Exploring the Design Space for Energy-Harvesting Situated Displays
summary
A thin, wireless, photovoltaic-powered e‑paper display is built with a thin‑film battery, Bluetooth Low Energy radio, and a simple pixel driver so it runs indefinitely on indoor light. Two prototypes use a 132‑bit shift‑register grid and a 24‑segment version, trading resolution for power; the low‑resolution design is about 35× more energy‑efficient than smaller high‑resolution panels. Updates occur every 1–25 minutes depending on ambient light and the system reliably wakes, communicates, and refreshes as described.
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chapters (14)
- 0:00Intro
- 0:36The Problem
- 1:15Postit Notes
- 1:59Batteries
- 2:24Use Cases
- 3:12Display Technology
- 4:00Communication
- 4:18Solar Panel
- 4:36Pixel Drivers
- 5:28Pixel Grid
- 5:56Energy Consumption
- 6:43Update Rate
- 7:18Future Work
- 7:39Hardware Bleeding
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