Arduino IL Drive Sim read good write bad

[ThomasF]

(04-27-2023 06:51 AM)J-F Garnier Wrote:  Connecting both the ESP and the USB on the same serial lines creates a electrical conflict on the Tx line (towards the PIL-Box IC) - the strongest wins.
I would recommend to insert a e.g. 10k resistor in the Tx line from the USB, so the ESP will take precedence softly, and if not present the USB will still operate.

Thanks for the info J-F!

I never thought of connecting both at the same time, but it might be worth adding some protection in case of!
If I find a good enclosure I would wire so that I had to remove the ESP to use USB, eg. with a switch to allow either.
The switch could enable ESP (and the battery) as well as disabling USB, or vice versa.

Cheers,
Thomas