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Introduction Continuing the development of my UV exposure box I have designed and built a countdown timer. There are a few others out there for the same purpose, but I wanted to add some more features to make things better. As I have mentioned in the previous post, safety was a big concern for me [...] 
Note: Don’t look directly into the UV LEDs. It harms your eyes. This project is featured at electronics-lab.com. There is also a part two, with a timer, check it out here. Introduction I have been using the toner transfer method for about 9 years with great results. Occasionally I would need a board with [...] |
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