PROJECT TOPIC · MOTORS
Motor Circuit Projects
Learn how switches, NPN transistors, resistors, and flyback diodes control small motors safely.
01 / GUIDED BUILDS
Choose a circuit
9 visual projects in this topic.
Protected Transistor Motor Driver
Add a reverse-biased diode across the motor to give inductive turn-off current a safer path.
Transistor Motor Driver
Use a press switch and small base current to let an NPN transistor control a motor load.
Hear the Motor
Recreate manual Project 30 by putting a motor and speaker in the same current path.
Lamp and Fan in Parallel
Recreate manual Project 29 with separate lamp and motor branches across the battery.
Lamp and Fan in Series
Recreate manual Project 27 with the lamp and motor sharing one current path.
Motor Sound with LED
A protected LED variation of manual Project 31 that makes motor-current changes visible.
Pushbutton Fan
A momentary-control variation of manual Projects 8 and 9 for the motor and fan.
Magnetic Motor Control
Start a motor by bringing a magnet near the reed switch.
Tap-Triggered Motor
Use a vibration switch to pulse the motor when the board is tapped.