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Original Display

Split-flap display showing OKAY — original rounded enclosure

The original design supports up to 8 modules on a single I²C bus. Full build instructions were written by Morgan Manly and are hosted on Instructables.

Build instructions

Full build guide on Instructables

The Instructables guide covers the complete build: 3D printing, hardware assembly, wiring, and firmware upload. It is the authoritative reference for the original design.

Version Characters Preview Print files
Original 37 Original rounded enclosure MakerWorld
Square 37 Square enclosure MakerWorld
Extended 48 Extended charset MakerWorld

The 48-character extended version is recommended — it includes lowercase letters and additional symbols.

Firmware

Both versions use the same firmware in this repository. Follow the firmware setup guide to build and flash.