How We Built the Quintessential Sentry Gun (Updated Sept. 26th) There will be a Mark II version. About the new video: -------------- Test2 actually has the first test we ever did as the last cut. Notice that we hadn't messed with many of the settings for outdoors, so the gun jumps around a bit because it's detecting Ezra as a number of blobs. He was also standing too close to the gun, because