MQTT Node-Red Smartplug - Easy (?)

[martinus]

Tried to figure out the easy way to control a smartplug using MQTT and local pushbutton control with feedback to node-red, without using any rules and just two simple to understand topics:

Code: Select all

TestUnit/SmartPlug/Set
TestUnit/SmartPlug/State

So instead of using existing options like /sysname/GPIO/<pin> or /sysname/CMD with the entire command GPIO <pin>,<value> as payload, i decided to add a small feature to the C005 MQTT plugin so that it matches incoming topics with the list of active tasks by name, conforming to <sysname>/<taskname> structure that's also used for publishing the state. This way, the payload for set/state is equal (1/0) and Node-Red understands this without any additional tweaking.

And created a new dedicated SmartPlug plugin that combines the Relay/Led/Pushbutton to make things more easy.

The plugin needed to configure the pins to use on the smartplug:

SmartPlug.png (15.32 KiB) Viewed 4609 times

Simple Node Red flow for the dashboard:

NodeRedFlow.png (11.1 KiB) Viewed 4609 times

Simple lean and mean dashboard:

NodeRedDashboard.png (8.94 KiB) Viewed 4609 times

The button on the dashboard uses the feedback, so it only flips when it has received the actual state back from the ESP.
And using the local button flips the switch on Node-red as well.
When the local button is used, it will control the relay/led locally, so it will still work when the network is down.

I'm used to Domoticz (HTTP controller) only, so most of this stuff (MQTT, Node-Red) is fairly new to me.
Maybe this approach is even more than required, so pls guide me if it can be improved.

[happytm]

I learned a lot watching these node-red detailed examples videos at https://www.youtube.com/watch?v=mW9LKlm ... MzlweP9FdQ

He used to be active on ESPEasy forum.All his ready to use node-red flows are at https://flows.nodered.org/user/nygma2004

Thanks.