Hi, this is my first post so please bear with me. I have a countdown timer on node red that now works perfectly, with buttons - play, pause, reset etc. I currently have this projecting to the dashboard, but I was hoping to get it wirelessly to a led display via mqtt and a wemos d1 mini or the like... is this possible? if so any good places to start? thanks
It certainly is possible. However, it may not be the best way.
Really it would be better to have the device do the countdown and have controls for stop/start/reset/set. They might simply be subscriptions to MQTT topics that triggered a suitable function.
Then in Node-RED, all you need to do is send the appropriate MQTT msg.
It is generally best to get the IoT device to do things like fine-grained timing as it will usually be more accurate and not dependent on the vagaries of your network and of things causing the node.js based Node-RED to hicup.
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