An Ambient Approach to Time Management

The internet makes virtually all human knowledge available to us at all times. With that abundance of information, we can dramatically boost our productivity and accomplish things that would not have been possible in the past. However, it also introduces the problem of information overload. Have you ever noticed how hard it is to pick a movie to watch when you have tens of thousands of options to choose from? You might spend half the night just scrolling through a list. But when the only choices were on four over-the-air broadcast stations, the decision was an easy one.

Smartphones only amplify information overload by continually nagging us with notifications. They are undoubtedly useful, which is why we put up with them, but they also frequently distract us from more important matters. Paul Lagier recently created a device that is designed to condense and curate these notifications so that we can get all of the benefits without the distractions. It gives you an overview of everything you need to know at a glance, but it does not demand your full attention.

Lagier’s solution takes the form of a compact, battery-powered ambient calendar display built around an ESP32 microcontroller with a tiny LED matrix. A small 500 mAh lithium-polymer battery powers the device for several days, while a dedicated charging board manages energy safely and efficiently.

Instead of listing events in text-heavy formats, it visualizes an entire day as a grid of light. Each LED represents a 15-minute block of time, with white pixels marking the timeline and yellow pixels indicating scheduled events. This approach allows users to instantly gauge how busy their day is — and, more importantly, how much free time remains — without unlocking a phone or opening an app.

Lagier wanted to make sure that the information could be conveyed at a glance, so he put a lot of effort into preventing light bleed from the LED matrix. Early prototypes appeared as a blurry glow, but the addition of a 3D-printed black grid solved the problem by isolating each pixel. The result is a crisp, retro-inspired display housed in a snap-fit enclosure that requires no screws, making it accessible for hobbyists to replicate.

Rather than relying on a traditional user interface, the device changes modes based on orientation, offering a calendar view, ambient lighting mode, Wi-Fi setup mode, and a low-power state. A simple shake gesture triggers scrolling text that reveals event names, providing detail only when requested.

By updating calendar data every 30 minutes via Wi-Fi, the display remains current without being intrusive. With an estimated build cost between $15 and $30, Lagier’s project demonstrates how a smart design can reclaim attention in an age dominated by constant digital interruptions.