Arduino Launches Arduino Nano 33 IoT Board
If you are an Arduino fan and following their development, then you would have seen the new direction in which Arduino is going now. In last 12 months Arduino has launched multiple IoT products from board to IoT sim cards to IoT cloud. We have already covered Arduino MKR series board for IoT development which was launched early this year followed by various MKR shields, Online Editor and IoT cloud. On May 24th 2018, Arduino announced a new upgrade to its nano series of development boards. In this post I am covering the Arduino Nano 33 IoT board which is catching a lot of attention.
The Nano 33 IoT is part of the new 3.3V variant of the family, adding a pre-certified ESP32-based WiFi and Bluetooth module that brings sophisticated connectivity to its tiny package combined with its low power architecture makes it a practical and cost effective solution for your connected projects. The inclusion of an ECC608A crypto chip provides the security that Arduino users are now used to as opposed to other competing solutions that lack a secure key storage.
Arduino Nano 33 IoT is fully compatible with the Arduino IoT Cloud and supports full TLS secure transport: the ATECC608A cryptochip stores the cryptographic keys in hardware, offering a very high level of security for this class of products. The integration with the Arduino IoT Cloud offers also a very efficient way of setting up online dashboards with little coding and minimal effort .
In the same iconic size of the Arduino Nano, the Arduino Nano 33 IoT hosts an Arm Cortex-M0+ SAMD21 processor, a WiFi and Bluetooth module based on ESP32, a 6 axis Inertial Measurement Unit (IMU) and a crypto chip which can securely store certificates and pre shared keys.
The board can either be used in a breadboard (when mounting pin headers), or as a SMT module, directly soldering it via the castellated pads.
This board is based on the SAMD21G18A microcontroller.
|Clock||up to 48MHz|
Please note: Arduino Nano 33 IoT 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.
|SAMD21 Pin||SAMD21 Acronym||NINA Pin||NINA Acronym||Description|
|23||PA14||28 / 21||GPIO5 / GPIO19||SPI CS / UART RTS|
|24||PA15||29 / 20||GPIO18 / GPIO22||SPI CLK / UART CTS|
|31||PA22||23||GPIO3||Processor TX -> Nina RX|
|32||PA23||22||GPIO1||NINA TX -> Processor RX|
Some of the NINA W102 pins are connected to the 15+15 pins headers/pads and can be directly driven by the module’s ESP32; in this case it is necessary that the SAMD21 corresponding pins are aptly tri-stated. Below is a list of such signals:
|SAMD21 Pin||SAMD21 Acronym||NINA Pin||NINA Acronym||Header Description|
|7||PB08||35||GPIO5 / GPIO19||A4/SDA|
The IMU is a LSM6DSL and it is managed through I2C.The board has a two 15 pins connectors – one on each side -, pin to pin compatible with the original Arduino Nano.
The crypto chip is an ATECC608A and has a supporting library that is used by the WiFiNINA library.
The board has a two 15 pins connectors – one on each side -, pin to pin compatible with the original Arduino Nano.
|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 (*)|
|9||A5/SCL||Analog||ADC in; I2C SCL; Can be used as GPIO(*)|
|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 connector by shorting a jumper|
|13||RST||Digital In||Active low reset input (duplicate of pin 18)|
|15||VIN||Power In||Vin Power input|
|16||TX||Digital||USART TX; can be used as GPIO|
|17||RX||Digital||USART RX; can be used as GPIO|
|18||RST||Digital||Active low reset input (duplicate of pin 13)|
|21||D3/PWM||Digital||GPIO; can be used as PWM|
|23||D5/PWM||Digital||GPIO; can be used as PWM|
|24||D6/PWM||Digital||GPIO; can be used as PWM|
|27||D9/PWM||Digital||GPIO; can be used as PWM|
|28||D10/PWM||Digital||GPIO; can be used as PWM|
|29||D11/MOSI||Digital||SPI MOSI; can be used as GPIO|
|30||D12/MISO||Digital||SPI MISO; can be used as GPIO|
(*) 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. 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.
|1||+3V3||Power Out||Internally generated power output to be used as voltage reference|
|2||SWD||Digital||SAMD11 Single Wire Debug Data|
|3||SWCLK||Digital In||SAMD11 Single Wire Debug Clock|
|4||UPDI||Digital||ATMega4809 update interface|
|6||RST||Digital In||Active low reset input|
Few applications for which this board a great option
- Add WiFi and Bluetooth connectivity with strong security to all the existing Arduino Nano applications.
- On-board IMU can be used to wirelessly monitor vibration, orientation, and rotational speed of small objects thanks to its lightweight and compact form factor.
- Run directly from high voltages from lead or multi-cell Lithium-ion batteries providing 3.3V power supply to peripherals at significant output current.
Currently, you can place a pre-order for Arduino Nano 33 IoT. Shipment will start from June end as per Arduino officials.