Fab Academy 2018 - Thierry Dassé
E-bin is a modular bin where you can sort you wastes. You can connect until 5 bins together.
Each bin has a weigh device linked to a main board. After calibration, you can know each bin and global weights.
E-bin is made with 3mm MDF for the core bins, PLA for screws and weigh system.
Electronic device is based on ATtiny 44/84 with rotary encoder and LCD display
You can do it in a Fab Lab for less than 20$.