What problem does it solve? Designing retro electronics projects like 6502 computers or 555 timer circuits requires careful planning of component placement and wiring on a breadboard, and doing this on paper is error-prone and hard to revise. This Skill produces visual breadboard mockups and circuit diagrams so builders can verify layouts before touching physical hardware. ## Core Features & Use Cases - Breadboard Layout Generation: Render component placements and wire connections on a standard 20px grid using HTML5 Canvas, with support for rotation and color-coded wiring. - Vintage Component Library: Includes pinouts and rendering specs for the W65C02S microprocessor, 28C256 EEPROM, W65C22 VIA, 62256 SRAM, NE555 timer, 7400-series logic gates, LEDs, resistors, capacitors, switches, and crystals. - Engineering Reference Data: Bundled datasheets cover pinouts, timing formulas (astable/monostable 555 calculations, Ohm's law, LED current limiting), assembly language conventions, and EEPROM programming workflows. - Use Case: A hobbyist following Ben Eater's 6502 breadboard computer series asks for a mockup of the clock module; the Skill produces a canvas diagram showing the 555 timer, resistors, capacitors, and wire routing with correct pin connections. ## Quick Start Ask the assistant to create a breadboard mockup of a 555 timer astable blinker circuit with an LED output.