The Cyber Internet of Cats
The cyber cat consists of an ESP8266 chip with a servo motor and two WS8212 LEDs. We mounted the arm directly onto the motor.
The system connects to an MQTT broker, test.mosquitto.org at the moment. It reacts to commands on winkekatze/allcats and gets a color name (red, green, pink, yellow, cyan) on jimmykater/eye/set. This cyber web page does nothing else but send the MQTT messages.