Comments on: ESP32-CAM Troubleshooting Guide: Most Common Problems Fixed

By: Sara Santos

Sara Santos — Sun, 26 Apr 2026 20:28:17 +0000

Hi.
Try to upload a blank sketch to your board to “reset” it.
The issue must be related with the new code/core combination.
What code exactly are you trying to run?
Regards,
Sara

By: Philipp Klaus

Philipp Klaus — Tue, 21 Apr 2026 16:12:09 +0000

I have two ESP32-CAM boards, both worked with the standard web server sketch using Arduino IDE 1.8.19 and ESP Core 2.0.2. I then extended the sketch a bit and uploaded the changed sketch using ESP Core 3.3.8. After that I only got “Brownout detector was triggered” shortly after the first boot messages. I changed back to ESP Core 2.0.2 but still got this message. As I couldn’t believe that the new core was the problem I tried to upload a new sketch to the other board after testing if the old sketch was working without any problems. Immediately after uploading a sketch compiled with the new core the brownout messages appeared there too and even a switch back to the 2.0.2 core can revive any of the two boards.
I didn’t yet believe that code can damage a hardware but I changed my mind after seeing these boards dying. Do you have any hint how I might get the boards working again? I tried to solder a 470µF capacitor to 5V and to 3.3V, both versions didn’t removed the brownout message.

By: Sara Santos

Sara Santos — Sun, 15 Mar 2026 19:30:10 +0000

In reply to fernando prudencio giovanini.

Hi.
What do you mean by all ESP32-CAM projects?

Which version of the ESP32 boards you have installed in your Arduino IDE?
Which board are you selecting in Tools > Boards?

Regards,
Sara

By: fernando prudencio giovanini

fernando prudencio giovanini — Wed, 11 Mar 2026 13:49:34 +0000

DEAR SARA

Could you plese hel me . All the esp32 cam projects gave the same error:

Board
ESP32 Cam

Device Description
ESP32-CAM

Hardware Configuration
camera OV2640

Version
v3.3.0

IDE Name
Arduino IDE 1.8.19

Operating System
Windows 10

ELF file SHA256: eda518d71

Rebooting…
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:4980
load:0x40078000,len:16612
load:0x40080400,len:3480
entry 0x400805b4
Setting AP (Access Point)…Camera Stream Ready! Connect to the ESP32 AP and go to: http://192.168.4.1
Guru Meditation Error: Core 0 panic’ed (Unhandled debug exception).
Debug exception reason: Stack canary watchpoint triggered (cam_task)
Core 0 register dump:
PC : 0x4008e31a PS : 0x00060b36 A0 : 0x8009262c A1 : 0x3ffb2550
A2 : 0x3ffb0300 A3 : 0xffffffff A4 : 0xb33fffff A5 : 0x3f416d84
A6 : 0x00000000 A7 : 0x00000001 A8 : 0x00060b23 A9 : 0x3ffb2550
A10 : 0x00000003 A11 : 0x00060b23 A12 : 0x00060b23 A13 : 0x0000001f
A14 : 0x3ffb2ab0 A15 : 0xff000000 SAR : 0x00000004 EXCCAUSE: 0x00000001
EXCVADDR: 0x00000000 LBEG : 0x4008aaf1 LEND : 0x4008ab01 LCOUNT : 0xfffffffe

Backtrace: 0x4008e317:0x3ffb2550 0x40092629:0x3ffb2580 0x4009265e:0x3ffb25a0 0x400927d4:0x3ffb25c0 0x400830df:0x3ffb25e0 0x400830f9:0x3ffb2610 0x40082d75:0x3ffb2630 0x4008e804:0x3ffb2650 0x4008d895:0x3ffb2670 0x4008db0c:0x3ffb2690 0x4008375e:0x3ffb26b0 0x400837a6:0x3ffb26d0 0x40083909:0x3ffb2700 0x400e1675:0x3ffb2720 0x400e5c41:0x3ffb2750 0x4000bd83:0x3ffb2770 0x4000182a:0x3ffb2790 0x400e52e9:0x3ffb27b0 0x400e5c41:0x3ffb27d0 0x4008a7aa:0x3ffb27f0 0x40089c4d:0x3ffb2810 0x40089c9e:0x3ffb2830 0x4008a19d:0x3ffb2850 0x40173897:0x3ffb2880 0x401732ae:0x3ffb28a0 0x40169fd5:0x3ffb2bc0 0x400938a9:0x3ffb2bf0 0x40116f09:0x3ffb2c50 0x4008e1f5:0x3ffb2ca0

tks

By: Jiten

Jiten — Sun, 22 Feb 2026 17:51:44 +0000

In reply to Parth. have you resolved this issue?

By: Sara Santos

Sara Santos — Wed, 03 Dec 2025 14:47:11 +0000

In reply to jericho.

Hi.
What code are you running on your board?
Regards,
Sara

By: jericho

jericho — Wed, 03 Dec 2025 09:43:28 +0000

can you help me with this

Initializing camera…
Guru Meditation Error: Core 1 panic’ed (LoadProhibited). Exception was unhandled.

Core 1 register dump:
PC : 0x40094662 PS : 0x00060430 A0 : 0x80093c89 A1 : 0x3ffb20b0
A2 : 0xffffffff A3 : 0x00000010 A4 : 0x00000000 A5 : 0x00000008
A6 : 0x00000039 A7 : 0x00000000 A8 : 0x00012c0c A9 : 0xffffffff
A10 : 0xfffffffc A11 : 0x3ffb4208 A12 : 0x00000004 A13 : 0x00000010
A14 : 0x00000000 A15 : 0x3ffae87c SAR : 0x00000020 EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000000f LBEG : 0x4008a650 LEND : 0x4008a65b LCOUNT : 0x00000000

Backtrace: 0x4009465f:0x3ffb20b0 0x40093c86:0x3ffb20d0 0x40093e2f:0x3ffb20f0 0x40082d56:0x3ffb2110 0x40082ba2:0x3ffb2140 0x40124deb:0x3ffb2160 0x40124716:0x3ffb21a0 0x400ddd8a:0x3ffb2200 0x400d39be:0x3ffb2220 0x400e56d6:0x3ffb2270 0x4008fa8d:0x3ffb2290

By: Alessandro

Alessandro — Wed, 01 Oct 2025 14:32:51 +0000

In reply to frank. Having the same issue... Did you solve it?

By: frank

frank — Sun, 14 Sep 2025 16:46:25 +0000

It works with this repo: github.com/s60sc/ESP32-CAM_MJPEG2SD

By: frank

frank — Sat, 13 Sep 2025 17:01:47 +0000

and before that Guru Meditation:

18:46:16.562 -> Rebooting…
18:46:16.562 -> ets Jul 29 2019 12:21:46
18:46:16.562 ->
18:46:16.562 -> rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
18:46:16.608 -> configsip: 0, SPIWP:0xee
18:46:16.608 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
18:46:16.608 -> mode:DIO, clock div:1
18:46:16.608 -> load:0x3fff0030,len:4980
18:46:16.608 -> load:0x40078000,len:16612
18:46:16.608 -> load:0x40080400,len:3480
18:46:16.608 -> entry 0x400805b4