SX1308 - GW platform for less that $100?

Gateways
55

I am using RAK831 and STM32F104 nucleo board

https://ja.aliexpress.com/store/product/LoRa-Gateway-Developer-Kit-RAK831-LoRa-LoRaWan-Module-with-Raspberry-base-on-SX1301-433-868-915MHz/2805180_32830271395.html

and here is my repo where STM can communicate with board, but I still have problems - or fails to start concentrator or does not receive messages.

https://github.com/goran-mahovlic/picoGW_mcu