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Arduino Nano 33 IoT

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The Arduino Nano 33 IoT takes the Arduino style but boosts it with an Arm Cortex-M0 and u-blox NINA-W10 for powerful, wireless Maker projects.

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Arduino is definitely a brand that has made a big impact on Maker communities throughout the world, bring electronics into hobbyist workshops all around the globe by making it affordable and accessible for all. And while Arduino Boards are typically well-regarded for their low cost with high level functionality, they haven’t always been considered the most powerful options out there, especially when comparing with the more recent contenders like ESP32/8266. Now, however, with the more cent addition of the modern Arduino Nano Range, this is about to change, as these boards bring the same high functionality and low cost style to the hobbyist scene – but with a lot more power and functionality than ever before!

The Arduino Nano 33 IoT is a beautiful board based on the Classic Arduino Nano design, with an extremely tiny form factor equipped with loads of tightly packed components. However, unlike the classic Nano, this board has been boosted with a powerful 32-bit ARM Cortex-M0+ MCU, as well as a secondary u-blox NINA-W10 Mutiradio MC, which are both exceptionally more powerful than the previous single ATmega328 MCU from older models. This means that it not only offers dual cores, but actually offers two cores that are each substantially more powerful than the single core on previous models.

In terms of functionality, the Arduino Nano 33 IoT offers wireless capabilities in the form of both WiFi and Bluetooth, and offers all of the functionality of a standard Arduino board as well as access to the NINA-W10 pins too. Additionally, this board has also been integrated with a fancy ECC608 Crypto Chip for an exceptional level of security when storing and transmitting sensitive data, and to top it all off, it even has a built-in LSM6DS3 Inertial Measurement Unit, which can detect both linear acceleration as well as angular motion. These are just the main features of the board, however, and we encourage you to learn more with the resources provided below.

Please Note: Although this board does include an integrated regulator onboard to step down incoming voltage through VIN, it’s important to realise that the I/O pins are not 5V tolerable, and support a maximum of 3.3V DC. However, it does require that you short the VBUS jumper on the back of the board, so we recommend this only for advanced Makers who know what they’re doing.


Arduino Nano 33 IoT  -  Technical Specifications:

  • Microcontroller (MCU)

– 32-bit ARM Cortex-M0+ SAMD21G18A                             

  • Input Voltage (VIN)

– 3.3V to 21V DC

  • Input Voltage (USB)

– 5V DC

  • Operating Voltage

– 3.3V DC (Max for I/O Pins)

  • Operating Frequency

– 48MHz

  • SRAM

– 32kB

  • Flash

– 256kB

  • Digital I/O Pins

– 14 Total | D0 to D13

  • Analog I/O Pins

– 8 Total | A0 to A7

  • PWM Pins

– D2 | D3 | D5 | D6 | D9 | D10 | D11 | D12 | D16

– A2 | A3 | A5

  • I2C

– 1

  • I2S

– N/A

  • UART Serial

– USB + 1

  • WiFi Certification

– RED | FCC | IC | MIC | NCC


  • WiFi Protocol

– IEEE 802.11b/g/n

  • Bluetooth Protocol

– Bluetooth V4.2 + EDR

  • Frequency Range (WiFi + Bluetooth)

– 2.4GHz

  • Wireless Communications IC

u-blox NINA-W10

  • Integrated Cryptographic IC

Microchip ECC608

  • Integrated Inertial Measurement IC


  • Weight (with Headers)

– 5g

  • Dimensions (w/o Headers)

– 45 x 18mm


Typical Applications for the Arduino Nano 33 IoT:

If you love the classic Arduino style, but have been looking for more power and functionality for your projects, the Arduino Nano 33 IoT offers that and so much more. With two MCU’s working side by side, a much larger flash and SRAM capacity for larger, more complex projects, as well as built-in wireless capabilities for an incredibly wide range of different applications, we’re hoping that this new Nano Range sets the benchmark for basic Microcontrollers of the future. Of course, with all of the power and functionality it offers, it goes without saying that this board can easily handle almost any Arduino projects from the past, making it both a great choice to upgrade existing projects or start even more ambitious projects that weren’t possible in the past.


Additional Resources:

  • To get acquainted with all of the basics and fundamentals of this board, check out the Official Arduino Nano 33 IoT Page.
  • Once you understand just how awesome this board is, be sure to take a look at the Arduino Nano 33 IoT Getting Started Guide, which takes you through the quick setup, with some further tutorials to help you learn the nuances.
  • While we always try to provide a good review of items we stock, since we never stock items that we don’t use ourselves, sometimes getting a fresh new opinion can really help, which is why we’ve included this Review of the Arduino Nano 33 IoT from Arrow, which takes a deep dive into the functionality and tests out some of the more unique features of the board.
  • Finally, for those of you who really want to look under the hood and see what makes this board tick, here is the SAMD21 MCU Datasheet and the u-blox NINA-W102 Datasheet.


Of course, for those of you who want to know more about this board, but enjoy a more visual approach, the following is a great video by Andreas Spiess (the guy with the Swedish accent), in which he reviews the entire new Nano range. If you want to skip past the introduction and basics, and jump straight to the juicy bits, skip forward to 4:58 in the Video, where he starts discussing specifics:


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Arduino Nano 33 IoT

Arduino Nano 33 IoT

When it comes to building unique electronics projects, there are few better ways to do it than with Arduino. Founded with the intent to make electronics prototyping accessible to all, regardless of age, culture, sex or any other factors, Arduino is one of the world’s leading designers and manufacturers of open-source hardware and software.

Some of the leading microcontroller boards that Arduino has produced include the classic Arduino UNO, as well as many variations with different specialisations and specifications. Some of the most popular Arduino boards – which we stock of course – are the Arduino Mega, Leonardo, Due, Micro, Nano, Mini, as well as the unique Arduino LilyPad. And with these boards at hand, as well as a Shield or two, you can craft thousands of different projects, with each one being tailored to your specific needs, wants and personal tastes.