Hello @codewitch

have you tried keeping it plugged in for a while to charge the battery? have you tried to run it w/o battery, e.g. with the M5GO bottom removed?

Thanks
Felix

@ajb2k3 thank you!

Is the ENV III plugged into the red port?

@ajb2k3 No it's not a Grove pin.
Check here:
https://github.com/m5stack/m5-docs/blob/master/docs/en/core/fire.md

Right, OK, nobody panic!
There is a bug somewhere that causes a random boot loop to appear in the ESP32 and strangely I had this with a Stamp the other weekend.
Disconnect everything and leave the controllers unconnected for a while, cold boot the computer and try and flash UIFLow firmware.

Hello
had the same problem.
Solution with me, Use an older 5V USB power supply.
The new ones switch off due to insufficient power consumption.
Motorola review 2020
low A. = off
Samsung
v. 2015
no problem.
Try old power supplies without high-performance charge control.

73/ Klaus

Hey robalstona,

Thanks for your answer. You are right this could be the problem. I will try it out in the near future.

cheers,
Mathias

Solved

comment M5stack.h:

//#include <M5Stack.h>
#define M5STACK_MPU6886

thx

Hello @anichang

just wondering - maybe the issue isn't specific to PSRAM but with the power supply? I'd try a different power supply and/or shorter USB cable.

Thanks
Felix

1st thing to do is DON'T Panic!
Next remove the base and module leaving only the firecore.
Plug a usb cable in and connect just the core section into a computer, go into hardware reports and check usb devices.
Do you have a USB to UART adapter?
Try the instructions on this page to use an external adapter
https://docs.m5stack.com/#/en/tool/usb_downloader?id=esp32-downloader

@uniko92

Firmware on the Fire is really old. Please use M5Burner to upgrade it to 1.7.4.

@m5stack , @ajb2k3 sorry but any ideas?

@carles-b
Great. Glad you got it sorted out and can begin enjoying M5Stack 😀

@sodoku Thanks a lot. That solved my problem. Seems my Core came with a very old software image. In the M5Flow Menu there's a very helpful video on how to flash. It took me 10 minutes and now I'm having fun with my core.

Oh - interesting !
If it's for battery, then I think a 3,7 V akku will work - the same they are using in the moduls.

Thank you.
K.D.

@adcse

Just program it with WiFi or USB and then set up the BLE connection within the Blynk app (via the BLE widget). The configuration (hardware device to app) for Blynk within uiFlow is only BLE (i.e. no option for WiFi), so it's not relevant for the actual programming of your M5Stack Fire via WiFi or USB.