Circuit Playground Bluefruit

Educational Board
Circuit Playground Bluefruit

Round educational microcontroller with Nordic nRF52840 (64MHz Cortex-M4F + BLE), 10 NeoPixels, accelerometer, microphone, light sensor, speaker, 8 alligator-clip I/O pads, and USB. Runs CircuitPython,

ARM Cortex-M4F @ 64MHz (Nordic nRF52840)256KB SRAM1MB + 2MB SPI FlashWiFi falseBLE Bluetooth 5.0 BLE (nRF52840)Zigbee falseEthernet false
~$25View

Adafruit Feather STM32F405 Express

Microcontroller Board
Adafruit Feather STM32F405 Express

High-speed Feather-form-factor dev board with STM32F405 ARM Cortex-M4F @ 168MHz, 1MB Flash, 192KB RAM, 2MB SPI Flash, USB-C, STEMMA QT, SD card socket, and LiPo charging. Adafruit's fastest CircuitPyt

ARM Cortex-M4F @ 168MHz (STM32F405)192KB SRAM1MB + 2MB SPI FlashWiFi falseBLE falseZigbee falseEthernet false
~$25View

Get notified when new devices are added.

More to explore — popular traits shared by devices with Flash: 1MB + 2MB SPI Flash.