The Parallax HB-25 Motor Controller is our single best solution for DC motor control. This module is dependable and highly-compatible with any microcontroller that can generate a servo compatible pulse.

In the simplest sense the HB-25 allows a DC Motor to be controlled much like a Continuous Rotation Servo.

While the signals are compatible, the HB-25 does not require refreshing as a servo does; a single pulse can maintain the output.

• Motor Size: 0.5 HP Max - No Minimum
• Motor Supply: 6.0 VDC min - 16.0 VDC max
• Load Current: 25 A Continuous 35 A Surge (13.8 VDC)
• Standby Current: 50 mA @ 6 VDC; 80 mA @ 13.8 VDC (fan on)
• PWM Frequency: 9.2 kHz
• Pulse Input: 1.0ms Full Reverse, 1.5ms Neutral (off), 2.0ms Full Forward
• Pulse Refresh Rate: Single Pulse Operation
• Modes: Single/Dual Motor Control
• Protection Circuits: Over Voltage, Over Current, Over Heating
• Fault Reset: Automatic
• Indicators: Power (green), Fault (red)
• Fuse: Mini ATC Standard with (1) 25A Fuse Included
• Cooling: Forced Air - Ball Bearing Fan
• Terminals: Screw Post at a 35 A Rating
• A single BASIC Stamp port can control two HB-25 modules
• Connector allows the ability to daisy chain up to two HB-25 modules
• Weight: 2.5oz (71 grams)
• Mounting: 2ea 6-32 screws on .800" centers

• Power Requirements: 6 VDC (min) to 16 VDC (max)
• Communication: Standard Servo Pulse (1.0 ms to 2.0 ms)
• Dimensions: 1.6 x 1.6 x 1.9 in (40 x 40 x 50 mm)
• Operating Temperature: +32 to +158 °F (0 to +70 °C)