connection failed

[consolacion]

Sadly, the connection (ESP8266) kept failing. As your "API_Key" looks more like a channel ID than a key, I tried it with both a channel ID as well as with the API Read Key, but no prevail

[G6EJD]

The channel I use is public and others have been able to read and write to it. I'll have a look at what's going wrong if anything. Try putting some diagnostic prints in your code copy.

[consolacion]

Thanks. I have tried that channel, I tried a channel of my own, no luck. Just to make sure I loaded one of my own thingspeak (upload) programs.. that can connect without problems. Will put some diagnostics in it but the 'connection failed' is more or less the first diagnostic encountered :-)

Update: apparently I needed a bit more patience. After initial fail(s), it started to retrieve data after a while. Tnx

[G6EJD]

Strange, I have just re-programmed a new Wemos D1 Mini and it connects first time and the response was this: {"channel":{"id":320098,"name":"Test Channel","latitude":"0.0","longitude":"0.0","field1":"Pressure","field2":"Temperature","field3":"Humidity","created_at":"2017-08-21T13:22:12Z","updated_at":"2017-08-28T09:53:29Z","last_entry_id":85},"feeds":[{"created_at":"2017-08-26T22:15:06Z","entry_id":81,"field1":"40"},{"created_at":"2017-08-26T22:15:29Z","entry_id":82,"field1":"41"},{"created_at":"2017-08-26T22:15:52Z","entry_id":83,"field1":"42"},{"created_at":"2017-08-26T22:17:53Z","entry_id":84,"field1":"43"},{"created_at":"2017-08-26T22:18:16Z","entry_id":85,"field1":"44"}]}

Channel id: 320098 Name: Test Channel Readings last updated at: 2017-08-28T09:53:29Z Field1 entry number [81] had a value of: 40 Field1 entry number [82] had a value of: 41 Field1 entry number [83] had a value of: 42 Field1 entry number [84] had a value of: 43 Field1 entry number [85] had a value of: 44

You should be able to read your own channels noting of course your keys will be different and have you enabled Public access on your channels? When the ESP8266 connects the Thing speak server has no credentials to check other than channel number e.g. 820098

[G6EJD]

If I use a bogus key I get (expected) this: {"status":"404","error":"Not Found"}

Channel id: Name: Readings last updated at: Field1 entry number [] had a value of: Field1 entry number [] had a value of: Field1 entry number [] had a value of: Field1 entry number [] had a value of: Field1 entry number [] had a value of:

[consolacion]

Thanks, Well I can read yr and my own channel but it just doesnt happen on the first time. I standard get a 'connection failed' but if I wait I guess 1 or 2 times the 'delay(60000)' it eventually starts to read. using a Lolin board but that shldnt make any difference, so it works, just not on the first try

[G6EJD]

Interesting mine does work first time, can't understand why other than hardware differences. But I have been reading about subtle API changes and it suggests both API Read Key and Channel are required for Private channel reading, not for PUBLIC though, but it works either way, new code version upload with a #define to switch between partial (channel # only) and full (channel # and API Read key) request modes.

[consolacion]

odd indeed. I just tried on a Wemos D1 mini, just to be sure and had the same. It happens with your channel and with my public channel. Maybe just some setting in my LAN