Blynk Websocket NodeRed

[PeteKnight]

@marvin7

a node (which one??) trying to receive data from hardware client… (in fact from server). HOW??

I do that by sending the temperature via an MQTT message from the ESP to Node-Red every 5 seconds. No different from receiving the relay status from your Sonoff.

Am I misunderstanding your problem? What you’ve described here is quite a bit different from what you said earlier:

@marvin7

I failed to read Blynk’s Virtual Pins into Node Red

Pete.