Lyman Connor, a GE engineer who writes software for turbines and power plants, has always been a tinkerer. Among the tools in his garage is a 3D printer, which he decided to use to build a low-cost bionic hand. High-end electronic limbs use sensors that detect electric signals generated by muscles in the stump to control the prosthesis. But Connor was surprised to learn that some people who had lost a hand would be willing to control their prosthesis with their healthy hand. “One man told me to build him a smartphone app,” he says. “So that’s exactly what I did.”
Connor holding his bionic hand.
An early version of the bionic hand’s electronics were built around an Arduino board.