Pro Micro - 5V/16MHz (Open hardware) - EasyEDA open source

In EasyEDA open source hardware lab, open source square pools all kinds of electrical design engineerings together to realize resource sharing easily.

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Pro Micro Microcontroller ATmega32U4 5V 16MHz - kriscables

Paws - The Ultra-Customizable Macro-Pad

Control 2 Motors Board - EasyEDA open source hardware lab

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Subwoofer filter 4558 Resources - EasyEDA

microUPDI - Pro-Micro Based UPDI Programmer

16mhz crystal oscillator - Search - EasyEDA

Relay module 4 CH - EasyEDA open source hardware lab

voltage regulator - Arduino Pro Micro Frying Up - Electrical Engineering Stack Exchange

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How to make Arduino Uno clone board

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Lamp PCB - EasyEDA open source hardware lab

Arduino Pro Mini 328 - 5V/16MHz (Open hardware) - EasyEDA open source hardware lab