# Node red wake on lan node

**URL:** <https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473>\
**Category:** General\
**Created:** [4 December 2018 10:55 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473 "2018-12-04T10:55:58Z")\
**Posts on this page:** 11\
**Page:** 1

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**Author:** ![Samuel](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Post date:** [4 December 2018 10:55 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/1 "2018-12-04T10:55:58Z")

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Hi guys, I wanted to use node red to do wol on my local pc, so I have installed wol node, all works but! After some time, let's say an hour or so, after my pc got switched off, my wol flow will stop working and it won't wake up my pc. This is really strange as my pc can still bo woken up from my mobile.

It looks like nodered would go to sleep but its not because I'm running 24hr dashboard on it and it works but wol doesn't.

Could you share any ideas where to look for to get it fixed?

Thank you

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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:** [4 December 2018 12:37 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/2 "2018-12-04T12:37:17Z")

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We would need to know more. sharing your flow would be a good place to start.

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**Author:** ![Samuel](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Post date:** [4 December 2018 21:44 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/3 "2018-12-04T21:44:37Z")

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hi, sure, flow attached:

```
[{"id":"d821681.ed8f898","type":"switch","z":"2ece73b8.ff014c","name":"","property":"payload","propertyType":"msg","rules":[{"t":"false"},{"t":"neq","v":"false","vt":"str"}],"checkall":"false","repair":false,"outputs":2,"x":270,"y":640,"wires":[["584eed57.1b7a84"],["1f697c1c.7f3674"]]},{"id":"584eed57.1b7a84","type":"change","z":"2ece73b8.ff014c","name":"ping false/off","rules":[{"t":"set","p":"colour","pt":"msg","to":"#FF5500","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":450,"y":580,"wires":[["afdab7ff.68de98"]]},{"id":"1f697c1c.7f3674","type":"change","z":"2ece73b8.ff014c","name":"ping success/on","rules":[{"t":"set","p":"colour","pt":"msg","to":"lime","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":440,"y":700,"wires":[["afdab7ff.68de98"]]},{"id":"651e877b.f8fc38","type":"ping","z":"2ece73b8.ff014c","name":"pc check","host":"192.168.0.127","timer":"15","x":100,"y":640,"wires":[["d821681.ed8f898"]]},{"id":"afdab7ff.68de98","type":"ui_button","z":"2ece73b8.ff014c","name":"wol","group":"83999c6c.55fb9","order":2,"width":"2","height":"1","passthru":false,"label":"","color":"{{msg.colour}}","bgcolor":"","icon":"fa-desktop fa-2x","payload":"","payloadType":"date","topic":"","x":470,"y":640,"wires":[["78b3e098.207b"]]},{"id":"78b3e098.207b","type":"wake on lan","z":"2ece73b8.ff014c","mac":"D8:CB:8A:86:5F:9D","host":"192.168.0.127","name":"M73 WOL","x":660,"y":640,"wires":[]},{"id":"83999c6c.55fb9","type":"ui_group","z":0,"name":"Misc","tab":"d19fc407.ce3038","disp":false,"width":"4","collapse":false},{"id":"d19fc407.ce3038","type":"ui_tab","z":"","name":"SALON","icon":"fa-couch"}]
```

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<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [5 December 2018 08:38 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/4 "2018-12-05T08:38:04Z")

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Hang a debug off the button output to check you are getting what you think you are wanting.  
Most dashboard nodes don't pass on values if they haven't changed so maybe this is what you are seeing.

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**Author:** ![Samuel](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Post date:** [5 December 2018 08:54 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/5 "2018-12-05T08:54:09Z")

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Hi there, thank you, after pressing the button a timestamp is being  
sent, and that works when computer has been turned off for around  
minute or two. When PC is off for longer then WOL doesn't work from  
node-red BUT works from wol app that I have on my phone.  
It's just strange that after that some time has lapsed WOL won't work.

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<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [5 December 2018 09:07 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/6 "2018-12-05T09:07:05Z")

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and does the dashboard send the timestamp after that longer period when you press the button ?  
Where is Node-RED running ?  
(Hopefully not on the machine that has been sent to sleep.... 🙂

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<div class="post-metadata">

**Author:** ![Samuel](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Post date:** [5 December 2018 09:20 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/7 "2018-12-05T09:20:21Z")

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Ah, this is very good question! I have not checked if that timestamp  
still goes out after pressing the button, so I will hook something up  
to check that. But on the other thought, if other buttons work and are  
programmed to send timestamps, why wouldn't this one?

I run node-red on raspi3 - 100% not the machine that I want to wake up  
😃 haha thanks for that 😉

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<div class="post-metadata">

**Author:** ![Samuel](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Post date:** [6 December 2018 08:45 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/8 "2018-12-06T08:45:24Z")

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Ok, tried it overnight and button still does work but wol doesn't, it does from other device though. I will raise issue in github with the creator of wol node. Thank you

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<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [6 December 2018 12:43 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/9 "2018-12-06T12:43:00Z")

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so after the night you press the button and the debug says it works ? and the wol packet never gets sent. ?

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<div class="post-metadata">

**Author:** ![Samuel](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Post date:** [6 December 2018 12:54 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/10 "2018-12-06T12:54:59Z")

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Hi there, yes - that is exactly what happens. And just to confirm - I  
then took my phone out, fired WOL app and sent magic packet and it  
worked instantly.

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<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [6 December 2018 15:56 UTC](https://discourse.nodered.org/t/node-red-wake-on-lan-node/5473/11 "2018-12-06T15:56:23Z")

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Continued over on Issues list

> <https://github.com/node-red/node-red-nodes/issues/508>