With Raspberry pi 3 model b:
I run this tutorial and when I try to control the LED from the web page my widget say "Unreachable". https://imgur.com/a/XfrqO
Sorry for my poor english, but i’m italien.
@mrcsollo welcome to cayenne community. you may be running on 4.9 kernel. but this bug was solved. @rsiegel tagging for this. till then try this:
Were you able to add LED? Would also be helpful to send picture of your setup.