Hi,
I have bough the RAK2287 USB version with GPS. According to the documentation it needs to be an STM32L4 chip to communicate with sx1302 chip. However, I cannot able to see it? I am wondering whether the product is misshipped. I also have RAK5148 USB version and I can able to see the STM32F4 chip back of the module.
I am sending the pictures of it below. Thank you.
Hello @Bugra ,
According to the SN, the concentrator is USB with a GPS variant.
Do you mean you can not physically see the STM32L4 chip?
If so this is because the STM chip is placed under the radiator and the RF shield with the SX1302.
RAK5146 has a different design.
Regards,
Nikola Semov