A $48 e-paper kit offers a passive alternative to smart home hubs

The smart home market now includes a low-cost option for users who prefer a static display over an interactive touchscreen.

Seeed Studio, a Shenzhen-based open hardware company, sold a $48 DIY display kit developed in partnership with TRMNL. The hardware features an e-paper screen that remains powered on without draining battery life quickly. Buyers can install any software ecosystem they choose, giving them full control over the content shown.

The kit serves as a passive information hub. Unlike active devices that require user input, this screen automatically cycles through data such as calendars, weather updates, and news feeds. The TRMNL platform supports a community that creates custom applications for the display. This design allows the device to sit on a desk or in a kitchen without demanding attention from the user.

TRMNL was founded in 2023 by indie hardware enthusiast Ryan Kulp. The company launched its first e-paper device through crowdfunding in 2024. Seeed Studio provides the physical components for the latest kit. The company is known in the maker community for its XIAO microcontroller boards.

The $48 price point positions the kit well below recent premium smart home releases. Apple recently announced the HomeView, a $299 hub designed for family interaction. The TRMNL kit operates in the opposite direction by focusing on passive viewing and open software standards. It avoids the subscription models common in many connected home devices.

Users who previously modified older business displays, such as the Lenovo ThinkSmart View, find this new kit more reliable. The Lenovo device, often found for around $30 at liquidation sales, ran a fork of LineageOS but suffered from low memory and slow performance. The new e-paper kit eliminates the need to navigate a sluggish interface, providing a direct and stable display of user-selected information.