DFRobot Beetle CM-32U4

DFRobot Beetle CM-32U4

Ultra-compact Arduino Leonardo-compatible microcontroller board with ATmega32U4, integrated lithium battery charging, and native USB in a tiny 22x20.5mm form factor.

AVR 8-bit single-core @ 16MHz2.5KB SRAM32KB

DFRobot Beetle Board

DFRobot Beetle Board

The original coin-sized Arduino Leonardo-compatible board with ATmega32U4, native USB, 10 digital and 5 analog pins, and sewable gold-plated pads in a 20x22mm form factor.

AVR 8-bit single-core @ 16MHz2.5KB SRAM32KB

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More to explore — popular traits shared by devices with USB: Micro-USB (native USB 2.0 Full-speed).