Send mqtt message

Blynk Servers Local Blynk Server
1

Hi,

I created a virtual button on android side.
My question : is it possible to send a mqtt message when i click on that button ?
i would like the standalone server to manage that mqtt message without using esp8266 level ?
thanks in advance

2

Not really.
Normally, you’d use something like Mosquitto and Node-Red on a local server, and the Blynk plug-in for Node-Red. In that situation, pressing a widget button attached to a virtual pin will allow you to send an MQTT message from Node-Red without the need for any additional hardware.

Pete.

3

thanks now node-red installed and plugin as well
Do you know which port is the webhook port of Blynk localserver ?

4

It’s all there in the help screen, assuming that you’re using the correct plugin…

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Pete.

5

hi-again

here is the version : 0.0.3

Capture

blynk-websockets-client is grey , does it means that it is not installed ?

regards

6

That’s not the Blynk plugin that I use.

I would un-install that and install the node-red-contrib-blynk-ws version 1.04 instead.
This is available in the palette manager.

Pete.

7

If youre new to Node-Red then you might find this useful…

Pete.

8

do you have the same grey on your side for the client?

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9

Yes, that’s to indicate that this isn’t a node that will appear in list of nodes on the left hand side of the screen because it’s the core background process for the contrib.

Pete.

10

ok good the last !
i did that kind of test

image

Try to click on a button (Virtual V0) on my android and receive information in the nodered debug window
but even if i received that kind of information in the node-red-cli when i click on the button

22 Oct 20:47:34 - [info] [blynk-ws-client:test] writeEvent: -> cmd {“type”:20,“typeString”:“HW”,“msgId”:21,“len”:6,“msgLength”:11,“body”:“vw\u00000\u00001”,“operation”:“vw”,“pin”:“0”,“value”:“1”,“array”:[“1”]}
22 Oct 20:47:34 - [info] [blynk-ws-client:test] writeEvent: -> cmd {“type”:20,“typeString”:“HW”,“msgId”:22,“len”:6,“msgLength”:11,“body”:“vw\u00000\u00000”,“operation”:“vw”,“pin”:“0”,“value”:“0”,“array”:[“0”]}

nothing appears in the nodered debug window

do you know why ?

11

ok i find the solution
i replaced “readevent” node with “writeevent” node and it is ok
thx

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