This is how I did the linkys using Amazon Alexa and google IFTTT for my project on here
Firstly make sure the IP address works in your browser
0 turns off - A 1 turns pin on
So in this example I am controlling virtual pin V43 which is the soffit light button on my blynk app - clearly make sure your button on the blynk app works first!!!
This is the IFTTT Applet to go with it
So I use the phrase ‘soffit lights on’ then a webhook to the public IP then your token and pin as shown
the method is ‘PUT’
COntent type is application/JSON
and the body is [“1”] so this turns
then you creat another applett to turn off ie changing trigger wording and put a 0 in the body.
Dont forget to save your applett and make sure it is turned on.
I also do this with a slider and alexa for a lounge dimmer just have an applet for 10, 20, 30 and so on. Then when you say trigger lounge 30 ie get 30% power - simples!!! and you see the slider move on the app.
Cheers
kev