Arduino Nano 33 IoT Microcontroller Board with Headers
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Description
The Arduino Nano 33 IoT with Headers is a compact 3.3V development board powered by a 32-bit Arm Cortex-M0+ SAMD21 microcontroller. Equipped with built-in Wi-Fi, Bluetooth, a cryptographic security chip, and a 6-axis IMU, it provides an accessible entry point into Internet of Things projects. It is an ideal platform for students, educators, and makers building connected devices and remote sensor networks.
Connected and secure processing
The board features a 48MHz SAMD21 Cortex-M0+ processor with 256KB flash memory and 32KB SRAM. Wireless communication is powered by a u-blox NINA-W102 module supporting 2.4GHz Wi-Fi and BLE, paired with an ATECC608A crypto element for secure data transmission.
Integrated motion sensing
An onboard LSM6DS3 6-axis IMU provides real-time motion and orientation tracking directly on the board. This built-in sensor makes the Nano 33 IoT well suited for vibration alarms, pedometers, and relative positioning in robotics.
Flexible inputs and interfaces
The board delivers 14 digital I/O pins, 11 PWM channels, 8 analog inputs with selectable 8/10/12-bit ADC resolution, and a 10-bit analog DAC output. Dedicated hardware interfaces include UART, SPI, I2C, and native USB built into the SAMD21 MCU.
Breadboard-ready design
Measuring just 45 mm by 18 mm and weighing 5 grams, this model comes with pre-soldered header pins for quick insertion into breadboards and prototyping sockets.
Downloads
Specifications
| Device | Nano 33 IoT |
| Type | with Headers |
| Microcontroller | SAMD21 Cortex-M0+ 32bit low power ARM MCU |
| Radio module | u-blox NINA-W102 |
| Secure Element | ATECC608A |
| Operating Voltage | 3.3V |
| Input Voltage (limit) | 21V |
| DC Current per I/O Pin | 7 mA |
| Clock Speed | 48MHz |
| CPU Flash Memory | 256KB |
| SRAM | 32KB |
| Digital Input Output Pins | 14 |
| PWM Pins | 11 |
| Analog Input Pins | 8 (ADC 8/10/12 bit) |
| Analog Output Pins | 1 (DAC 10 bit) |
| Interfaces | UART, SPI, I2C, Native USB |
| IMU | LSM6DS3 |
| Dimensions | 45 mm x 18 mm |
| Weight | 5 gr (with headers) |
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