Components that earn their place.

A 4×4 matrix membrane keypad is an input device containing 16 push buttons arranged in 4 rows and 4 columns.

A multimeter is an electronic measuring instrument used to measure voltage, current, resistance, and continuity in electrical and electronic circuits.

A 4Ω 3W speaker is a compact audio output device with an impedance of 4 ohms and a maximum rated power of 3 watts.

A drone kit is a collection of components used to build and operate a small unmanned aerial vehicle (UAV), commonly known as a drone.

A plastic fan is a lightweight fan with blades made from plastic, designed to produce airflow when rotated by an electric motor.

A 12V LED strip light is a flexible lighting strip containing multiple LEDs that operate from a 12-volt DC power supply.

A D718 transistor (2SD718) is a high-power NPN bipolar junction transistor (BJT) used for amplifying and switching electrical signals.

A 2SB688 PNP power transistor is a high-power PNP bipolar junction transistor (BJT) used for switching and amplifying electrical signals.

A NE555 IC is a versatile timer integrated circuit used to generate accurate time delays, pulses, and oscillating signals in electronic circuits.

A UA741 IC is a widely used operational amplifier (op-amp) integrated circuit designed to amplify and process electrical signals.