Overview
L-O is an interactive device designed to help users remember to eat their leftovers before they spoil. The device features moving cylinders, with their height changing based on the remaining time before the food expires. Simply place your plate on the turntable, select the type of food and L-O will track the time left before the food spoils, catching your attention when you're nearby.
Ideally positioned near the fridge, L-O is equipped with two ultrasonic sensors - one to detect the plate and another to sense nearby people - ensuring timely reminders when you're in close proximity.
Front view
Interaction - reset the time
Top view
Interaction - select the food type
The model was designed in Fusion 360 and then created using 3D printing and laser cutting techniques.
User journey
- Placing the leftover on the rotating table The user places their plate with the leftover food on the rotating table. The table is designed for minimal effort, allowing the user to quickly position their plate without any complicated steps.
- Selecting the food type The user rotates the table to select the type of food they are storing (e.g., fish, meat, pasta, or vegetables). The user simply turns the table to indicate the type of food. The first available cylinder activates and its height increases based on the food type.
- Storing the leftover in the fridge Once the food type is selected, the user places the leftover in the fridge. The system now starts tracking the time left before the food spoils, indicated by the height of the corresponding cylinder.
- Visual reminder of remaining time As time passes, the height of the cylinder gradually decreases, visually reminding the user of the time left to eat the leftover. The movement of the cylinders draws attention, making it clear when it's time to consume the food.
- User walks by and its attention is caught The user walks past the fridge and notices the sinusoidal motion of the cylinders, which prompts them to check the time left for their leftovers. This serves as a visual cue to remind them to eat the food before it spoils.
- Eating the leftover and reset the time After finishing the leftover, the user taps the corresponding cylinder to reset it.
- Repeat the process The user continues this process with new leftovers, ensuring that the food is consumed before it goes to waste, with minimal effort and interaction required.