Hi @dalibor.kuhinek, thank you for your interest in Cayenne and welcome to the community!
I don’t have this board at my desk to test this out first hand, but I see that it is running integrated ESP8266 for its WiFi connectivity. Until we have official support in the UI, I strongly encourage you to look at the ESP8266 threads we have here, especially this one where users have been able to connect this device to the platform:
@kreggly in that thread had success connecting it in his June 26th post and shared a How-To. If you get stuck we’ll do our best to help you out in any troubleshooting.
I’ve added official support for this board to the Cayenne Roadmap for future development.