The concept:

Normal bin converted into an awesome socially useful bin.

With the addition of a simple plate on top and some electronics we can improve quality of life.

The plate over the top now shows a slot for bottles. Just below this is a PIR sensor to detect bottles inserted. A light on top indicates how many bottles have been inserted. When the bin is opened the counter resets.

Extending this further is the cheap implementation of a weight sensor at the bottom. This allows data to be collected to see when the optimum time of rubbish collection is approaching.

Low powered internet connection is used to aggregate the data on a cloud server.