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Rev

"The diode imposes a voltage drop" I noticed this too and was curios on what's going on. Thanks for your clear answer

Programmer
– Programmer

2018-11-23 23:48:02 +00:00
Commented Nov 23, 2018 at 23:48
2

As a curiosity: if you connect 5V on the Vin, it'll be injecting current back to the USB (mainly if it's powered down). Or if you accidentally short 3v3 to 5v, threshold voltage jumps over 10V. (the first one was caused by 5V voltage regulator instead of 9V. Second one by some short on shield and 9V on Vin)

KIIV
– KIIV

2018-11-24 09:16:42 +00:00
Commented Nov 24, 2018 at 9:16

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