• Its DC motor means there's no regenerative braking, but he claims it's cheaper and allows owners to rewind the armature or upgrade the brushes.

    ENGADGET

  • To create the tank-like motorized control mechanism and foot-controlled joystick, Ben uses an H-bridge DC motor driver and a few MOSFET transistors to rig the components together and ultimately control motor speed and chair directionality.

    ENGADGET: Ben Heck creates hands-free wheelchair attachment for expectant father

  • Designed to be lightweight and cheap to produce, the robotic bicep upgrade uses a (mostly) aluminum frame, battery-powered DC motor, cable drive system, racket braking and thumbstick controller for movement, with a BeagleBone board supervising the electronics that pull it all together.

    ENGADGET: UPenn's TitanArm exoskeleton prototype makes light work of heavy lifting (video)

  • The stainless steel enclosure houses the same 1, 400-watt DC brushless motor as the previous models, dispersing HEPA-filtered "sheets" of air through a single laser-cut slit in each of two wings that extend from the Tap's sides.

    ENGADGET

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