Adafruit ItsyBitsy nRF52840 Express - Bluetooth LE

It's an Adafruit ItsyBitsy nRF52840 Express featuring the Nordic nRF52840 Bluetooth LE processor! Teensy & powerful, with an fast nRF52840 Cortex M4 processor running at 64 MHz and 1 MB of FLASH - this microcontroller board is perfect when you want something very compact, with a heap-load of memory and Bluetooth LE support This Itsy is your best option for tiny wireless connectivity - it can act as both a BLE central and peripheral, with support in both Arduino and CircuitPython

Features:

• Same size, form-factor as the remaining ItsyBitsy mainboards - with a similar but not identical pinout (there's no pins at the end of the board like most other Itsy's due to the radio antenna being there.
• Floating point support with Cortex M4 DSP instructions
• 32-bit, 3.3V logic and power with power/enable pin
• 1024 KB flash, 256 KB RAM
• 2 MB QSPI FLASH chip for storing files and CircuitPython code storage.
• Native Open Source USB stack - pre-programmed with UF2 bootloader
• Bluetooth Low Energy compatible 2.4GHz radio (Details available in the nRF52840 product specification)
• FCC / IC / TELEC certified module
• Up to +8dBm output power
• 21 GPIO, 6 x 12-bit ADC pins, up to 12 PWM outputs (3 PWM modules with 4 outputs each)
• Red LED for general purpose blinking, mini DotStar RGB LED for colorful feedback
• 1 x Special Vhigh output pin gives you the higher voltage from VBAT or VUSB, for driving NeoPixels, servos, and other 5V-logic devices. Digital 5 level-shifted output for high-voltage logic level output.
• Native USB supported by every OS - can be used in Arduino or CircuitPython as USB serial console, Keyboard/Mouse HID, even a little disk drive for storing Python scripts.
• Can be used with Arduino IDE or CircuitPython
• Comes pre-loaded with the UF2 bootloader, which looks like a USB storage key. Simply drag firmware on to program, no special tools or drivers needed! It can be used to load up CircuitPython or Arduino IDE