# Beginner problem: MQTT

**URL:** <https://discourse.nodered.org/t/beginner-problem-mqtt/54961>\
**Category:** General\
**Created:** [9 December 2021 20:54 UTC](https://discourse.nodered.org/t/beginner-problem-mqtt/54961 "2021-12-09T20:54:27Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jhunnx](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jhunnx/32/50946_2.png) [@jhunnx](https://discourse.nodered.org/u/jhunnx)\
**Post date:** [9 December 2021 20:54 UTC](https://discourse.nodered.org/t/beginner-problem-mqtt/54961/1 "2021-12-09T20:54:27Z")

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I have a iot project uses Arduino uno wifi rev2 along with mqtt protocol. The connection is working fine but when i tried to use the old modem(no internet connection) i have its just keep connecting but when i checked the modem my arduino is connected. Does it mean local transmission of data is not possible without internet?

My arduino connected to my old modem

 ![wew](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/1/415f8caf64e4ef19348ea0c7703592644ed8839a.png)

 ![wew1](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/0/d090d9acc27d6ecd492ec1ee58eb6bc55952c8de.png)

 ![wew2](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/4/c409005d65ffebac06a76f9ee788994fb5b8fca4.png)

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [9 December 2021 21:08 UTC](https://discourse.nodered.org/t/beginner-problem-mqtt/54961/3 "2021-12-09T21:08:51Z")

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Is it the wifi that is not connecting? If so then it is nothing to do with MQTT or node-red.

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**Author:** ![jhunnx](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jhunnx/32/50946_2.png) [@jhunnx](https://discourse.nodered.org/u/jhunnx)\
**Post date:** [9 December 2021 21:55 UTC](https://discourse.nodered.org/t/beginner-problem-mqtt/54961/4 "2021-12-09T21:55:47Z")

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Thanks. I changed to another modem seems like the other one broken. It came it working now but the value is not showing in debug anymore

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [9 December 2021 22:09 UTC](https://discourse.nodered.org/t/beginner-problem-mqtt/54961/5 "2021-12-09T22:09:12Z")

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Well, since we have no idea to what you are referring when you say the value is not showing, it is difficult to help.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [23 December 2021 22:09 UTC](https://discourse.nodered.org/t/beginner-problem-mqtt/54961/6 "2021-12-23T22:09:30Z")

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