One essential piece of gear for looking at the heavens: a night-vision flashlight, which you can make yourself. When stargazing, it's important to let your eyes adjust to the darkness. This takes ...

The power cell is your flashlight's main source of energy ... Lucky for you I have a more detailed guide about making a simple joule thief found here: Making A Simple Joule Thief (made easy ...

In this video I test my DIY bat signal powered by the incredibly bright Imalent MS18 flashlight against the clouds. I also show an easy way that you can build your own image projector using a few ...

Instead, make this DIY light that can be powered by ... art.z came up with this neat idea for all of us who can never find a flashlight when we need one. Yes, the phone line will power the light ...