Elythera

Elythera is the offline electronics toolkit for hobbyists and students who live at the bench. Decode resistors by camera, run the everyday circuit calculations, and keep a personal inventory of components — all without an account, a subscription, or a single network request. Point your camera at any resistor and tap each colour band. Elythera reads 4-, 5-, and 6-band resistors and delivers the exact value, tolerance, and temperature coefficient in seconds. No internet, no cloud processing — the classifier runs entirely on your device. Prefer a manual approach? The Band Decoder lets you spin colour wheels for each band and see the live result instantly. Reverse Lookup goes the other way: enter a value in ohms and Elythera shows you which bands to look for, plus the nearest E-series preferred value. Every calculation you reach for is here: Ohm's Law (solve for any of V, I, R, or P), series and parallel resistance networks, LED current-limiting resistors with power dissipation and safety notes, wire gauge with ampacity and voltage drop over a run, and a full SI unit converter covering volts, amps, ohms, watts, farads, and henries. The Reference section adds colour-code tables, E-series charts, SI prefix scales, and capacitor markings — the pages you used to keep taped to the bench, now always in your pocket. The Vault lets you photograph and catalogue your parts with a name, value, category, and notes. Export a formatted spec-card straight to your photo library. Your amphora charges as the collection grows. Everything stays on your device — no data is ever collected, no account is ever required.