Your old thread is here:
I think if you follow that (but without downloading anything - you should have all the correct files on your Mac still) then apart from changing the NodeID in the sketch to something different, and if you’re going to use the radio, making a matching - the same as your running V3.2 - entry in your empnPi’s emonhub.conf (Setup → Emonhub → Edit config) but change the Node (something like [[15]]) to the number you gave the sketch, it should work.