@gohan I'm almost 100% sure they're clones, yeah. But they've been going for 2 days now across the range of my house (while in low power mode - no capacitor in place yet), so they'll do for prototyping.
Once I get to designing and printing boards, then I'll be a lot fussier
In addition to configuring MQTT publish/subscribe options for specific openHAB items, you can also define a generic configuration in the services/mqtt-eventbus.cfg file which will act on ALL status updates or commands on the openHAB event bus.
Yes. The messages are published if no client is connected.