Ulti-PET

Provides source files for a Cherry-compatible Commodore PET N-type keyboard with printable supports and keycaps.

For this compatible system (exact system): The repository documents the keyboard as part of the Ulti-PET family. Its extended interface can add key remapping and RGB LED control. Confirm matching current board and firmware revisions before fabrication.

The repository was actively updated in June 2026 and supplies PCB, firmware, support, test, and keycap files. It is an advanced source build rather than a complete retail kit. The maker built it principally for the Micro-PET and Ulti-PET family and explicitly says installation in an original PET is possible in principle but untested.

Builds an integrated modern PET-compatible computer with selectable PET models, accelerated operation, enhanced color video, storage, audio, and current input.

For this compatible system (exact system): This is the mainboard for the Ulti-PET compatible system. A Commodore 64C-style case needs additional connector openings, or the builder can use the project's custom printable case. Custom VGA timing can limit compatibility with newer PET graphics demonstrations. IEC ROM support remains marked to do, and the optional Wi-Fi breakout has not been tested or programmed.

No current assembled seller was verified. Revision 1.3A has public GPL-3.0 hardware files, but a build requires fine-pitch surface-mount assembly, separate FPGA and ROM projects, and programmed devices. The family documentation warns that boards, bills of materials, and firmware are moving to newer video timing and says to contact the maker before building.