One Button toggle to turn light on and off

Home Assistant and Node Red novice

I have a Ikea Styrbar controller and Ikea light bulb that I have configured in mqtt and this is working great.

Using Events:Status and Service Node (Toggle) I can toggle the light on and off but I see people using the MQTT nodes and can also see a lot more control over devices. (

So - I have setup a MTQQ in Node Red -

MTQQ IN - Message - Function (msg.payload = {"state": "ON"}) - MTQQ OUT (using SET after the topic name) and this is working great.

What I would like to do is press the same button to now turn off the light and I just can't see it

Searching for this seams to bring up all manor of stuff that I can't quite work out yet.

Can anyone point me in a general direction please.

(On a different matter, coming from Smartthings, I can't get over how quick this is)

Thanks

You will need to store the previous state so that you can send the opposite state.

Use context for this.

e.g.

chrome_dR7B1kkz48

[{"id":"83746a428adcbc17","type":"inject","z":"7eecf5f1d763605a","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":810,"y":432,"wires":[["056008d289d9ada1"]]},{"id":"056008d289d9ada1","type":"function","z":"7eecf5f1d763605a","name":"toggle on/off","func":"var state = context.get(\"state\") || false;\nstate = !state;\ncontext.set(\"state\", state);\nif (state) {\n    msg.payload = {payload: \"ON\"}\n} else {\n    msg.payload = { payload: \"OFF\" }\n}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":990,"y":432,"wires":[["52182669c4a415b7"]]},{"id":"52182669c4a415b7","type":"debug","z":"7eecf5f1d763605a","name":"payload","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1180,"y":432,"wires":[]}]
1 Like

Hello and welcome to the forum.

Here's a link to a worksheet I created for my IoT students. It shows how to create various buttons.

Having fun with buttons

2 Likes

Many thanks to both of you. I managed to work it out from the worksheet and its working.

I had to change the payload to payload.action and update the code as that what the Ikea button sends over.

Glad to hear you got it working so quickly.

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