Search found 19 matches

by ESP_Stone
Fri Nov 15, 2019 8:18 am
Forum: Report Bugs
Topic: Warning: ESP32 become hot and dead when connected to power source and type-c
Replies: 3
Views: 330

Re: Warning: ESP32 become hot and dead when connected to power source and type-c

Hi,Dreamer_mos :

Can you take a picture to show your test enviroment? As you said, boards gets hot, are VCC & GND shorted?
 
by ESP_Stone
Fri Apr 12, 2019 10:46 am
Forum: 硬件问题讨论
Topic: ESP32-WROVER-B Strapping 管脚问题
Replies: 2
Views: 838

Re: ESP32-WROVER-B Strapping 管脚问题

这个R9是没有上件的,即GPIO12在模组上没有上拉。是否是外部接了其他设备?
by ESP_Stone
Mon Mar 18, 2019 2:35 am
Forum: Hardware
Topic: Explanation on ESP32 DevitKitV1 circuitry
Replies: 2
Views: 1034

Re: Explanation on ESP32 DevitKitV1 circuitry

As you know, we may have caps on EN or GPIO0, so there would have a slow rising edge on such signals. I suggest you can use a oscilloscope to have a test which would help you understand this a lot. :D
by ESP_Stone
Mon Mar 18, 2019 2:23 am
Forum: Hardware
Topic: Issues flashing brand new ESP32 Module
Replies: 3
Views: 1074

Re: Issues flashing brand new ESP32 Module

Will pressing EN and GPIO0 buttons can make the board into downlaod mode?
by ESP_Stone
Mon Mar 18, 2019 2:20 am
Forum: Hardware
Topic: Failed to connect to ESP32 in bootloader mode
Replies: 1
Views: 730

Re: Failed to connect to ESP32 in bootloader mode

I guess there would be some timing issue about EN and GPIO0. Suggest you can use oscilloscope to measure EN and GPIO to make sure GPIO0 keeps low when EN goes high at boot mode.Thanks.
by ESP_Stone
Mon Mar 18, 2019 2:09 am
Forum: Hardware
Topic: ESP32 WROVER (I) Pullup Resistors
Replies: 5
Views: 1649

Re: ESP32 WROVER (I) Pullup Resistors

Hey, you can post your schematic here and we can help to have a double check.
by ESP_Stone
Mon Mar 11, 2019 2:24 am
Forum: Hardware
Topic: ESP32 WROVER (I) Pullup Resistors
Replies: 5
Views: 1649

Re: ESP32 WROVER (I) Pullup Resistors

1)No need...
2)It is 1.8V on-board configured. No external resistor needed. But take good care of GPIO12 whose power-on status decides the supply voltage for flash. And also, we can configure registers to change the voltage level after power on...
3)Please post your schematic here, thanks...
by ESP_Stone
Mon Mar 11, 2019 2:11 am
Forum: ESP32 IDF
Topic: SD card driving with SPI
Replies: 4
Views: 1040

Re: SD card driving with SPI

Sorry, but what does SCL mean?
by ESP_Stone
Wed Mar 06, 2019 2:29 am
Forum: Hardware
Topic: help with devkit pinout
Replies: 2
Views: 621

Re: help with devkit pinout

You can consult your supplier, but from my own point, you can use the Pin labeled "GND" as GND. :D
by ESP_Stone
Tue Mar 05, 2019 2:38 am
Forum: Hardware
Topic: ESP32 DevKitC Doesn't Boot Program
Replies: 2
Views: 890

Re: ESP32 DevKitC Doesn't Boot Program

Hey, you can check link https://docs.espressif.com/projects/esp ... vkitc.html to see "Note on C15" to confirm if C15 exists? If yes, please remove it.

Go to advanced search