As a newbe I already mastered some simple flows for combinatorical problems. My system is a energy storage system running Venus what comes with a preconfigured NodeRed. Although I am long term C and assembly programmer without any knowledge and experience using Javascript, I like to go on using No…

[image] Janvi: As a consequence, Node Red does not allow any graphical link to its own node. To escape from this limitation, the example shows inserted DummyFunctions inside both loops. Sorry, I don't understand this. You can certainly loop a node's output back to its input - what am I missin…

Many thanks for the hint with the junction node. I was not aware for this element up on now. Whatever it is doing and for whatever it is intended, it replaces my previous used fake-dummy functions. In correct position, graphic is not looking funky. Only distance between the lines could be more than…

Although I have reading all the postings, I've been busy with students to have contributed anything useful recently. [image] Janvi: I was not aware for this element up on now. I did actually show a loop using Link-Out and Link-In nodes fairly early on in this thread. [b5777bcbe9e0ca926397b…

Old version possibly happens by use of clipboard. Here again [{"id":"aacb7c81f89be079","type":"tab","label":"Blink FSM for timer test","disabled":false,"info":"","env":[]},{"id":"aab3194343b5f7ad","type":"junction","z":"aacb7c81f89be079","x":460,"y":200,"wires":[["7334cf2d08ec61be"]]},{"id":"92a849…

There was a mistake in line 27 of the blink FSM node. Obviosly JS is not complaining about reading variables never written nor defined but the runtime does not know about on how to handle this. - Anything crashed - its no more blinking

[image] Janvi: I am receiving this unexpected messages frequently from time to time without touching anything. Do you have 2 tabs with node-red (or another browser) open ? Then you get these conflicts.

Maybe accidently - I am going to take care for this. Going back to one of my earlier versions and come back later.

[image] Janvi: Obviosly JS is not complaining about reading variables never written nor defined If you dont declare a variable, the Monaco editor will let you know. [image] And after closing, the editor will apply a badge [image] [image] Janvi: but the runtime does not know about on …

[image] Janvi: ... the junction node .... replaces my previous used fake-dummy functions. Just to point out that while the editor(rightly) won't let you connect a node's output directly to it's input, it is perfectly happy if you use a junction or other node between and then ctrl-delete (del…

@jbudd very tricky, not anything intuitive but works perfect Back with a older version. At least this blinks reliable. [{"id":"aacb7c81f89be079","type":"tab","label":"Blink FSM for timer test","disabled":false,"info":"","env":[]},{"id":"11f4989c0dba9de8","type":"delay","z":"aacb7c81f89be079","name…

Node-RED

Node-RED Forum

Wanted: Simple state machine examples

General

dynamicdave 22 June 2025 16:29 51

Here's one of my old projects (18-months ago) that uses a FSM to control my garage door.

Topic		Replies	Views
State Machine - How to Compare Numbers? General node-red-dashboard , function-node	19	453	15 December 2022
Need help to use if function in Node Red Developing Nodes	13	1319	3 December 2020
Finite State Machine (FSM) with delay Share Your Projects	12	471	10 December 2024
[Announcement] node-red-contrib-xstate-machine - Flexible state-machines for node-red Share Your Nodes	24	2987	4 June 2020
Finite State Machine (FSM) - UK traffic lights Share Your Projects	1	1124	15 July 2018

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Wanted: Simple state machine examples

Related topics