Edit -
When I first tried this code I did initially get a response code of “0” and it wasn’t working. I found out this was because I was using the API key in my account settings area of Thingspeak instead of the API key for my specific channel. It was a simple mistake, but I thought I would share with others anyway.
End Edit -
@thingspeak thank you for posting this tutorial. I’m up and running and trying your service. It was easy! I will let you know what I think after a little testing.