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Its AC input range is 110-240V
or 5V / 7-35V external (auto-select) Regulator 500mA 5V onboard Buses I2C and SPI (via USI)
They come in both UART and SPI interface type (both have same functionality
Some of the key features of the Pro Micro ATmega32U4 include:
Once the external programmer is connected to the board
LilyPad LiPower - Wearable LiPo Boost 100f Its AC input range isA small, but very mighty power supply. This board was designed to be as small and inconspicuous as possible. The nice thing about LiPower is the ability to use rechargeable Lithium Polymer batteries. These batteries are smaller, flatter, and last much longer than a AAA battery. Attach a single cell LiPo battery, flip the power switch, and you will have a 5V supply to power your LilyPad network. Good up to 150mA. Short circuit protected. This board has
