# \#node-red-mcu

**URL:** https://discourse.nodered.org/tag/node-red-mcu/75.md

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## [Developing LLM Plugin and I demo in Japanese LT event!](https://discourse.nodered.org/t/developing-llm-plugin-and-i-demo-in-japanese-lt-event/101148)

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**Author:** [@404background](https://discourse.nodered.org/u/404background)\
**Replies:** 0\
**Last updated:** [28 May 2026 08:31 UTC](https://discourse.nodered.org/t/developing-llm-plugin-and-i-demo-in-japanese-lt-event/101148 "2026-05-28T08:31:04Z")

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Hi everyone, This is my first time posting on this forum. I am currently developing "LLM plugin for Node-RED" (node-red-contrib-llm-plugin) and would like to share it with this community. I recently demoed this projec…

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## [ESP-32 OTA updates via node-red-mcu?](https://discourse.nodered.org/t/esp-32-ota-updates-via-node-red-mcu/83837)

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**Author:** [@shrickus](https://discourse.nodered.org/u/shrickus)\
**Replies:** 19\
**Last updated:** [9 January 2024 19:53 UTC](https://discourse.nodered.org/t/esp-32-ota-updates-via-node-red-mcu/83837 "2024-01-09T19:53:06Z")

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Now that I finally have a working ESP-32 mcu connected to my pool controller, I have to disconnect it and bring it inside every time I want to make the slightest changes to the flow. I found this statement from Peter e…

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## [Try Serial Communication with Function Node in Node-RED MCU](https://discourse.nodered.org/t/try-serial-communication-with-function-node-in-node-red-mcu/84193)

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**Author:** [@mshioji](https://discourse.nodered.org/u/mshioji)\
**Replies:** 6\
**Last updated:** [4 January 2024 15:34 UTC](https://discourse.nodered.org/t/try-serial-communication-with-function-node-in-node-red-mcu/84193 "2024-01-04T15:34:34Z")

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Hello, I'm new here. Recently I wrote an article in Qiita.com then @phoddie encouraged me to share it for this forum. here is the English version of the article, hope someone enjoy it. (press :heart: if you like it. …

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## [Tutorial - Read a sensor by running a Node-RED flow on an ESP32 via node-red-mcu](https://discourse.nodered.org/t/tutorial-read-a-sensor-by-running-a-node-red-flow-on-an-esp32-via-node-red-mcu/77171)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 11\
**Last updated:** [20 December 2023 07:35 UTC](https://discourse.nodered.org/t/tutorial-read-a-sensor-by-running-a-node-red-flow-on-an-esp32-via-node-red-mcu/77171 "2023-12-20T07:35:21Z")

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Hi folks, With a lot of help from @phoddie and @ralphwetzel, I managed at last to measure distances from a HC-SR04 sensor by running node-red-mcu on my WT32-ETH01 board. So the least I could do is write down how we did…

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## [Node-RED MCU - unhandled exceptions causing endless loop?](https://discourse.nodered.org/t/node-red-mcu-unhandled-exceptions-causing-endless-loop/83044)

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**Author:** [@shrickus](https://discourse.nodered.org/u/shrickus)\
**Replies:** 7\
**Last updated:** [28 November 2023 19:23 UTC](https://discourse.nodered.org/t/node-red-mcu-unhandled-exceptions-causing-endless-loop/83044 "2023-11-28T19:23:10Z")

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Not sure if this is an issue inside moddable or node-red-mcu, but anytime the generated node-red flows running on my ESP-32 hit an error, the whole unit restarts... and fails again. In my particular flow, I just added a…

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## [MCU plugin tooling works from a shell, but not from the plugin sidebar](https://discourse.nodered.org/t/mcu-plugin-tooling-works-from-a-shell-but-not-from-the-plugin-sidebar/82457)

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**Author:** [@shrickus](https://discourse.nodered.org/u/shrickus)\
**Replies:** 17\
**Last updated:** [19 November 2023 22:00 UTC](https://discourse.nodered.org/t/mcu-plugin-tooling-works-from-a-shell-but-not-from-the-plugin-sidebar/82457 "2023-11-19T22:00:07Z")

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I have been following along with great interest as @phoddie and @ralphwetzel develop bridges between Node-RED flows and MCU programming -- one of the most exciting new areas for me to extend my smart-home skills. As som…

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## [How to create a hidden node property](https://discourse.nodered.org/t/how-to-create-a-hidden-node-property/76934)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 13\
**Last updated:** [28 March 2023 11:36 UTC](https://discourse.nodered.org/t/how-to-create-a-hidden-node-property/76934 "2023-03-28T11:36:08Z")

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I am trying to create a hidden node property ("moddable\_manifest") in a contrib node, in order to provide a property in the nodes exported JSON, where the JSON should be something like { "id": "39f01371482a60fb", …