In my project I have to Wemos D1 Mini's.
1 as Station, the other as Access Point.
Station will remain plugged in via USB
The AP Wemos, I want to run either on USB power or 2 AA batteries with on/off switch.
Best feasible way to protect the 2AA batteries? I'm thinking Diode... but I don't know enough about diodes to make the proper selection.
I apologise up front. I posed that in another thread. I couldn't find that post or my question. So I'm reposting. I'm still working on schematic diagram. I just saw an error, so have to redraw. Kids ate the eraser.
Tinman: that is correct. In my original design, I had no switch. All positives were tied together and the same with GND. Was worried about what would happen to the batteries.
I think I got this now. Waiting on my Wemos D1 mini from China.