Our version of the portable radar system for blind or visually impaired : its concept was invented by Steve Hoefer (http://grathio.com ) to be made with one’s family for less than 50 $ and to learn about arduino and digital manufacturing.
Our version of the portable radar system for blind or visually impaired : its concept was invented by Steve Hoefer (http://grathio.com ) to be made with one’s family for less than 50 $ and to learn about arduino and digital manufacturing.