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Forum Node-Red Reading output values
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Related

Node-Red Reading output values

jasonwier92
jasonwier92 over 8 years ago

Okay, as I am testing, I am noticing that you cannot read the status of an output node. take the following examples:  this controls the relay just fine, sometimes it is a little touchy, but for the most part it works.  But then I monitor the same input triggered on rising and falling edges and I get no output.  I think it is because it is already setup as an output. With Node or Python, you can see what state the output pin is in and that is what I would like to do. I could do it with an output from the WS or MQTT message or the function and even store the state and on a new connection dump out all the values. Problem is when Node-red restarts the states are un-known. The one idea I had was to store this the state in a persistent data storage, like a database.  Only issue I see with that is it could get stale. Maybe I changed it via a command line.  I think it is best to ask the pin what state it is in.

 

To the ones running Node-Red for their project, what do you all think?

 

image

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  • mcb1
    mcb1 over 8 years ago +1
    Not sure if this helps. https://flows.nodered.org/node/node-red-contrib-influxdb Seems writing to a database might be the only way to keep it after a restart. Ran across this which outlines lots of uses…
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  • mcb1
    mcb1 over 8 years ago

    Not sure if this helps.

    https://flows.nodered.org/node/node-red-contrib-influxdb

     

    Seems writing to a database might be the only way to keep it after a restart.

     

     

    Ran across this which outlines lots of uses I'd never thought of.

    Might need to get my current project out the way and get stuck into NodeRed.....

    Node RED Programming Guide – Programming the IoT

     

     

    Mark

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  • mcb1
    mcb1 over 8 years ago

    Not sure if this helps.

    https://flows.nodered.org/node/node-red-contrib-influxdb

     

    Seems writing to a database might be the only way to keep it after a restart.

     

     

    Ran across this which outlines lots of uses I'd never thought of.

    Might need to get my current project out the way and get stuck into NodeRed.....

    Node RED Programming Guide – Programming the IoT

     

     

    Mark

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