There is Rflink device based on Arduino Mega and 433MHz receiver. Inside of Arduino is RFlink´s special FW.
In this state Arduino uses only single input for receiveing of 433MHz data and sends them to HA (Raspberry) via USB…
Is it possible to use all other Arduino GPIO´s and send data received by them to HA vis USB?
http://www.rflink.nl/blog2/faq#GPIO this shows how to use GPIO with RFLink, but I did not understand yet how to have home assistant control this (how to configure it as a switch or cover in home assistant) any idea ?