantities totaling in a concentration equal or above 0.1%. To the best of our knowledge, we also declare that our products do not contain any of the substances listed on the “Authorization List” (Annex XIV of the REACH regulations) and Substances of Very High Concern (SVHC) in any significant amounts as specified by the Annex XVII of Candidate list published by ECHA (European Chemical Agency) 1907 /2006/EC.

Conflict Minerals Declaration

As a global supplier of electronic and electrical components, Arduino is aware of our obligations with regards to laws and regulations regarding Conflict Minerals, specifically the Dodd Frank Wall Street Reform and Consumer Protection Act, Section 1502. Arduino does not directly source or process conflict minerals such as Tin, Tantalum, Tungsten, or Gold. Conflict minerals are contained in our products in the form of solder, or as a component in metal alloys. As part of our reasonable due diligence Arduino has contacted component suppliers within our supply chain to verify their continued compliance with the regulations. Based on the information received thus far we declare that our products contain Conflict Minerals sourced from conflict free areas.

FCC Caution

Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

This device may not cause harmful interference
this device must accept any interference received, including interference that may cause undesired operation.

FCC RF Radiation Exposure Statement:

This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
This equipment complies with RF radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

User manuals for license-exempt radio apparatus shall contain the following or equivalent notice in a conspicuous location in the user manual or alternatively on the device or both. This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

This device may not cause interference
this device must accept any interference, including interference that may cause undesired operation of the device.

IC SAR Warning

This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body.

Important : The operating temperature of the EUT can’t exceed 85℃ and shouldn’t be lower than -40℃.

Hereby, Arduino S.r.l. declares that this product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU. This product is allowed to be used in all EU member states.