An infinity mirror in itself is always an interesting project, the reflections of the lights causing some great visual effects. However you can do much more, and this has been demonstrated by Instructables user "spacedandy". They've created two infinity mirrors and fitted them with LED strips which can be controlled by an Arduino.
The LEDs are switched on and off relative to the temperature measured by a DS18B20, with the arrow shapes in the infinity mirrors being used to indicate the rise or fall of the temperature. The project is demonstrated in the following video:
Considering this was the creator's first Arduno project, it is very well done. To reproduce your own version, check out the project Instructable. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
To get started with your own temperature-controlled projects, consider using our TEMP: DS18B20-based temperature sensor module:
... or our HUMID: Humidity and Temperature sensor module based on the popular DHT22 sensor unit. Both modules are fully documented and easy to get started with. These are only two of over a dozen of our sensor and outputs modules.