Arduino MOSFET LED Strip Example is an engineering topic related to power design. It helps designers estimate values, avoid common mistakes and choose practical design parameters.
Real results differ because of tolerances, temperature, PCB layout, parasitics, cable losses, power supply behavior and measurement conditions.
Use formulas and calculators as a starting point, then verify with datasheets, simulations, prototypes and real measurements.
Heat comes from power loss, voltage drop, switching loss, conduction loss and insufficient thermal dissipation.
Use generous margin for voltage, current and temperature. For production designs, verify worst-case conditions and derating requirements.