Search found 83 matches

by username
Wed May 08, 2019 11:30 am
Forum: General Discussion
Topic: What would I need to enable flashing to a ESP32-WROOM-32
Replies: 9
Views: 551

Re: What would I need to enable flashing to a ESP32-WROOM-32

That means pulling both GPIO0 and GPIO2(fixed) low. There is more to it than this, you also need to control the EN pin as well. To put the device into programming mode you need to pull EN & GPIO0 low. Then release EN, and moments later release GPIO0. You don't need to fiddle or control GPIO2 at all...
by username
Tue May 07, 2019 3:56 pm
Forum: General Discussion
Topic: is there any issue using io0/io4 for i2c?
Replies: 7
Views: 611

Re: is there any issue using io0/io4 for i2c?

You never want to use internal pullups for I2C on ANY device. They will all be too weak to do the job properly.
by username
Tue Apr 30, 2019 11:30 am
Forum: Showcase
Topic: Training Course About ESP32 and ESP8266 with SDK-IDF 3.2
Replies: 1
Views: 305

Re: Training Course About ESP32 and ESP8266 with SDK-IDF 3.2

Looks very cool, but being in Portuguese, I don't see allot of people being able to making use of it.
by username
Fri Apr 26, 2019 1:22 am
Forum: Hardware
Topic: 3.0V 700mA LDO?
Replies: 1
Views: 240

Re: 3.0V 700mA LDO?

why don't you just connect it to a lab power supply set for 3.0v and try it.
by username
Sun Apr 21, 2019 3:04 am
Forum: Hardware
Topic: ESP32-DevKitC V4 flash memory available
Replies: 1
Views: 251

Re: ESP32-DevKitC V4 flash memory available

They have the data sheet link right there on mousers site.
Per the data sheet:
"Both ESP32-WROOM-32D and ESP32-WROOM-32U integrate a 4 MB of external SPI flash"
by username
Thu Apr 18, 2019 2:16 am
Forum: ESP32 IDF
Topic: How to remove PWM signal from the pin?
Replies: 4
Views: 273

Re: How to remove PWM signal from the pin?

you dont need to de-init the pin. just set the PWM to 0.
by username
Wed Apr 17, 2019 1:59 am
Forum: General Discussion
Topic: Can the output current of the esp32 GPIO be reduced?
Replies: 20
Views: 9445

Re: Can the output current of the esp32 GPIO be reduced?

In my application, the ESP32 needs to drive an external contactor, which draws 29mA from the pin. It works, but I don't know if that can safely be done for 1-2 hours, or if I risk damaging the esp32 and better use a relay (there is only very little space, unfortunately). The typical method is to us...

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