https://www.google.com/search?hl=en&q=Arduino+and+L298N&bpcl=38093640&ion=1&bav=on.2,or.r_gc.r_pw.r_qf.&biw=1600&bih=775&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=0lahUOi_BaLG0QXSgoG4Dg#hl=en&q=Arduino+and+L298N&bpcl=38093640&ion=1&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=0lahUOi_BaLG0QXSgoG4Dg&pws=0&bav=on.2,or.r_gc.r_pw.r_qf.&fp=7e14ae8b5d3ceaed&biw=1600&bih=775
http://arduino-info.wikispaces.com/MotorDrivers