Switch node to toggle light switch on/off

[dynamicdave]

Here's a link to a thread about buttons you might find useful...

One Button toggle to turn light on and off

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","fu…

Here's the link to the tutorial I wrote for my IoT students about implementing different types of buttons...
http://www.resources-area.co.uk/node-red-flows/having_fun_with_buttons.pdf