Artist and hacker KATSU has developed a spray painting quadcopter drone that allows him to paint via radio control. He has used the drone to create a series of paintings on canvas, but the technology could readily be used on hard to reach indoor and outdoor surfaces (KATSU initially gained notoriety as a graffiti artist). He’s also planning on making the drone fully autonomous and open source, which means one may soon be painting on a wall near you. KATSU’s paintings are on display at the Silicon Valley Contemporary art show, taking place at the San Jose McEnery Convention Center through April 13, 2014. KATSU talks about his drone project in this interview with Motherboard.