EE Calcs, an electronics workbench in the browser

Field notes

The index is arranged as a compact electronics reference bench rather than a single-purpose calculator: Basics covers Ohm’s law, resistor combinations, filters, LEDs, and 555 timers, while later sections move into embedded clocks, ADCs, UARTs, PCB traces, and RF. Several entries expose practical engineering constraints, including IPC-2221 trace sizing, target crystal load capacitance, UART divisor error, and microstrip stackup dimensions. The homepage states that the tools are free to use without sign-up.