Practical mobile tools, designed to work where people actually work.
Electrical calculations for electricians and solar installers: PV strings, DC cables and voltage drop. Compare options, save projects and export PDF reports. No account needed.
Electronics, embedded and Modbus tools for engineers, technicians and students: Ohm's law, dividers with schematics, LED and LM317, UART, ADC, NTC, PWM, CRC16, a real Modbus terminal (RTU over USB, Modbus TCP) and a bus analyser. Example values are pre-filled and history reopens any calculation.