# Is this possible

**URL:** <https://discourse.nodered.org/t/is-this-possible/45444>\
**Category:** General\
**Created:** [10 May 2021 19:48 UTC](https://discourse.nodered.org/t/is-this-possible/45444 "2021-05-10T19:48:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![timdr23](https://avatars.discourse-cdn.com/v4/letter/t/35a633/32.png) [@timdr23](https://discourse.nodered.org/u/timdr23)\
**Post date:** [10 May 2021 19:48 UTC](https://discourse.nodered.org/t/is-this-possible/45444/1 "2021-05-10T19:48:09Z")

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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

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**Author:** ![TotallyInformation](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/totallyinformation/32/31_2.png) [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Post date:** [10 May 2021 20:20 UTC](https://discourse.nodered.org/t/is-this-possible/45444/2 "2021-05-10T20:20:01Z")

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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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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [9 July 2021 20:20 UTC](https://discourse.nodered.org/t/is-this-possible/45444/3 "2021-07-09T20:20:09Z")

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