PWM Motor Driver — DC 5–30 V, up to 15 A, digital encoder with stepless rotary control Key benefits — why you need this driver Wide voltage compatibility: Works with DC 5 V to 30 V supplies, so you can use the same controller across multiple projects and configurations without changing hardware. Precise, repeatable speed control: A digital encoder plus a stepless rotary knob provides high-resolution PWM adjustment from very slow to fast speeds, giving stable, predictable motor behavior. Built for reliability and protection: Input reverse-polarity protection and a maximum 15 A current rating help prevent damage under heavy loads and extend system lifetime. Reduced wear and downtime: The integrated soft-start reduces inrush current at startup, lowering stress on motors and power supplies and minimizing the risk of damage during frequent starts. How this solves common problems Eliminates compatibility headaches by handling a broad voltage range and many DC motor types and systems. Removes guesswork in tuning motor speed with smooth, fine-grain control from the encoder and rotary switch. Protects motors and electronics from common failure modes (reverse connection and startup current spikes), reducing maintenance and replacement costs. Features and performance Voltage range: DC 5 V to 30 V — suitable for a variety of DC motor systems. Speed control: Digital encoder combined with a stepless rotary control for high-resolution PWM adjustment. Current capability: Up to 15 A maximum, designed for demanding loads. Protections: Input reverse-polarity protection and soft-start functionality to limit inrush current and safeguard the motor. Typical applications Robotics and automation: Smooth, precise speed control for mobile robots, actuators, or robotic arms where repeatable motion and protection are essential. Prototype and hobby projects: Flexible voltage range and simple, accurate tuning make this driver ideal for development boards, custom motor rigs, and maker builds. Small machines and conveyors: Reliable high-current capability and soft-start reduce mechanical stress and extend motor life in continuous or intermittent operation. What to expect in use Consistent speed under varying loads when tuned with the encoder and knob. Fewer electrical and mechanical failures thanks to reverse-polarity protection and soft-start. Broad usability across projects because of the wide voltage range and robust current handling. Technical summary Input voltage: DC 5 V to 30 V Control: PWM with digital encoder and stepless rotary speed adjustment Maximum current: 15 A Protection: Input reverse-polarity protection; soft-start to limit startup current