arduino nano 33 IoT
The arduino nano 33 IoT is a compact microcontroller board that is equipped with WiFi and Bluetooth connectivity - ideal for projects with multiple devices that need to communicate with each other or where data needs to be sent to servers, for example.
The board is fully compatible with the Arduino IoT Cloud and features an ATECC608A cryptochip so that communication can be fully encrypted via TLS. The integration with the Arduino IoT Cloud offers a practical way to create dashboards, for example, with little effort.
With the SAMD21 ARM Cortex-M0+ processor, the arduino nano 33 IoT offers enough performance even for demanding applications. In addition, the wireless interfaces (WLAN, BLE) are implemented using the ESP32 chipset. In addition to the Cryptochip, there is also a 6-axis IMU on the board.
Technical data
| Microcontroller | SAMD21G18A, data sheet: https://ww1.microchip.com/downloads/en/DeviceDoc/SAMD21-Family-DataSheet-DS40001882D.pdf |
| Clocking | up to 48MHz |
| Flash memory | 256 KB |
| Sram | 32KB |
Attention: In contrast to most other Arduino & Genuino boards, the arduino nano 33 IoT is operated with 3.3V - the inputs are not 5V tolerant! Tensions of more than 3.3V on the entrances can destroy the board!
| Pin | function | type | Description |
| 1 | D13 | Digital | SPI SCK, GPIO |
| 2 | +3V3 | Power out | Regulated voltage for external devices |
| 3 | AREF | Analogy | Analog reference; can be used as GPIO |
| 4 | A0/DAC0 | Analogy | ADC in/DAC out; can be used as GPIO |
| 5 | A1 | Analogy | ADC in; can be used as GPIO |
| 6 | A2 | Analogy | ADC in; can be used as GPIO |
| 7 | A3 | Analogy | ADC in; can be used as GPIO |
| 8 | A4/SDA | Analogy | ADC in; I2C SDA; can be used as GPIO |
| 9 | A5/SCL | Analogy | ADC in; I2C SCL; can be used as GPIO |
| 10 | A6 | Analogy | ADC in; can be used as GPIO |
| 11 | A7 | Analogy | ADC in; can be used as GPIO |
| 12 | VUSB | Power in/out | Not connected, can be connected to VUSB of MicroUSB socket via solder bridge |
| 13 | RST | Digital In | Active Low Reset input (connected to pin 18) |
| 14 | Gnd | power | Power Ground |
| 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 (connected to pin 13) |
| 19 | Gnd | power | mass |
| 20 | D2 | Digital | GPIO |
| 21 | D3/PWM | Digital | GPIO; can be used as a PWM output |
| 22 | D4 | Digital | GPIO |
| 23 | D5/PWM | Digital | GPIO; can be used as a PWM output |
| 24 | D6/PWM | Digital | GPIO; can be used as a PWM output |
| 25 | D7 | Digital | GPIO |
| 26 | D8 | Digital | GPIO |
| 27 | D9/PWM | Digital | GPIO; can be used as a PWM output |
| 28 | D10/PWM | Digital | GPIO; can be used as a PWM output |
| 29 | D11/MOSI | Digital | SPI MOSI; can be used as GPIO |
| 30 | D12/MISO | Digital | SPI MISO; can be used as GPIO |