5V-30V 12A Adjustable Motor Speed Controller

This adjustable motor speed controller operates on DC input from 5V to 30V and handles continuous currents up to 12A (360W). Dimensions: 92 × 54 × 32 mm (L × W × H); weight: ~180g. Enclosure material is flame-retardant ABS, styled to fit standard 5135 instrument cutouts for plug-and-play panel installation. Internally, it employs two original low-Rds(on) MOSFETs and a high-speed gate driver — delivering low conduction loss, stable high-frequency PWM, and improved thermal margin versus basic MOSFET-only designs. Speed adjustment uses a digital rotary encoder — offering precise, tactile, and non-degrading control. Users define minimum output (to guarantee motor rotation or LED activation at lowest setting), maximum output (to prevent overspeed or glare), and base switching frequency (for noise or EMI optimisation). Step resolution is fully configurable from 0.1 to 25 — supporting both incremental fine-tuning and broad operational range shifts. Start and stop delays (0.0–9.9 s) are programmable to achieve smooth, jerk-free transitions — protecting motors from mechanical shock and reducing electrical stress on connected wiring and power sources. Includes a front-panel push-button and terminal block for external switch connection — enabling local operation, remote actuation, or integration into larger control systems. Designed for use with brushed DC motors (e.g., robotics, CNC accessories, ventilation fans) and PWM-dimmable LED arrays requiring stable, scalable output.