motors

Motors and microcontrollers 101

Continuing with their fine series of tutorial videos, Humberto from NerdKits shows a number of basic experiments you can do with a DC motor, how EMF, resistance, and inductance influence the design of a motor control circuit, and finally, how to use toggled digital output and pulse-width modulation in driving the motor via a microcontroller. […]

Ultrasonic haptic vision system

Ultrasonic haptic vision system

Rohan Sharma and Jeff Buente, at Cornell University, posted detailed notes on their haptic vision project: The ultrasonic haptic vision system enables a person to navigate hallways and around large objects without sight, through the use of an ultrasonic rangefinder that haptically interfaces with the user via tiny vibrating motors mounted on the user’s head. […]