Z-Wave devices are certified and you can't really "DIY" them because of this, so ZigBee it is. I chose the Digi XBee 3 module as my base because it's already compatible with ZigBee, runs ...
SimpleZigBee is an easy-to-use Arduino library for communicating with XBee Series 2 and 2B ZigBee radios. The library implements the most popular XBee API frame types (TX, RX, AT Command, etc.) and ...