21

2 devices

Adafruit Feather M4 Express

Dev Board

High-performance Feather with ATSAMD51J19 Cortex M4F at 120MHz, 192KB RAM, 512KB flash, 2MB SPI flash, dual 12-bit DAC/ADC, AES-256 hardware crypto, LiPo charging, 21 GPIO, and native USB HID. Feather

Microchip ATSAMD51J19 ARM Cortex M4F192 KB512 KB21 GPIO

Audio Synthesis High Speed Dsp education prototyping

~$23View

Adafruit Feather nRF52840 Express

Dev Board

Feather board with nRF52840 ARM Cortex-M4F at 64MHz, BLE 5.0, native USB (CDC/HID/MIDI/MSC), 1MB flash, 256KB SRAM, 2MB QSPI flash, 21 GPIO, SWD debug, and LiPo charging. Supports Arduino and CircuitP

Nordic nRF52840 ARM Cortex-M4F256 KB1 MB21 GPIOBLE BLE 5.0

Ble Beacons wearable Usb Hid Iot Sensor Platform

~$25View

Get notified when new devices are added.

More to explore — popular traits shared by devices with GPIO: 21.

Development Board