Haxiro

Haxiro puts a digital logic breadboard in your pocket. Place gates, latches, flip-flops, clocks, and probes on a 12x16 grid, drag wires between pins, and run a clocked simulation engine that animates every signal in real time — all offline, no account required. The simulation runs in three phases each tick: sources fire, the combinational net settles through up to 24 propagation passes, then sequential elements advance their state. HIGH wires pulse with animated flow, an UNSTABLE warning appears if the net cannot settle, and a built-in oscilloscope captures 64 ticks of probe data so you can measure duty cycles, spot glitches, and inspect transitions at a scrollable time cursor. Work through 18 structured puzzles in three tiers. Foundations covers basic gates and Boolean logic. Composition builds half adders, full adders, multiplexers, and parity circuits. Timing challenges you to design SR latches, clock dividers, two-bit counters, edge detectors, and ring oscillators — each verified automatically against an exact truth table or scripted stimulus sequence. The Vault stores up to 12 named circuits with optional reference photos from your camera or library. Five visual settings let you tune wire animation, haptic feedback, and the signature particle field that illuminates live nets on the board. Haxiro requires no internet connection, collects no data, and runs entirely on your device.