ESP32 NMMiner reboots unexpectedly

[robedi]

Hi,

I got the esp32-32e-lcd-display-40inch model and have updated it to 2.0.02 firmware. Since then, I encounter issues where the NMMiner is rebooting on its on. The reboot interval varies between every 2 minutes to 10 minutes. No error messages were found related to this issue in the logs. The issue is intermittent and can't be reproduced on demand.

Attempted steps to resolve the issue:

1. Upgraded from 1.8.29 to 2.0.02 > issue started
2. Downgrade to 2.0.01 > issue remains
3. Downgrade to 1.8.29 (was working for me) > issue remains
4. Erased flash and installed 2.0.02 > issue remains

[pigskins65]

Are you sure you chose the correct firmware file? How are you powering it, and did you move it recently? When I had a similar issue it was either the pool going offline or my power supply was not sufficient. Bad cable could do it too.

[drakierd]

Are you seeing any pool issues or connection issues related to the pool in the logs?

My nmminer reboots itself occasionally when it has pool connection issues, so maybe something flakey with that. Especially if you are seeing it still even after resetting and downgrading. Makes me think it's not the firmware that is the problem but an external factor that the miner is taking into consideration causing the restart.

So I'd double check the logs for connection issues, especially if it's happening so often.. it's not like it takes as long to verify as "days" between restarts (which mine does sometimes).

[robedi]

Firmware used: esp32-3248s035
Flashed from: https://flash.nmminer.com/

Just got the reboot again... Logs below... Error message now included...

ESP Web Flasher loaded.
Connecting...
Connected successfully.
Try hard reset.
Chip type ESP32
Connected to ESP32
MAC Address: 88:57:21:BB:CC:18
Uploading stub...
Running stub...
Stub is now running...
Detecting Flash Size
FlashId: 0x16405E
Flash Manufacturer: 5e
Flash Device: 4016
Auto-detected Flash size: 4MB
Attempting to change baud rate to 921600...
[Object.debug:362] Finished read loop
Changed baud rate to 921600
Reset Device, Enter Console Only mode!
Attempting to change baud rate to 115200...
[Object.debug:362] Finished read loop
Changed baud rate to 115200
Try hard reset.
ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x17 (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:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
[+00:00:00:097] cyd3.5 init
[+00:00:00:849] UIManager: 6 page(s) registered
[+00:00:04:242] License verification passed
[+00:00:09:692] Waiting ip 1s...
[+00:00:10:693] Waiting ip 2s...
[+00:00:11:693] Waiting ip 3s...
[+00:00:12:693] Waiting ip 4s...
[+00:00:13:693] Waiting ip 5s...
[+00:00:14:554] WiFi connected: 192.168.0.176
[+00:00:15:905] (webserver) starting on core 1
[+00:00:15:944] (webserver) LittleFS mounted, total=393216, used=237568 (60.4%)
[+00:00:16:059] (webserver) ETag /index.html.gz  = "4c62dc6d1c250e84"
[+00:00:16:059] (webserver) ETag /apidoc.html.gz = "212918ea9866540c"
[+00:00:16:080] (webserver) web server started on port 80
[05/14 22:16:13:000] NTP synced via pool.ntp.org , 2026/05/14 22:16:13
[05/14 22:16:18:932] stratum: thread started on core 0
[05/14 22:16:18:962] stratum: resolving [dgb-stratum.solominer.net] -> [199.241.139.208]
[05/14 22:16:19:201] stratum: connected [dgb-stratum.solominer.net:3333]
[05/14 22:16:19:202] stratum: mining.subscribe ...
[05/14 22:16:19:283] NMMiner::begin: all tasks started
[05/14 22:16:19:755] stratum: subscribed, extranonce1=aacf4f9d, en2_size=4
ng.authorize DK1uxgLKjHWcV7b9XKcJP6Dsh4BERGy4Wn.RoBeDi02
Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.

Core  0 register dump:
PC      : 0x401536cb  PS      : 0x00060c30  A0      : 0x8014937c  A1      : 0x3fff0dd0  
A2      : 0x00000001  A3      : 0x3fff5f4c  A4      : 0x3ffd1514  A5      : 0x00000035  
A6      : 0x00000004  A7      : 0x00000000  A8      : 0x00000000  A9      : 0x00000000  
A10     : 0x00000000  A11     : 0x80000001  A12     : 0x80096150  A13     : 0x3ffea0e0  
A14     : 0x00000003  A15     : 0x00060023  SAR     : 0x00000018  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000015  LBEG    : 0x4008dd10  LEND    : 0x4008dd1a  LCOUNT  : 0x00000000  

