@Steve-Hadley said in Idiot newbie question: f I build a node using another nodemcu Hi @Steve-Hadley as @gohan said In your case (when using esp8266 based boards) your gateways are the nodes at the same time because they connect to the controller by themselves. Just edit your code to accommodate your sensor and you got easily deployable node anywhere where in your wi-fi coverage zone without additional gateways.