Luckfox Forums

Hi everyone,
I have just started using Luckfox Pico Ultra W board.
I am required to interface NEO6m GPS Module and a python script controlling a motor using node-Red.
I have set about 20 boards on test.
I have set the board running but have the following issues-

1. I want a clear confirmation on the correct way of powering the board.
on a few boards I have powered the board from USB C type port while USB is in device mode.
I want to change the power supply to POE module / external power supply header; this is a two pin header.
can someone please confirm if this is the correct way to power the board and also USB mode to be HOST OR DEVICE, does this setting have any effect on the board power source connection point and RNIDS availability?. I tried powering the boards on external power, with USB in device mode on three boards but after a few minutes the board started getting very hot.after this the board gets hot even when powered by USB the boards used to run very well before I powered them on external power header.
I confirm that the power supply connected was a regulated 5 Volts DC derived from a LM2596S chip.

2. I found a strange behaviour on few other boards, I had put them on test and they worked as expected, after three days I switched off the boards for a few hours and they did not boot again, SCO toolkit recognises them on MaskROM downloadBin OK, done. but when trying to flash firmware or erase I get the following error-Error Erase LBA failed, and on download- LBA failed can't read flash id from the device.on another board I get Begin is larger that flash size.

we Intend to deploy about 5000 boards in a project these issues are discouraging us, Please help.

hello，for information related to power supply, you can refer to the official wiki.https://wiki.luckfox.com/Luckfox-Pico-R ... ides-usb-c，Considering that the overheating issue might be caused by the simultaneous power supply from both power sources, using an external power supply, the USB connection must be disconnected. To switch to the Host mode via usb_config.sh, an external power supply is required. If the device mode is maintained, the USB connection needs to be disconnected.
Regarding the burning issue, "Erase LBA failed" might indicate that the flash has been damaged. It is recommended that you replace it and try again. "Begin larger than flash size" refers to a problem where the image file does not match the capacity of the Flash. We hope these suggestions will be helpful to you.

Hello yangxj121,
thanks for your prompt response, I would like to know if I use external power supply as mentioned in the wiki and use external usb device like pen drive with USB in host mode is recommended or not.

It's okay.，After powering on, ensure that it is in the host mode.Note: USB-A and USB-C cannot be used simultaneously.

Noted Thanks