I am using a free license for publishing data with MQTT on ThingSpeak which works very good, according to the format: channels/ /publish/fields/field . Can I subscribe my channel(s) with MQTT with a free license with the format: channels/ /subscribe/fields/field . Or is there any restriction? Thanks for your answer and best regards.

Can I subscribe my channel(s) with MQTT with a free license?

6 次查看（过去 30 天）

显示更早的评论

Johan Vervaet 2021-12-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1600624-can-i-subscribe-my-channel-s-with-mqtt-with-a-free-license

评论： Johan Vervaet 2022-2-6

I am using a free license for publishing data with MQTT on ThingSpeak which works very good,

according to the format: channels/<channelID>/publish/fields/field<fieldnumber>.

Can I subscribe my channel(s) with MQTT with a free license with the format:

channels/<channelID>/subscribe/fields/field<fieldnumber>.

Or is there any restriction?

Thanks for your answer and best regards.

2 个评论
显示无隐藏无

Fred Ettner 2022-2-6

Johan, I'm trying unsuccesfuly to do the same. What micropython MQTT library areyou using?

Johan Vervaet 2022-2-6

Hello Fred,

I have tried the following even on different micropython versions on ESP32:

1) import upip, upip.install('micropython-umqtt.simple'), upip.install('micropython-umqtt.robust'), or

2) import upip, upip.install('micropython-umqtt.simple2'), upip.install('micropython-umqtt.robust2').

Unfortunately unsuccessfull with the subscribe format channels/<channelID>/subscribe/fields/field<fieldnumber>.

Regards.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Vinod 2021-12-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1600624-can-i-subscribe-my-channel-s-with-mqtt-with-a-free-license#answer_865950

Yes. Even a free license enables you to publish and subscribe to ThingSpeak channels. Note that you may still only publish to a channel once every 15 seconds with a free license.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Johan Vervaet 2022-1-3

Hello Vinod,

I appreciate your answer very much, but unfortunately I am not using ESP8266 on arduino.

I am using ESP32 on Thonny IDE with micropython: do you have any information for that environment?

Thanks and best regards.

Vinod 2022-1-3

I'm not familiar with that environment, unfortunately. Have you tried subscribing to your channel using a desktop client like mqttx and publishing data to it?

请先登录，再进行评论。

请先登录，再回答此问题。

社区

更多回答在 ThingSpeak Community

类别

Test and Measurement ThingSpeak

在 Help Center 和 File Exchange 中查找有关 ThingSpeak 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by