Brownout detector was triggered

[ilium007]

Specs say that the ESPFlasher has a 600mA voltage regulator on board. How can I be getting a brownout reboot loop when using the ESPFlasher on an Adafruit Huzzah32 ESP32 board when connected trying to access serial console?

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FST_FLSH_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:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:8896
load:0x40080400,len:5828
entry 0x400806ac
Connecting to WiFi (24:6F:28:3:2:00)...

Brownout detector was triggered

ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FST_FLSH_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:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:8896
load:0x40080400,len:5828
entry 0x400806ac
Connecting to WiFi (24:6F:28:3:2:00)...

[austinscreations]

600mA can be on the low side of things, it's likely that at the peak of booting it might be experiencing a brief drop in voltage. which initial connection to wifi can do.

also that board has onboard usb with builtin USB-to-Serial converter. why use an external flasher?
and the 3v pin on the board isn't listed as an input but rather an output of the onboard regulator. which may also be causing issues

[ilium007]

It’s the Adafruit Huzzah32 Development board. No USB. I’ve also tried feeding the onboard 5v regulator from a bench top lab power supply.

[austinscreations]

my bad, didn't realize they sold one without usb.

my only thought would be a power issue. but you've indicated you've tried a bench power supply so i'm at a loss.

my best suggestion would be to join the superhouse discord and ask / post photos of your setup there and people there can likely help troubleshoot more.