PLAY / BROWSER PREVIEW
Vocab Card · Paper Screen
An offline SM-2 vocabulary device with a reflective paper-like screen and two-button controls.
Preparing preview…
This is a browser preview, not a physical device. A working preview does not prove that a build is safe or compatible.
Hardware
Boards:Waveshare ESP32-S3-RLCD-4.2, ESP32-S3
Hardware: ESP32-S3-WROOM-1-N16R8 with a 4.2-inch 400 × 300 reflective ST7305 display and two keys. Browser preview runs the same SM-2 scheduling logic.
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Repository links do not imply author endorsement or verified hardware compatibility. Check the upstream safety guidance before powering or flashing a build.