MathewHDYT

Okay it seems like the subscribing does indeed work. So you can remove the code you added from the loop method so you don't spam the console. Would it perhaps...

Thanks a lot as it seems the subscription and callback both work. So I don't have an idea what could theoretically cause the problem at the moment. I will try...

I've compiled your code on a device on my end and it seems I can reproduce the issue, everything works besides RPC. So I'm 100% sure it's a software issue,...

I've tried a bare-bones script, and it seems to work with that atleast, would be nice if you could try it too and see if RPC works if the ThingsBoard...

Okay I have found the issue after trying to integrate some things from the ThingsBoard library in the bare bones example. The problem was the maximum size that `PubSubClient` has,...

Thanks a lot if you could close the issue that would be highly appreciated, as the problem has been resolved.

If you have a look at [Example_0002](https://github.com/thingsboard/thingsboard-arduino-sdk/blob/master/examples/0002-arduino_rpc/0002-arduino_rpc.ino), you should see a small working example on how to use the Arduino ThingsBoard SDK to subscribe to RPC. I'm assuming you used...

@imbeacon I think this issue can be closed, as well the examples work and are a good basis to start using the library.

@per1234 Would be very nice if this could be merged the additional information that was added helped resolve my issue, when trying to build only specific examples from the folder.

It is not possible to request all keys, at least to my knowledge. But this limitation is not from this library, but instead the ThingsBoard API. [See the official MQTT...