Quadrocopters haven't exactly opened the skies for DIY exploration so much as they have for acrobatic feats, but the OpenROV project is hoping to make the briny depths friendlier for aspiring explorers and educators alike. The open source rover, spearheaded by NASA engineer and researcher Eric Stackpole, sinks to depths of up to 300 feet (100 meters), runs on eight C-cell batteries for approximately 1.5 hours and can clip by at three feet (one meter) per second. Within the laser-cut acrylic frame, a sealed cylinder
