$48 DIY e-paper kit doubles as an always-on info display

A $48 kit from Seeed Studio, built with TRMNL, pairs a 7.5-inch monochrome e-paper screen with an ESP32-S3 board and a 2,000mAh battery. It can show calendars, weather and more through TRMNL's service, which needs a one-time $50 licence after a trial, Seeed's free SenseCraft platform, or a self-hosted server. Seeed claims up to three months of battery life.