Example: Direct Power Supply Driving
This N20 DC geared motor is a power-only driven device with no control, communication or signal pins. Power it directly using an external DC 6V regulated power supply. Learn the motor behavior under normal connection, reverse connection and power-off conditions to achieve manual start/stop and direction control.
Hardware Preparation
- DC 6V regulated power supply ×1
- N20 gear reduction motor ×1
Wiring Diagram
Connection Description:
| Motor Pin | External Power Pin | Operation Description |
|---|---|---|
| + | DC 6V Positive | Motor rotates counterclockwise by default (viewed from output shaft) |
| - | DC 6V Negative | Forms power loop with positive terminal for normal rotation |
| Positive & Negative Swapped | Reverse power polarity | Motor rotates clockwise (viewed from output shaft) |
| Disconnect any pin | Power off | Motor stops immediately |
Result
When powered with correct wiring, the motor runs smoothly without jitter. It rotates counterclockwise with standard wiring, and switches to clockwise rotation after polarity swap. Cut off power to stop the motor. Simple direction control can be achieved manually by swapping power polarity.
Notes
- Do not operate above rated voltage DC 6V. Overvoltage for extended periods will burn the motor coil.
- Avoid prolonged motor stall. Long stall causes current surge and overheating damage.
- No reverse-polarity protection. Verify polarity before wiring. Frequent forced reversing may shock the gears.
- An H-bridge motor driver module is required for automatic direction change or speed regulation. Do not drive directly from MCU IO pins.
- Avoid forceful assembly and eccentric loads during mechanical installation to prevent gear wear and jamming.
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