Self-hosted alternatives to legacy-circuit-mockups

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legacy-circuit-mockups

HTML5 Canvas breadboard circuit mockups

legacy-circuit-mockups is an agent skill from the github/awesome-copilot collection that creates breadboard circuit mockups and visual diagrams for retro computing and vintage electronics. It draws interactive circuit layouts on an HTML5 Canvas, with more than forty components built in, including the W65C02S microprocessor, 555 timers, 28C256 EEPROMs, W65C22 interface adapters, 7400-series logic gates, and passive parts such as LEDs, resistors and capacitors. The skill knows the breadboard conventions of rows, columns and power rails, and it uses reference files for each component's pinout, so the placement and wiring it draws are correct. It is triggered by requests to lay out a breadboard, mock up a circuit, visualize how components sit on a board, draw wire connections, or build a visual reference for a project such as a 6502 computer. It is aimed at hobbyists, educators and people following retro computing tutorials, including the widely known Ben Eater series. A drawing is a planning aid, not a verified circuit, so the wiring should be checked against a datasheet and a schematic before any power is applied, since miswired chips can be damaged. The skill is installed with the skills CLI from the github/awesome-copilot repository. Its skills.sh page showed about 8.9K installs and passing results from three security audits at the time of the scan.