Tag Archives: Light

Solar Cell Light Meter

solar cell light meterI recently got into pinhole photography and needed a light meter to calculate exposure times.  Light meter are ridiculously expensive and I figured there had to be a way to make one myself and it turns out, I was right.  I will walk you through how to make a light meter from a cheap battery tester and a solar cell ripped from a calculator.  You should be able to make one yourself for significantly less than $10.  Read on…

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Aquarium Lamp Stand

Aquarium Lamp StandI acquired a large, odd shaped, glass jar that I thought would make a cool aquarium.  Due to the strange shape, a traditional aquarium hood/light combo would not work on this aquarium.  I decided that a cheap aluminum 8.5″ clamp light would work well but I needed a way to hang it over the tank so I designed and build this simple wooden stand.  This lamp stand can be completed easily and cheaply.  Read on…

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Joule Thief in a Jar

jar_onIn this project I am going to show you how to make a joule thief and put it in a jar.  This joule thief is a simple circuit that will take an old “dead” AA or AAA battery and up the voltage enough to power an LED.  I use these as decorations and to completely drain batteries that are too “dead” to work in other devices.  Note:  The only unique idea here is to stick one of these circuits into a plastic jar.  The circuit is not mine. Read on…

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Replacement Ballast

ballast_rawSeveral years ago I needed to replace the ballast for the compact fluorescent bulb on a 13 gallon Nano Cube aquarium.  Looking around for replacement ballasts I discovered that they were quite expensive.  I had the idea to try to use the ballast from one of those screw-in fluorescent bulbs.  Well, It worked and since then, I have used this same process to power other compact and normal fluorescent bulbs.  Read on…

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