Powering Nano From Serial Pin?

Official Hardware Nano Family Classic Nano
1

Hi,

I have some code the will run on a Nano (atmega328p). It's communication is via DB9 serial from a PC. Is there a pin on the serial port that is always high where I can make it power the Nano and the serial chip needed. This would therefore remove the need for external power, making it a plug and play device.

2

no there isn't. Check the Nano power needs; it's not the sort of current a signal line would provide.
C

3

Is there a reason why you don't use USB? That would make it plug-and-play (if the correct driver is installed on the PC)?

4

OK Thanks all.

5

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