Hi! I am looking for some advice. I want to send an image from a windows pc to a pi both running node red. Now i think about ftp to do the transfer or send the data file trough mqtt but i guess that is not ideal What should you advice to do this? and why so i learn from it :wink:

You can use MQTT to send images (just tested it and it worked fine)

Depends how much and how often I guess. How large are the images, and at what frequency would you like to send it?

I send still images from Pi cameras using MQTT, which works well, though I agree MQTT is not an ideal channel for this. I push the raw image data through a Base-64 encode node before transmission which allows them to be directly displayed on a dashboard on the receiving end with a simple template no…

serious? thats cool. Thought it would be to much for mqtt

Cool i am going to test it, thanks

The payload of the message is limited to 268,435,456 bytes. this is defined by the spec. No problem unless you have some serious imagery :wink:

can I get the flow of it?? I'm sending an image with base-64 encode but on receiving the same using base64 not able to get the image.

[image] pranavthakkar: not able to get the image. What does that mean? The data doesn't arrive at the MQTT broker? The data doesn't arrive in the 2nd node-red? The data arrives but you can't display it in dashboard?

I can get the data, Data from both MQTT send and receive have base64 node. At this moment I got the image successfully in the image preview node. Now I'm not able to see it in the dashboard. I have used a template node for that. but not able to see the image [image] [image]

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Transfer images between 2 node red install ( pi - windows )

General

Steve-Mcl 27 March 2021 09:21 11

Thats probably something simple. See the flow in this post, grab the template and ui_template from that.

Topic		Replies	Views
How to MQTT image from Raspi using Base64 and Template node Dashboard	3	1775	8 March 2021
Base64 string (image) to node red Dashboard	17	2607	2 June 2021
Read and write image in MQTT General	2	1180	8 February 2022
Send images from machine A to machine B General	22	1332	27 April 2020
Show Camera Image on Dashboard Dashboard	26	24453	28 April 2020

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Transfer images between 2 node red install ( pi - windows )

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