Heya folks I have a project underway which will read sensor values and write to a CSV file. So far with 1 sensor I managed to add a timestamp and value to the file in CSV format with each read. I think in order to be most efficient it would be best to red all 6 sensors consecutively (modbus), updat…

edit your post and use: 3 backticks: ` your code end with 3 backticks: `

Think I did it....Doesn't appear to have changed

You didn't. [image] How to share code or flow json FAQs To share code samples or flow json in this forum, you need to take care to format it properly so that it is displayed correctly. The easiest way to do that is to click the 'Preformatted Text' button in the toolbar: …

(edited it for you... the backticks need to be on a separate line)

This sounds like a perfect job for a join node set to create an array and send the message once you've received 100 elements. edit: like so: [{"id":"edce42b4.209a2","type":"inject","z":"5936699f.67912","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"on…

[image] camo200sx: it would be best to read all 6 sensors consecutively (modbus), update an array, write to CSV, repeat. Indeed, sounds a straightforward approach. Considering that the output of the modbus node already gives you an array of all 6 sensors then all you will need is to insert …

Sorry for the late reply but boy am I busy. About to try your suggestions. Thanks all who helped out....I'll be sure to remember the 3 back ticks :slight_smile:

Heya folks. So I seem to have managed to get an array of 6 values and update the csv file. I'm wondering if it's possible to create a loop so the sensors are continuously read after say a switch is switched on the dashboard. I managed to create a button with message pass through and that worked, ho…

Hey look, all the boys are here....Can I get the final code? I have high speed sensors and I want to add a button to capture when I start a test run. Here is how far I've gotten. [{"id":"64790db0.313854","type":"serial in","z":"ff00b690.4e7c68","name":"Pressure Sensor","serial":"6bd65ea6.e09bb","…

Node-RED

Node-RED Forum

Send values to an array, write to CSV when full

General

bakman2 14 May 2019 08:28 4

You didn't.

Topic		Replies	Views
DS18B20 Temperature Driving Wemo Switch General	60	4385	28 May 2018
Aggregating sensor data with time stamp to save in excel General	12	2455	21 January 2020
Join node and order of messages General	7	4673	2 September 2019
Getting data to CSV General	1	1514	7 March 2019
Values to csv file General	5	842	3 March 2020

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.

Send values to an array, write to CSV when full

Related topics