Laser Kitty transMOGrifies into . . . Cheerlights Cat !
The Cheerlights project is bringing more colour to the world. The homepage is here : http://cheerlights.com/
In short, send a tweet including the word 'cheerlights' and the name of a colour and the lights on any Cheerlights device in the world will change to that colour. In the base of my cat is an ESP8266 based Wemos d1 mini running a BASIC program which checks the Cheerlights API every 15 seconds. The cat will also send a random colour every hour or so. I've used a 7 LED array of WS2812 'neopixels' and there is an LDR in the base which reduces the LED intensity in low ambient light.