February 24, 2007

Different Colored Flamed Candles
Crazy Hacks

9

Who says candle flames need to be yellow. The candles from More Than Light put a fun spin on an everyday item. “The More than lights online store offers clear paraffin oil as well as a variety of colored oils designed for burning in clear (glass) containers, enhancing the natural beauty of the oil lamp and adding additional color to the lamp and room. Our colored oils are available in

UV LED PCB Exposure Scanner
Computer Hacks

7

Sapa responded to this article with an example of his creative PCB exposure system made from an old computer scanner. “I have build UV LED lightbox using old flatbed scanner and 40 Kingbright L-7113UVC LEDs. These LEDs have narrow ray (+-10 degrees), it helps to get sharp shadow on photoresist even if photomask is not cling to the PCB very tight. LEDs mounted on carriage moved by stepper motor (scanner’s