MIKROE has introduced the DC Motor 31 Click, an add-on board designed for brushed DC motor control with precision torque adjustment and fault monitoring capabilities. The device represents the latest addition to MIKROE’s Click board family, which comprises over 1800 embedded solutions designed to reduce development time through standardized hardware and software products.
The board targets industrial automation, consumer devices, and robotic systems requiring efficient brushed DC motor control. Applications include air conditioning systems, printers, scanners, office automation, robotics, and factory automation.
DC Motor 31 Click incorporates the TB67H482FNG BiCD constant-current single H-bridge driver IC from Toshiba Semiconductor. The device supports motor supply voltages from 8.2V to 44V with output currents up to 4A. The integrated design features PWM constant-current drive capability, decay mode selection, and includes a trimmer for motor speed adjustment.
The TB67H482FNG utilizes a monolithic H-bridge structure with DMOSFETs as output power transistors, providing robust performance with built-in regulator functionality. The device incorporates comprehensive protection features, including overtemperature detection, overcurrent protection, and undervoltage lockout to safeguard both driver and motor components.
The board includes decay mode selection functionality through an onboard DECAY SEL jumper, allowing users to switch between Slow Decay and Fast Decay operation for optimized motor response and efficiency. Fine current control is achieved through an integrated VREF trimmer that adjusts reference voltage to set current thresholds for precise torque and speed management.
DC Motor 31 Click integrates the PCA9538A port expander, an 8-bit I/O device with an I2C interface that manages auxiliary control and monitoring functions. The PCA9538A controls five dedicated motor torque setting pins, enabling software-based torque adjustment through I2C commands. The port expander monitors error detection flag outputs while driving a red FAULT LED for visual fault indication.
Control functionality includes the RST pin for driver reset, the SLP pin for low-power Sleep mode, and the EN pin for main enable control. The board operates with 3.3V or 5V logic voltage levels selected via the VCC SEL jumper, accommodating both voltage-capable microcontrollers.
The device features ClickID functionality for automatic identification by host systems and maintains compatibility with mikroBUS socket standards. DC Motor 31 Click measures 57.15 x 25.4 mm and supports I2C and PWM interfaces with external power supplies from 8.2V to 44V.
Software support includes demo applications developed using NECTO Studio with mikroSDK compatibility, demonstrating motor operation by alternating direction between forward and reverse with braking intervals.
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