Adafruit ItsyBitsy nRF52840 Express - Bluetooth LE

The Adafruit ItsyBitsy nRF52840 Express is a compact yet powerful microcontroller development board featuring the Nordic nRF52840 Bluetooth® LE processor. Measuring only 1.4" x 0.7", it offers a fast 64 MHz Cortex M4 processor with 1MB of FLASH and 256KB RAM, making it ideal for tiny wireless connectivity projects with both BLE central and peripheral support.

This board includes 21 digital GPIO pins (6 analog inputs), 6 power pins, and 2MB of QSPI Flash for data logging or CircuitPython code storage. It supports Arduino IDE and CircuitPython, allowing users to quickly program it using either platform.

Key features include a native open-source USB stack with UF2 bootloader, hardware SPI, UART, I2C, I2S on any pins, a Red LED, mini DotStar RGB LED, and a Vhigh output pin for 5V logic devices like NeoPixels or servos. The board is FCC, IC, and TELEC certified and enables versatile applications with up to +8dBm Bluetooth output power.

• Compact size: 1.4" x 0.7" x 0.2" (36.0mm x 17.6mm x 5.3mm)
• Nordic nRF52840 Cortex M4 processor @ 64 MHz
• 1024 KB flash and 256 KB RAM
• 2 MB QSPI flash memory
• Bluetooth Low Energy 2.4GHz radio, FCC/IC/TELEC certified
• 21 GPIO pins with 6 analog inputs and up to 12 PWM outputs
• Hardware SPI, UART, I2C, I2S on any pins
• Native USB support with UF2 bootloader for easy drag-and-drop programming
• Supports Arduino IDE and CircuitPython
• Includes solderable headers

Whether you want to build compact Bluetooth-enabled devices, use Python for quick programming, or need a board compatible with Arduino IDE, ItsyBitsy nRF52840 Express offers a blend of size, power, and wireless functionality to suit your development needs.