College of Engineering and Polymer Science

Date of Last Revision

2023-05-04 18:55:54


Electrical Engineering

Honors Course


Number of Credits


Degree Name

Bachelor of Science

Date of Expected Graduation

Spring 2021


The automatic longboard anti-lock braking system is a system designed to prevent a longboard from exceeding 12 mph while considering slipping and skidding, making it safer to ride a longboard. Speed limiting will be accomplished through wheel speed and incline angle measurements and brakes engaging or disengaging depending on internal decisions. Excess energy will be removed from the ABS as heat. Wheel speed and incline angle testing were done with a wheel speed sensor and an inertial measurement unit, respectively. Internal decisions were tested with programming a microcontroller, and braking was tested with motors. The wheel speed sensor yielded measurements within 2% of corresponding tachometer measurements, with the sensor and tachometer measuring 1304 rpm and 1281 rpm in one instance, respectively. The IMU gave results within 5% of the actual incline values, and the microcontroller correctly responded to input speed scenarios. The motors generated 2.205 V at 13 mA when unloaded and dropped to 1.900 V and 1.241 V when directly connected and when loaded with 500 mΩ of resistance. From these results, it was determined that the design would be feasible for physical implementation.

Research Sponsor

Greg Lewis

First Reader

Nathan Ida

Second Reader

Robert Veillette

Honors Faculty Advisor

Robert Veillette



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