[CLOSED]"Brownout detector was triggered" failure on my ESP32

Python Schlange
Posts: 2
Joined: Sat Jun 27, 2020 4:52 pm

[CLOSED]"Brownout detector was triggered" failure on my ESP32

Postby Python Schlange » Sat Jun 27, 2020 5:37 pm

Hello,
I tried to upload my code, everything worked but when I opened the Serial Monitor, it showed me that Issue:
  1. Brownout detector was triggered
  2.  
  3. ets Jun  8 2016 00:22:57
  4.  
  5. rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
  6. configsip: 0, SPIWP:0xee
  7. clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
  8. mode:DIO, clock div:1
  9. load:0x3fff0018,len:4
  10. load:0x3fff001c,len:1216
  11. ho 0 tail 12 room 4
  12. load:0x40078000,len:9720
  13. ho 0 tail 12 room 4
  14. load:0x40080400,len:6352
  15. entry 0x400806b8
PS: I tried to search a topic, but I just got a blank page so I started a new topic.
Last edited by Python Schlange on Sat Jun 27, 2020 5:58 pm, edited 1 time in total.

lbernstone
Posts: 70
Joined: Mon Jul 22, 2019 3:20 pm

Re: "Brownout detector was triggered" failure on my ESP32

Postby lbernstone » Sat Jun 27, 2020 5:50 pm

Your USB port is not providing enough power. Try another port, or else you will need an external power source (perhaps a powered USB hub).

ESP_Sprite
Posts: 3732
Joined: Thu Nov 26, 2015 4:08 am

Re: "Brownout detector was triggered" failure on my ESP32

Postby ESP_Sprite » Sat Jun 27, 2020 5:52 pm

Also, suspect your USB cable. There are some with extremely thin conductors out there.

Python Schlange
Posts: 2
Joined: Sat Jun 27, 2020 4:52 pm

Re: "Brownout detector was triggered" failure on my ESP32

Postby Python Schlange » Sat Jun 27, 2020 5:57 pm

Sorry for the whole topic, just realized I had got the wrong Uploadspeed (921600) :oops: .
Changed it to 115200 and everything is working :D

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ESP_krzychb
Posts: 290
Joined: Sat Oct 01, 2016 9:05 am
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Re: [CLOSED]"Brownout detector was triggered" failure on my ESP32

Postby ESP_krzychb » Sat Jun 27, 2020 6:16 pm

Hi Python Schlange,

Upload speed should not be the issue. This message is reported when voltage supplied to the chip gets too low. A spike below the brownout voltage (I believe default is 2.44 V) is enough to trigger this error. If you see this message again try replacing power supply, USB cable, install capacitor on power supply terminals of your module, etc.

Also refer to https://github.com/nkolban/esp32-snippets/issues/168 for related discussion.

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