[Heine Nielsen] is just one such builder, creating a fully-featured laser rifle loaded with features. As far as hardware goes, [Heine]’s laser rifle is packed to the gills. There are two ESP32s ...

Here’s a DIY laser rifle which can explode a balloon at around 150 feet (45 meters) as well as some angry chemicals at a similar distance. Since there are plenty of videos of lasers doing that ...