I have a Nano Every and after connecting everything except for the sensor all the pins are occupied except for the AREF, RX and TX pins which i obviously cannot use. I was hoping to use the nano only for the entire project as it is small and compact but the lack of ports was the issue. I am going to add a few more components to my system which will require maybe 5 more digital outputs and 3 more analog inputs so Mega 2560 was the best choice.