Original Arduino Nano 33 IoT

Dieses kleine, robuste und leistungsstarke Board verfügt über WiFi- und Bluetooth-Konnektivität, die es in Kombination mit seiner stromsparenden Architektur zu einer praktischen und kostengünstigen Lösung für Ihre vernetzten Projekte macht.

Arduino Nano33 IoT ist voll kompatibel mit der Arduino IoT Cloud und unterstützt den sicheren TLS-Transport: Der Kryptochip ATECC608A speichert die kryptografischen Schlüssel in Hardware und bietet ein sehr hohes Mass an Sicherheit für diese Produktklasse. Die Integration mit der Arduino IoT Cloud bietet auch eine sehr effiziente Möglichkeit, Online-Dashboards mit wenig Programmierung und minimalem Aufwand einzurichten.

In der gleichen ikonischen Grösse wie der Arduino Nano beherbergt der Arduino Nano 33 IoT einen Arm Cortex-M0+ SAMD21 Prozessor, ein WiFi- und Bluetooth-Modul auf ESP32-Basis, eine 6-achsige Trägheitsmesseinheit (IMU) und einen Kryptochip, der Zertifikate und vorab freigegebene Schlüssel sicher speichern kann.

Die Platine kann entweder in einer Lochrasterplatine (bei der Montage von Stiftleisten) oder als SMT-Modul verwendet werden und direkt über die Wabenplatten verlötet werden.

Erste Schritte: https://www.arduino.cc/en/Guide/NANO33IoT

This board is based on the SAMD21G18A microcontroller.

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.

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 IoT, 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 IoT 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.

The communication on WiFi and Bluetooth is managed by a NINA W102 ESP32 based module. The module is connected to the SAMD21 microcontoller with an SPI BUS and a serial port through the following pins:

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:

The IMU is a LSM6DS3 and it is managed through I2C.

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.

(*) 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.

On the bottom side of the board, under the communication module, debug signals are arranged as 3x2 test pads with 100 mil pitch. Pin 1 is the bottom left one with the USB connector on the left and the test pads on the right

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