Serial Basic & external power

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Serial Basic & external power

Post by RobRob » Sun Jan 20, 2019 12:20 pm

SparkFun Serial Basic Breakout - CH340G

Is is ok to have an external power source connected while using the Serial Basic? I'm using a breadboarded Arduino (atmega328) with 5V supplied by LM7805 regulator with smoothing caps and protection diode and resettable fuse.

Can I just not connect VCC and GND on the Serial Basic?

If it is ok, are there any other things I need to consider?

Thanks, Robby R.

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