RAK7204 Not able to use

Hi, I just received a RAK 7204 environmental node and is exciting to powered it up

However, after connecting the battery connector to the board, the board only flash a blue LED then nothing happen.

It also cannot be detected by RAK 7258 indoor gateway.

Please advice. TQ!

Hi @ckchun,

Can you please connect RAK7204 with your PC, and get the log output of serial port, then send the log to me?

I follow your suggestion, I boot the RAK7204 with USB and connect it with serial tools. I also press the reset button on the side of the device but nothings shows on the serial tool.

Hi @ckchun,

Is it the correct COM for the connection of RAK7204 and your PC?
If it is correct, i think maybe the firmware or bootloader of your RAK7204 device is not correct. Maybe there are some work fault in our side…
You can please flash the bootloader and the firmware one by one for your RAK7204 according to our document:
https://doc.rakwireless.com/rak7204-lora-environmental-sensor/burning-the-bootloader
https://doc.rakwireless.com/rak7204-lora-environmental-sensor/burning-the-firmware

The latest bootloader and firmware can be downloaded from here:
https://downloads.rakwireless.com/en/LoRa/RAK7204/Firmware/

Hi Fomi,

I had jumped the VDD and Boot PIN on the device and try connect with ST32 software but I get this error while I try to connect:

“Error: Activating device: KO. Please, verify the boot mode configuration and check the serial port configuration. Reset your device then try again…”

Please advice. TQ!

Regards,

CK

Hi @ckchun,

Have you jumped the board as this?

If you have, i think maybe you forgot to push the reset button.

Hi Fomi,

I put the jumper as below, I also press the reset but to confirm the reset button is as below?

However, the error is the same

The green jumper seems strange, so i think maybe you can change another jumper and try again.
For this case, we use a jumper to connect VDD with BOOT pin togather.

BTW, that is the reset button.

Hi Fomi,

I changed a few different jumper but the result is the same.

You’d better use a wire to connect the VDD to boot and reset the device to see if the result is different.

Hi @ckchun
Can you please change the micro USB cable? Do you here a new device found sound when plug in the micro USB? Can you check that only this com port is available in device manager?
Regards,
Todor

Hi Velev,

When I plug in the usb cable to the RAK7204, I do hear a new device found sound and it is the inly COM in the device manager.

Regards,

CK