Hello there! I wrote a Scipt in python to read data from a sensor which is connected via usb to my raspberry pi 4B. Is it possible to convert this skript into a .json file and import it into node red to get the readed data into the debug node or into the dashboard ? Thanks.

What line in your code - that is not commented out - do you define it? Maybe you want msg.IAQ_pm2??

I just want one thing. as you can so i recieve in the debug "value control" to numbers. one is called "IAQ_pm2" and the other one is "IAQ_pm10". I just want that always the higher number gets returned. So in this case below, I want that the debug "extracontrol" shows the number "3", because its the …

Math.max takes a list of parameters, not an array. Get rid of the square brackets. var max = Math.max(var1, var2)

I tried this. What am I doing wrong? [Screenshot 2021-05-18 172055] [Screenshot 2021-05-18 172141]

[image] Beginner96: What am I doing wrong? You have removed the msg. as well as the square brackets.

When i try "msg.IAQ_pm10" i get "NaN". [image] Colin: Get rid of the square brackets. I thought I should get rid of them ?

[image] Beginner96: When i try "msg.IAQ_pm10" i get "NaN". If you look at the debug node output you will see that each message only contains one of the values, the other one is not present so you can't take the maximum of the two of them, as only one is available at a time. If these values a…

As with many things in life there are so many alternatives. One is to use context to capture the values from the incoming messages. An example like this I think will work (you have to extend it to cover all your values). Try the code in your function node if(msg.IAQ_pm2){ context.set("IAQ_pm2",…

You are the greatest man :smiley: It works perfect. After I get a good grade for this project I'll send you a present :smiley: Don't know what I would have done without all your help here

Thank you very much for your kind words, it was a pleasure to help! I'm glad it works as you want. Node-RED has so many possibilities to be applied in various projects for various tasks, it's really powerful!! I hope you succeed with your examination at your university! Best regards, Walter

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Python Script into .JSON file for node red?

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Beginner96 18 May 2021 15:24 72

When i try "msg.IAQ_pm10" i get "NaN".

I thought I should get rid of them ?

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Python Script into .JSON file for node red?

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