Tech Note 054 - ESP Thingspeak Channel Data Reading

[GEJD]

*** To read Thingspeak data in JSON format you have to learn and understand JSON formats and how the data is structured!

[GEJD]

There appears to be some subtle API variances that suggests both API Read Key and Channel are required for Private channel reading, but not for PUBLIC though, but it works either way, so new code version uploaded with a #define to switch between partial (channel# only) and full (channel# and API Read key) request modes.

There is also a limited read rate, despite what TS says in its documentation, 15-secs for uploads and reads appear to be limited to 30-secs, so if you try too quick you get no response back from the server.

[Maslerbotics]

Thanks for your work, since there is no information on how to read the fields, I have tried the code but I find that if I read a field to which I have just sent data, the data read is correct, but if I send a data to another field, which I am reading results in "null". As if it only took the last data and if it does not match the one required to read, it can not be read.

[MPElectronique]

What about a private channel with an ESP32 ?
Thank You.
Marc.

[MPElectronique]

Did you try it use with ngork ? You can access your local webserver everywhere you are in the world! It is amazing :))

[MPElectronique]

You are DA man!!
Where did you learn all this ??

Thanks!
Marc.

[raghupathi]

Hii I want to send data from thingspeak to micro controller please suggest some methods .

[sachinkalburgi]

Hello. I'm trying to read two fields from thingspeak. I made the necessary changes in the code. But its showing only one field data. I can read both the fields separately, but I want it in one code. How to do that??? Please someone help.
Thank you, in advance.

[anhnguyentuan]

hello, i'm trying to read fields2 from thingspeak but unnecessary, please someone help

[Laohac]

hello, I'm trying to read 2 fields of tow different channel but unnecessary, please someone can help. tks so much.

[MPElectronique]

I got that :(
Host: api.thingspeak.com
Connection: close

i cannot see any results :(

[InnovateYourselfashu]

To learn the practical use and to read the uploaded data from thing speak using arduino and Nodemcu then go to the link :