Reading values from thingspeak website

Hello, I want enter values from thingspeak website to my Arduino Uno, which is connected with ESP8266 module. As I am very new this, I do not know how to do this, if anybody give any suggestion that will be a great help and one more thing I want to know is maximum how many number of channel can be open per account in thingspeak website for free?

Answer 1

[Vinod]

Please refer to this page and the FAQ for information on the different license types and the capacity of each license type. Also, please refer to the documentation, specifically the "Read data from a channel" section and examples showing the use of the ThingSpeak library with Arduino and ESP8266.

[Muthumani Saravanan]

Hi Vinod,

I tried to read data from my channel through MQTT.fx - 1.7.1 software. When ever i tried to subscribe my channel getting the below message "Broker Connetion Lost: Resetting Client."

In documentation (Subscribe to a Channel Field Feed) its clearly saying that "Invalid subscription details such as API Key, channel number, or MQTT User API Key result in the client being disconnected.". But i have provided correct channel number (FYI... "channels/1051630/subscribe/fields/field1"). But still im not able to subscribe to the channel. But able to Publish to another channel with the following message "channels/1054081/publish/fields/field1/DTX2NXXXXXXXXXXTSSYU".

Please guide me how to proceed further.

Log message after connection lost,

2020-05-06 21:24:09,554 INFO --- SubscribeController : onSubscribe

2020-05-06 21:24:09,831 INFO --- MqttFX ClientModel : rebuildMessagesList()

2020-05-06 21:24:09,831 INFO --- MqttFX ClientModel : attempt to addRecentSubscriptionTopic

2020-05-06 21:24:09,832 INFO --- MqttFX ClientModel : addRecentSubscriptionTopic : de.jensd.mqttfx.entities.Topic@6948e2

2020-05-06 21:24:09,832 INFO --- MqttFX ClientModel : attempt to add PublishTopic

2020-05-06 21:24:09,862 INFO --- MqttFX ClientModel : sucessfully subscribed to topic channels/1051630/subscribe/fields/field1 (QoS 0)

2020-05-06 21:24:09,865 INFO --- MqttFX ClientModel : Broker connection lost: Resetting client.

2020-05-06 21:24:09,921 INFO --- ScriptsController : Clear console.

2020-05-06 21:24:09,922 INFO --- MqttFX ClientModel : rebuildMessagesList()

2020-05-06 21:24:09,929 INFO --- ScriptsController : Clear console.

[Vinod]

Muthumani: How many concurrent MQTT subscriptions do you have?