Dozens!
(They also last longer than the premade stuff, including the fairly dumb zigbee devices. Though just grabbing some ZigBee sensors is soooo much easier than cleaning up and painting small 3d printed housings...)
Dozens!
(They also last longer than the premade stuff, including the fairly dumb zigbee devices. Though just grabbing some ZigBee sensors is soooo much easier than cleaning up and painting small 3d printed housings...)