Can anyone recheck the my esp32 devkit PCB design?

Bilal_Sikander over 2 years ago

Can anyone recheck my esp32 devkit PCB design?

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wolfgangfriedrich over 2 years ago in reply to colporteur +3

colporteur I just came across this topic. Here is an explanation from the Texas Instruments LM1117 datasheet.
scottiebabe over 2 years ago +2

I have not used an esp32, but I would suggest comparing your schematic to a nodemcu 32
misaz over 2 years ago +1

Buttons are missing pull ups, aren't they?

0 misaz over 2 years ago

Buttons are missing pull ups, aren't they?
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0 mayermakes over 2 years ago in reply to misaz

I'd also put some 10k pullups there,
I never put caps at the switches, not sure if needed.

nothing else obvious to me.
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0 scottiebabe over 2 years ago

I have not used an esp32, but I would suggest comparing your schematic to a nodemcu 32
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0 Bilal_Sikander over 2 years ago in reply to scottiebabe

Please can you share any editable file of this schematic
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0 scottiebabe over 2 years ago in reply to Bilal_Sikander

Sorry I don't know where one would find a pcb project for a nodemcu. But your schematic looks quite close, but differs in a few areas.
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0 Bilal_Sikander over 2 years ago in reply to scottiebabe

Okay Thanks
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0 donamos over 2 years ago

Hint: In the POWER section, I protect the regulator against reverse bias when switching off, with a diode from output to input. There is always charge left in circuits.
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0 colporteur over 2 years ago in reply to donamos

Can you provide some of your insight to help me understand why there is a need for the regulator protection?
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0 wolfgangfriedrich over 2 years ago in reply to colporteur

colporteur

I just came across this topic. Here is an explanation from the Texas Instruments LM1117 datasheet.
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0 colporteur over 2 years ago in reply to wolfgangfriedrich

Thanks for the response. It is a first for me but the explanation makes sense.
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