ARDUINO ABX00027 Nano 33 IoT Module

• Product Reference Manual SKU: ABX00027
• SKU(with headers): ABX00032

Description
Nano 33 IoT and Nano 33 IoT with headers is a miniature sized module containing a Cortex M0+ SAMD21 processor, a WiFi+BT module based on ESP32, a crypto chip which can securely store certificates and pre-shared keys and a 6 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, basic IoT application scenarios

Features

SAMD21G18A

Processor

• 256KB Flash
• 32KB Flash
• Power On Reset (POR) and Brown Out Detection (BOD)

Peripherals

• 12 channel DMA
• 12 channel event system
• 5x 16 bit Timer/Counter
• 3x 24 bit timer/counter with extended functions 32 bit RTC
• Watchdog Time
• CRC-32 generator
• Full speed Host/Device USB with 8 end points
• 6x SERCOM (USART, I2C, SPI, LIN)
• Two channel I2S
• 12 bit 350ksps ADC (up to 16 bit with oversampling) 10 bit 350ksps DAC
• External Interrupt Controller (up to 16 lines)

Nina W102

Module

• Dual Core Tensilica LX6 CPU at up to 240MHz
• 448 KB ROM, 520KB SRAM, 2MB Flash

WiFi

• IEEE 802.11b up to 11Mbit
• IEEE 802.11g up to 54MBit
• IEEE 802.11n up to 72MBit
• 2.4 GHz, 13 channels
• -96 dBm sensitivity

Bluetooth® BR/EDR

• Max 7 peripherals
• 2.4 GHz, 79 channels
• U\p to 3 Mbit/s
• 8 dBm output power at 2/3 Mbit/s 11 dBm EIRP at 2/3 Mbit/s
• 88 dBm sensitivity

Bluetooth® Low Energy

• Bluetooth® 4.2 dual mode
• 2.4GHz 40 channels
• 6 dBm output power
• 9 dBm EIRP
• 88 dBm sensitivity
• Up to 1 Mbit/

MPM3610 (DC-DC)

• Regulates input voltage from up to 21V with a minimum of 65% efficiency @minimum load
• More than 85% efficiency @12V

ATECC608A (Crypto Chip)

• Cryptographic co-processor with secure hardware based key storage Protected storage for up to 16 keys, certificates or data
• ECDH: FIPS SP800-56A Elliptic Curve Diffie-Hellman
• NIST standard P256 elliptic curve support
• SHA-256 & HMAC hash including off-chip context save/restore
• AES-128 encrypt/decrypt, galois field multiply for GCM

LSM6DSL (6 axis IMU)

• Always-on 3D accelerometer and 3D gyroscope
• Smart FIFO up to 4 KByte based
• ±2/±4/±8/±16 g full scale
• ±125/±250/±500/±1000/±2000 dps full scale

The Board

As all Nano form factor boards, Nano 33 IoT and Nano 33 IoT with headers does not have a battery charger but can be powered through USB or headers.
NOTE: Arduino Nano 33 IoT and Nano 33 IoT with headers 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.

Application Examples

Weather station: Using the Arduino Nano 33 IoT or Nano 33 IoT with headers together with a sensor and a OLED display, we can create a small weather station communicating temperature, humidity etc. directly to your phone.

Air quality monitor: Bad air quality may have serious effects on your health. By assembling the board, with a sensor and monitor you can make sure that the air quality is kept in indoor-environments. By connecting the hardware assembly to an IoT application/API, you will receive real time values.

Air drum: A quick and fun project is to create a small air drum. Connect your board and upload your sketch from the Create Web Editor and start creating beats with your audio workstation of your choice.

Ratings

Recommended Operating Conditions

Power Consumption

Functional Overview

Board Topology

Board topology top

Processor
The Main Processor is a Cortex M0+ running at up to 48MHz. Most of its pins are connected to the external headers, however some are reserved for internal communication with the wireless module and the on-board 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. Communication with NINA W102 happens through a serial port and a SPI bus through the following pins.

WiFi/BT Communication Module
Nina W102 is based on ESP32 and is delivered with a pre-certified software stack from Arduino. Source code for the firmware is available [9].

NOTE: Reprogramming the wireless module’s firmware with a custom one will invalidate compliance with radio standards as certified by Arduino, hence this is not recommended unless the application is used in private laboratories far from other electronic equipment and people. Usage of custom firmware on radio modules is the sole responsibility of the user. Some of the module’s pins are connected to the external headers and can be directly driven by ESP32 provided SAMD21’s corresponding pins are aptly tri-stated. Below is a list of such signals:

rypto
The crypto chip in Arduino IoT boards is what makes the difference with other less secure boards as it provides a secure way to store secrets (such as certificates) and accelerates secure protocols while never exposing secrets in plain text. Source code for the Arduino Library that supports the Crypto is available [10]

IMU
The board has an embedded 6 axis IMU which can be used to measure board orientation (by checking the gravity acceleration vector orientation) or to measure shocks, vibration, acceleration and rotation speed. Source code for the Arduino Library that supports the IMU is available [11]

Power Tree

lenend

Board Operation

Getting Started – IDE
If you want to program your board while offline you need to install the Arduino Desktop IDE [1] To connect the Arduino 33 IoT 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 [2], 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 [3] 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 33 IoT can be found either in the “Examples” menu in the Arduino IDE or in the “Documentation” section of the Arduino Pro website [4]

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 [5], the Arduino Library Reference [6] and the online store [7] 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 double-tapping the reset button right after power up.

Connector Pinouts

USB

1. The board can support USB host mode only if powered via the VUSB pin and if the jumper close to the VUSB pin is shorted.

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

Mechanical Information

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

Connector Positions
The view below is from top however it shows Debug connector pads which are on the bottom side. Highlighted pins are pin 1 for each connector’

Top view

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 01/19/2021
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.

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 complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

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

FCC RF Radiation Exposure Statement:

1. This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
2. This equipment complies with RF radiation exposure limits set forth for an uncontrolled environment.
3. 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:

1. this device may not cause interference
2. 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.

Company Information

Reference Documentation

Revision History

Documents / Resources

ARDUINO ABX00027 Nano 33 IoT Module [pdf] Instruction Manual ABX00032, 2AN9S-ABX00032, 2AN9SABX00032, ABX00027 Nano 33 IoT Module, ABX00027, Nano 33 IoT Module, Module

References

• User Manual