On Off switch on ESP32 devices with battery

Q&A Forum › Category: ESP32 › On Off switch on ESP32 devices with battery

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Hugo Articardi Calabrese asked 10 months ago

Hi,

I have some devices Lolin32 with battery and also powered by usb connector.

In order to build a usable device, I need to add an on/off switch… which is the better way ???

Hack the hardware ?

Put a switch to an GPIO and use sleep mode ??? If this is a solution… can you explain it ?

Thanks in advance !!!

4 Answers

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Sara Santos Staff answered 10 months ago

Hi Hugo.

I’m sorry for taking so long answering your question.

What do you mean by an ON/OFF switch?

Do you want to cut power completely? If that’s the case, the best way is to put a switch in series with the power supply.

However, depending on your application, deep sleep mode might be a better scenario. But it really depends on your project.

Can you provide more details?

Regards,
Sara

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Hugo Articardi Calabrese answered 10 months ago

Dear Sara, thank you for your response.
In my case, I think deep sleep is a good solution.
Can you suggest me an example to do this ???
I mean, start and quit deep sleep mode with a switch to a GPIO. May be ?
Thanks in advance. Hugo.

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Sara Santos Staff answered 10 months ago

Hi Hugo.
In that case, you’re talking about deep sleep with external wake-up.
You can take a look at the ESP32 course Module 3, unit 4: https://rntlab.com/module-3/deep-sleep-external-wake-up/
Then, let me know if you need further help.
Regards,
sara

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Hugo Articardi Calabrese answered 10 months ago

Hi Sara, thanks again. I will follow your suggestions.
And I will keep you informed !
Best Regards. Hugo.