Power & conversion
Ohm's law, resistor dividers, LED series resistors, and ideal buck/boost converter design (duty cycle, inductor, peak current).
5 toolsPassives & filters
Series/parallel R & C (with k/M/µ/n suffixes), first-order RC low-pass, Sallen-Key 2nd-order, and capacitor reactance / self-resonance.
4 toolsDigital & protocols
CRC (8/16/32/64, common algorithms), COBS encode/decode, EMA filter design, and Qi.f fixed-point conversion.
5 toolsPCB & interconnect
Wire gauge (AWG) for a voltage drop, IPC-2221A track & via current, microstrip impedance, and E-series value finding.
Runs locally
All calculators are plain JavaScript — no server, no telemetry, no network calls. Your inputs never leave the tab.
Standard equations
Formulas follow the usual engineering practice (IPC-2221A for PCB current, standard CRC parameters, ideal CCM converter maths).
Accessible by design
Keyboard-first, visible focus, ARIA live result regions, and reduced-motion respected via the XCOM design tokens.
Reference knowledge
Built against the approved XCOM design profile and the embedded reference set. Source and provenance recorded in the estate knowledge layer.
Terminals & payload tools →
The other half of the tooling map: a Serial (Web Serial) and BLE (Web Bluetooth) terminal, plus CRC, byte-order/number, entropy and encoding tools, and a CNSA crypto toolkit.