PWM DC Motor Speed Controller Module — 1.8–15V, 2A, Adjustable, -40°C to 80°C

PWM DC Motor Speed Controller Module 1.8–15V, 2A, Adjustable, -40°C to 80°C

$9.24 USD

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PWM DC Motor Speed Controller Module — 1.8–15V, 2A, Adjustable Duty Cycle

This PWM DC motor speed controller module provides smooth, stepless speed control for DC motors from 1.8V to 15V at up to 2A continuous current. Using pulse-width modulation (PWM), it adjusts motor speed by varying the duty cycle via an onboard potentiometer — maintaining full motor torque at low speeds unlike resistive voltage divider controllers. Operating from -40°C to +80°C, it is suitable for indoor and outdoor applications.

Key Specifications

Parameter	Value
Input Voltage	1.8V – 15V DC
Max Output Current	2A continuous
Control Method	PWM (pulse-width modulation)
Speed Adjustment	Onboard potentiometer (0–100% duty cycle)
PWM Frequency	Fixed (internal oscillator)
Operating Temperature	-40°C to +80°C

PWM Speed Control vs Resistive Voltage Divider

Feature	PWM Controller (This Module)	Resistive Divider
Torque at Low Speed	Full torque maintained	Reduced torque
Efficiency	High (>90%)	Low (heat loss)
Heat Generation	Minimal	Significant
Speed Range	0–100% smooth	Limited range

Why Choose This PWM Controller?

✅ 1.8–15V wide input — compatible with 3.7V LiPo, 5V USB, 9V, and 12V supplies
✅ Full torque at low speed — PWM maintains motor torque unlike resistive control
✅ 2A continuous — drives small to medium DC motors and fans
✅ -40°C to +80°C — reliable in outdoor and automotive environments
✅ Simple potentiometer control — no programming required