# Help with controlling relay board by using node-RED

**URL:** <https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807>\
**Category:** General\
**Created:** [28 December 2021 20:52 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807 "2021-12-28T20:52:15Z")\
**Posts on this page:** 17\
**Page:** 1

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 20:52 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/1 "2021-12-28T20:52:15Z")

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hello. I'm looking for help with this error:

## Welcome to the Node-RED Dashboard

Please add some UI nodes to your flow and redeploy

I have noticed a common problem with this....  
28 Dec 22:19:48 - [info] Node-RED version: v2.1.4  
28 Dec 22:19:48 - [info] Node.js version: v14.18.2  
28 Dec 22:19:48 - [info] Linux 5.10.63-v7l+ arm LE  
28 Dec 22:19:49 - [info] Loading palette nodes  
28 Dec 22:19:52 - [info] Dashboard version 3.1.2 started at /ui  
28 Dec 22:19:52 - [info] Settings file : /home/pi/.node-red/settings.js  
28 Dec 22:19:52 - [info] Context store : 'default' [module=memory]  
28 Dec 22:19:52 - [info] User directory : /home/pi/.node-red  
28 Dec 22:19:52 - [warn] Projects disabled : editorTheme.projects.enabled=false  
28 Dec 22:19:52 - [info] Flows file : /home/pi/.node-red/flows.json  
28 Dec 22:19:52 - [warn]

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [28 December 2021 21:03 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/2 "2021-12-28T21:03:47Z")

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What error?  
I'm not seeing any error messages.  
What is causing you concern?

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:05 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/3 "2021-12-28T21:05:47Z")

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Dashboard ui not working

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [28 December 2021 21:07 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/4 "2021-12-28T21:07:59Z")

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Have you added any dashboard nodes, such as a button or switch?  
If not, there will be nothing to display.

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:14 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/5 "2021-12-28T21:14:39Z")

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not. only inject and rpi-gpio out node..

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:16 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/6 "2021-12-28T21:16:08Z")

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![20211228_231406](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/f/dfc8ebfd462eefe6a87b89fef91bac12a897870e.jpeg)  
 ![20211228_231359](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/2/a/2af127cc1315a184433b7d09b5faff58291d6e0d.jpeg)

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [28 December 2021 21:16 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/7 "2021-12-28T21:16:21Z")

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Well that's why your dashboard isn't working.  
Try adding some.

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:22 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/8 "2021-12-28T21:22:13Z")

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![20211228_232038](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/0/f/0fcbb3e2cfddaf16975741138f96a85fd612ec51.jpeg)

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [28 December 2021 21:23 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/9 "2021-12-28T21:23:10Z")

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The photos are not helping!

You need to add one or more nodes from the dashboard set of nodes, otherwise there is nothing to display.  
Also read the [dashboard instructions](https://flows.nodered.org/node/node-red-dashboard).

![dash](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/0/f01ea7f5016775faa3c6c02e44d73fa06c1476d4.jpeg)

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:23 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/10 "2021-12-28T21:23:51Z")

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can you teach me to do it?

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:27 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/11 "2021-12-28T21:27:31Z")

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I apologize if I speak incomprehensibly...i want to learn to work with raspbery.. 🙂

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<div class="post-metadata">

**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:32 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/12 "2021-12-28T21:32:53Z")

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thanks for trying to help

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [28 December 2021 21:32 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/13 "2021-12-28T21:32:56Z")

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You must describe in much more detail, what you are trying to achieve, and what is not working.  
Otherwise it's difficult to help you.

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**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 21:57 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/14 "2021-12-28T21:57:41Z")

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my purpose is these relays. I want to manage them remotely  
[RPi Relay Board (B) - Waveshare Wiki](http://www.waveshare.com/wiki/RPi_Relay_Board_(B))

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [28 December 2021 22:02 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/15 "2021-12-28T22:02:54Z")

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Well the topic title is currently `ERROR: Welcome to the Node-RED Dashboard Please add some UI nodes to your flow and redeploy` which does not describe your problem.

I'll change it to something more suitable and then someone will hopefully be able to help you

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<div class="post-metadata">

**Author:** ![marius](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@marius](https://discourse.nodered.org/u/marius)\
**Post date:** [28 December 2021 22:16 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/16 "2021-12-28T22:16:27Z")

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i added a switch and everything works. Thank you very much

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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:** [11 January 2022 22:16 UTC](https://discourse.nodered.org/t/help-with-controlling-relay-board-by-using-node-red/55807/17 "2022-01-11T22:16:41Z")

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