had a slowday and i had a look around your sketch i got my thingspeech channel running with no hassle :O
will be adding more sensors as i go
at the moment ..simple dallas temp sensor and the ob photocell on the esp8266mod dev board..
https://thingspeak.com/channels/51779


andy

hello .. i have been playing around with the esp01 all the way up to esp-12 nodemcu0.95,esp8266mod dev kits for a while .. im not a great coder i left that behind in the 80's :O. but i have to say this is one good bit of work ..i like the basic and clean interface how easy it is to set gpio pins i2c...