This video demonstrates the concept of a virtual remote control accessible on a smartphone, potentially replacing physical remote control units. In this case, it is a mimic diagram powered by Home Assistant and Node-RED directing the ESP8265 Infrared Transceiver microcontroller to turn multicolor LED strips on and off.
This video demonstrates how to randomize the behavior of some devices connected to the Home Assistant server. Randomization is achieved by modifying some functions in Node-RED with some basic math methods. This is particularly useful for decorative lighting and for some security appliances that need to avoid prediction.