Screen Resolution: 240 x 320 Screen size: 2.4 inches Touch screen, with the function of handwriting input Screen colour: 65 k Single 3.3 V power supply ?16-bit parallel data interface.
Model: Adafruit Assembled Data Logging shield SD card interface: FAT16 or FAT32 Onboard regulator: 3.3 V Real time clock (RTC) keeps the time going even when the Arduino is unplugged
Model: Adafruit Feather 32u4 Bluefruit LE Light as a (large?) feather ?? 5.7 grams ATmega32u4 @ 8MHz with 3.3V logic/power 3.3V regulator with 500mA peak current output
ATSAME51 32-bit Cortex M4 core with 120 MH 32-bit, 3.3 V logic and power 512 KB Flash, 192 KB RAM 2 MB SPI FLASH chip 3.3V regulator with 500mA peak current output USB Type-C
5V logic with 3.3V compatible inputs can be converted to a 3.3V logic operation 32KB Flash Memory ?? 0.5K for bootloader Four indicator LEDs Easy reprogramming 31.5KB available after bootloading 16MHz Clock Speed