Sparky -- Feature Ideas

New Components

Capacitor -- 2-pin, spans like a resistor. Stores charge, could show charge/discharge animation in simulation
Toggle switch -- like a button but stays on/off when clicked instead of momentary press
Potentiometer -- 3-pin variable resistor. User drags a slider to change resistance. Great for teaching voltage dividers
Seven-segment display -- 10 pins, lights up individual segments based on which ones get current. Visually impressive
Motor -- 2-pin, spins a 3D propeller when current flows. Simple but fun
Speaker/piezo -- like buzzer but with tone control based on circuit values

Conversation memory -- [DONE] Sparky remembers the chat within a session
Multi-turn tool calling -- after building, Sparky verifies the circuit by requesting simulation results and suggesting fixes
Explain mode -- user clicks any component and Sparky explains what it does, what it's connected to, and why
Challenge mode -- Sparky gives the user a circuit to build ("wire up an LED with a button") and grades their work
Debug mode -- "Why isn't my LED lighting up?" Sparky checks for common mistakes (backwards LED, missing ground, no resistor)
Circuit templates -- pre-built starting circuits users can load and modify (traffic light, alarm, etc.)

Undo / redo -- ctrl+Z / ctrl+Y to step back and forward through actions
Duplicate component -- select + ctrl+D to copy a component to a nearby position
Wire colors auto-assigned -- power wires red, ground wires black, signal wires auto-pick distinct colors
Wire routing -- wires that bend around components instead of going straight through them
Snap-to-hole preview -- show a ghost of the component before placing it so users see exactly where it lands
Component labels -- small floating labels on hover showing component values (e.g. "220 ohm", "Red LED")
Multimeter tool -- click two points and see the voltage / connectivity between them
Zoom to fit -- button that frames the entire circuit nicely

Current flow animation -- animated dots flowing through wires when simulation runs. Makes "electricity is flowing" click visually
Voltage labels -- hover a wire or rail during simulation to see the voltage at that point
Voltage color map -- wires and rails glow different colors based on voltage level
Short circuit warning -- flash the screen red or show a spark animation when there's no resistance in the path
Component failure -- LED without a resistor burns out with a puff of smoke (teaches why resistors matter)

Dark mode -- toggle between light and dark themes
Keyboard shortcuts help -- overlay showing all available hotkeys
Mobile touch support -- pinch to zoom, tap to place
Export / import .sparky files -- save circuits locally as files
Guided tutorial -- first-time walkthrough that teaches the basics step by step