# How can I make a led blink on the dashboard?

**URL:** <https://discourse.nodered.org/t/how-can-i-make-a-led-blink-on-the-dashboard/47881>\
**Category:** Dashboard\
**Created:** [1 July 2021 08:14 UTC](https://discourse.nodered.org/t/how-can-i-make-a-led-blink-on-the-dashboard/47881 "2021-07-01T08:14:27Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![Gunner](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gunner/32/43582_2.png) [@Gunner](https://discourse.nodered.org/u/Gunner)\
**Post date:** [2 July 2021 09:22 UTC](https://discourse.nodered.org/t/how-can-i-make-a-led-blink-on-the-dashboard/47881/7 "2021-07-02T09:22:12Z")

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> [@davidfigueroa](#):
>
> the closer to 105 it blinks faster until it is lit

After much fuss and hair pulling at my end... and a quick fix by @Steve-Mcl Here is an example that you should be able to adapt.

Exchange the slider's function (just sending a number representing milliseconds) with that of some code that sets increasing frequency ranges based on some other value as needed.

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/3/73897c9eecb5b74e1e101904a6e8ea9ef317c38c.png)

```auto
[{"id":"af1708dc.4e6ce8","type":"tab","label":"Flasher","disabled":false,"info":""},{"id":"1cd530d8.0510bf","type":"ui_led","z":"af1708dc.4e6ce8","order":2,"group":"85815d64.6c718","width":"2","height":"2","label":"","labelPlacement":"left","labelAlignment":"left","colorForValue":[{"color":"#0000ff","value":"true","valueType":"bool"},{"color":"#000000","value":"false","valueType":"bool"}],"allowColorForValueInMessage":false,"shape":"circle","showGlow":true,"name":"","x":570,"y":320,"wires":[]},{"id":"efde91d9.e81c1","type":"toggle","z":"af1708dc.4e6ce8","name":"","onOffTopic":"","onValue":"true","onType":"bool","offValue":"false","offType":"bool","toggleTopic":"","toggleValue":"togglenow","toggleType":"str","passOnOff":"ifChanged","x":570,"y":260,"wires":[["1cd530d8.0510bf"]]},{"id":"95c7325.18127d","type":"ui_slider","z":"af1708dc.4e6ce8","name":"Frequency","label":"slider","tooltip":"","group":"85815d64.6c718","order":0,"width":0,"height":0,"passthru":false,"outs":"end","topic":"delay","topicType":"msg","min":"32","max":"2000","step":1,"x":150,"y":320,"wires":[["97729620.9d6d08"]]},{"id":"c6b10cae.c126a","type":"trigger","z":"af1708dc.4e6ce8","name":"Trigger","op1":"togglenow","op2":"false","op1type":"str","op2type":"bool","duration":"-250","extend":false,"overrideDelay":true,"units":"ms","reset":"reset","bytopic":"all","topic":"topic","outputs":1,"x":360,"y":260,"wires":[["efde91d9.e81c1"]]},{"id":"bafe11a7.88056","type":"ui_button","z":"af1708dc.4e6ce8","name":"","group":"85815d64.6c718","order":2,"width":0,"height":0,"passthru":false,"label":"Reset","tooltip":"","color":"","bgcolor":"","icon":"","payload":"reset","payloadType":"str","topic":"reset","topicType":"msg","x":150,"y":280,"wires":[["c6b10cae.c126a"]]},{"id":"97729620.9d6d08","type":"change","z":"af1708dc.4e6ce8","name":"Magic beans ;)","rules":[{"t":"set","p":"delay","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":360,"y":320,"wires":[["c6b10cae.c126a"]]},{"id":"85815d64.6c718","type":"ui_group","name":"","tab":"bb7236c.d277cc8","order":2,"disp":true,"width":"6","collapse":false},{"id":"bb7236c.d277cc8","type":"ui_tab","name":"Flashing LED","icon":"dashboard","disabled":false,"hidden":false}]

```

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