My node red project has evolved quite a bit since I first created this blog... I am running node red on a Raspberry Pi computer. My home automation tools include the ESP 32 devices running micro python and communicating with Node Red using the mosquito aka MQTT communication protocol over my home wifi network. The ESP 32 devices have wifi built in and quite a few IO ports some of which can be used to turn on or off relays connected to it which give it the capability to control lights, fans, pumps, and even strings of LED's that can show any color in the rainbow. quite a few of these SP 32's have DHT 22 heat nd humidity sensors and the Node Red can record this information and crete charts to display this data. You can also create buttons on the screen that allow you to turn on or off devices on the network.
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