Search found 10 matches

by FaithRaven
Sat Feb 01, 2020 11:29 am
Forum: General Discussion
Topic: Proper way to power ESP32 from the main supply
Replies: 5
Views: 1408

Re: Proper way to power ESP32 from the main supply

Thank you for the links. They do indeed have a lot of options but sadly they quickly dry up when I select United Kingdom.

I guess I'll have to do some experimentation with products I find on Amazon.
by FaithRaven
Thu Jan 30, 2020 9:29 am
Forum: General Discussion
Topic: Proper way to power ESP32 from the main supply
Replies: 5
Views: 1408

Re: Proper way to power ESP32 from the main supply

mikemoy wrote:
Thu Jan 30, 2020 5:03 am
Any reputable 5v-5.1v 1A wall wart will be fine.
That's what I've read in the HUZZAH32 documentation, yes. But the trouble is that there aren't many reputable 5v-5.1v 1A power supplies available on the market.

Would a 0-2.4A self-regulating unit work well?
by FaithRaven
Wed Jan 29, 2020 1:24 pm
Forum: General Discussion
Topic: Proper way to power ESP32 from the main supply
Replies: 5
Views: 1408

Proper way to power ESP32 from the main supply

I have a few ESP32 (Adafruit HUZZAH32) that I would like to power from the main supply. I'm looking for something reliable that won't burn the house down in the long term. Before I go on a shopping spree, I would like to know what should work best: - RPI power supply (5.1V 2.5A or 5.1V 3A) - Anker (...
by FaithRaven
Sat Jan 25, 2020 5:44 pm
Forum: General Discussion
Topic: Trouble powering ESP32 using Raspberry Pi
Replies: 10
Views: 2044

Re: Trouble powering ESP32 using Raspberry Pi

Silly me, I should have thought about that, thank you. The voltage seems fine. ~5.2V on USB and ~3.3 on 3V. When `gpio_deep_sleep_hold_en()` is called the voltage is about the same in deep sleep too. The hilarious part is that everything suddenly started working. One thing I've changed is that I've ...
by FaithRaven
Thu Jan 23, 2020 6:52 pm
Forum: General Discussion
Topic: Trouble powering ESP32 using Raspberry Pi
Replies: 10
Views: 2044

Re: Trouble powering ESP32 using Raspberry Pi

I do, but you'll have to tell me where to measure ;)
by FaithRaven
Thu Jan 23, 2020 4:29 pm
Forum: General Discussion
Topic: Trouble powering ESP32 using Raspberry Pi
Replies: 10
Views: 2044

Re: Trouble powering ESP32 using Raspberry Pi

I power the RPI 4 with the Official UK Raspberry Pi 4 Power Supply (5.1V 3A). The RPI 3B has an official power supply as well.
by FaithRaven
Thu Jan 23, 2020 9:31 am
Forum: General Discussion
Topic: Trouble powering ESP32 using Raspberry Pi
Replies: 10
Views: 2044

Re: Trouble powering ESP32 using Raspberry Pi

Is anything apart from the LED and the BME680 connected to the HUZZAH32? Which pin(s) are in use? There's nothing else. The BME680 is connected via SCL/SDA, the LED via A1 (GPIO #25). Actually it's not only that one specific situation. When, on another HUZZAH32 board, I try to write to an SD card u...
by FaithRaven
Wed Jan 22, 2020 7:08 pm
Forum: General Discussion
Topic: Trouble powering ESP32 using Raspberry Pi
Replies: 10
Views: 2044

Re: Trouble powering ESP32 using Raspberry Pi

The board works just fine when it's not using much power. I have a BME680 connected to it that saves it's state into RTC. There's also a LED that's usually off. All works fine at this point. But when the LED is turned on, `gpio_deep_sleep_hold_en()` is called and the board goes into deep sleep for ~...
by FaithRaven
Wed Jan 22, 2020 5:58 pm
Forum: General Discussion
Topic: Trouble powering ESP32 using Raspberry Pi
Replies: 10
Views: 2044

Trouble powering ESP32 using Raspberry Pi

I'm trying to power my HUZZAH32 by connecting it to a Raspberry Pi 4 USB port. It's the only connected device, other the Raspberry Pi fan that's tied to a 3v pin. I'd like to do this just so I avoid having yet another power prick laying around. My ESP 32 board works perfectly fine when powered by a ...
by FaithRaven
Mon Dec 30, 2019 4:16 pm
Forum: ESP32 Arduino
Topic: Read USB Battery VCC
Replies: 0
Views: 486

Read USB Battery VCC

I'm hoping to be able to read the USB battery voltage so that I can predict when it's about to run out of juice.

For ESP8266 I've found https://github.com/micropython/micropyt ... -242315810 to work nicely. Is there something similar for ESP32?

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