Backtrace: 0x401536c8:0x3fff0dd0 0x40149379:0x3fff0e10 0x40149466:0x3fff0e50 0x40149f79:0x3fff0e70 0x40149fd1:0x3fff0ec0 0x400fd675:0x3fff0ee0 0x400fc517:0x3fff0f20 0x4012b636:0x3fff0f50 0x4012c90f:0x3fff0f80 0x4012cb2f:0x3fff0ff0 0x400e3c6f:0x3fff1010 0x400e3e89:0x3fff10a0 0x400db51d:0x3fff10e0

ELF file SHA256: 2d2037de29ff764b

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x17 (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:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
[05/14 20:16:21:960] cyd3.5 init
[05/14 20:16:22:712] UIManager: 6 page(s) registered
[05/14 20:16:26:104] License verification passed

[robedi]

Another reboot...

[05/14 22:23:31:804] Job [45514c] from [dgb-stratum.solominer.net:3333]
[05/14 22:23:31:808] Job clean...
[05/14 22:23:31:818]  ---------------------------------------000d 00:07:09--------------v2.0.02 -------------------------------------
[05/14 22:23:31:829] |  hash rate  |  share(R/A)  | net diff | pool diff | last diff | best diff |  hits | freeheap | temp |  rssi  |
[05/14 22:23:31:839] |  1.0425MH/s |     2/44     |  548.6M  |  0.0032   |  0.0820   |  4.2747   |   0   |  54.68kB |  N/A | -44dBm |
[05/14 22:23:34:851]  ---------------------------------------000d 00:07:12--------------v2.0.02 -------------------------------------
[05/14 22:23:34:862] |  hash rate  |  share(R/A)  | net diff | pool diff | last diff | best diff |  hits | freeheap | temp |  rssi  |
[05/14 22:23:34:873] |  1.0422MH/s |     2/44     |  548.6M  |  0.0032   |  0.0820   |  4.2747   |   0   |  54.68kB |  N/A | -43dBm |
abort() was called at PC 0x401b6627 on core 1
Backtrace: 0x4008757d:0x3ffefdf0 0x400927c5:0x3ffefe10 0x400982b1:0x3ffefe30 0x401b6627:0x3ffefeb0 0x401b666e:0x3ffefed0 0x401b65cf:0x3ffefef0 0x401b6936:0x3ffeff10 0x40109b19:0x3ffeff30 0x400e4989:0x3ffeff50 0x4010dd16:0x3ffeffa0 0x401f38e7:0x3ffeffe0 0x401093c1:0x3fff0000 0x400f84be:0x3fff0020 0x4010d94a:0x3fff0040 0x40109ea5:0x3fff00d0 0x400f84be:0x3fff0120 0x4010d94a:0x3fff0140 0x4010a406:0x3fff01d0 0x4010b12b:0x3fff0210 0x4010b38d:0x3fff0250 0x4010880d:0x3fff0270 0x40108899:0x3fff02a0 0x4010904e:0x3fff02c0
ELF file SHA256: 2d2037de29ff764b

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x17 (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:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
[05/14 20:23:34:249] cyd3.5 init
[05/14 20:23:35:001] UIManager: 6 page(s) registered

[robedi]

OK, last update

Another reboot:

[05/14 22:26:35:504] |  hash rate  |  share(R/A)  | net diff | pool diff | last diff | best diff |  hits | freeheap | temp |  rssi  |
[05/14 22:26:35:545] 
abort() was called at PC 0x401b6627 on core 1
Backtrace: 0x4008757d:0x3fff0060 0x400927c5:0x3fff0080 0x400982b1:0x3fff00a0 0x401b6627:0x3fff0120 0x401b666e:0x3fff0140 0x401b686d:0x3fff0160 0x401b6928:0x3fff0180 0x4010966a:0x3fff01a0 0x4010a481:0x3fff0210 0x4010b12b:0x3fff0250 0x4010b38d:0x3fff0290 0x4010880d:0x3fff02b0 0x40108899:0x3fff02e0 0x4010904e:0x3fff0300
ELF file SHA256: 2d2037de29ff764b
Rebooting...
ets Jul 29 2019 12:21:46
rst:0xc (SW_CPU_RESET),boot:0x17 (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:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
[05/14 20:26:36:323] cyd3.5 init
[05/14 20:26:37:075] UIManager: 6 page(s) registered
[05/14 20:26:40:468] License verification passed

[robedi]

I have now flashed it with esp32-32e-lcd-display-40inch. But the issue remains...

[wibble007]

I'm experiencing this as well, was fine up until the last two updates but now get random reboots across 4 devices.