DIY LASER POINTER UPGRADE — Long Battery Life, Rechargeable, and Reliable 🔴 In this video, I'll show you how to build a DIY laser pointer using a laser diode, a 18650 rechargeable battery, and a battery holder — a much smarter design than most cheap laser pointers . DIY LASER POINTER UPGRADE — Long Battery Life, Rechargeable, and Reliable 🔴 In this video, I'll show you how to build a DIY laser pointer using a laser diode, a 18650 rechargeable battery, and a battery holder — a much smarter design than most cheap laser pointers . Laser Pointer: Lasers these days come in many different shapes and sizes. Building your own, you also have the option of making it almost any color laser you want. There are new laser diodes that output violet, green, two shades of blue, three shades of red, and e. A laser pointer is a small handheld device, which emits a narrow and coherent beam of light. Most of the materials mentioned in the things you'll need. This burst is very small and very short that in most situations would not even kill the laser diode, but there are times when the burst packs some power along with it, supplying well over a watt of energy to the diode. more DIY LASER POINTER. Laser pointers were cool for about 30 seconds when they first came out, before becoming immediately passé and doing absolutely nothing to improve the boss's quarterly reports presentation. However, just as with boom boxes and sports cars, more power can always make things better. was. Instead of money on an outdated DVD player if you don't have one at home, look for some pocket change and go buy a push button, a few wires, springs, button cell batteries, and more importantly, the laser diode. You'll also need a small tube, like one that contains lip moisturizer.