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Topic: Can someone identify this symbol in the Arduino schematic? (Read 755 times) previous topic - next topic



It is a printed circuit pad that is normally shorted out. You can cut the short and then connect it up again with a blob of solder.


Although in this particular case I believe it is used more as a multiple-ground separation technique than a "configurable connection". The designers most likely wanted to keep the USB cable ground somewhat separate from the remaining microcontroller ground (note the ATmega8U2 has separate grounds for this purpose).

The MegaRAM shield: add 128 kilobytes of external RAM to your Arduino Mega/Mega2560

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