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PCB UV Exposure Box

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I started playing around with photo-sensitive PCBs. So, I needed a device to expose PCBs. It's not just a UV light, we need to control the exposure time and other paramaters. So I used an Arduino for control and to give the user a way to set the time of exposure. In this write-up, I will give you some details on how I did this. Now, you don't need to make this project overly complex and there are ways to simplifiy it. With my own experience, I started with the bare minimum but, I found it a bit, 'lacking.'

I hope you will find this useful and a time saver. I will tell you what worked, what didn't, and any issues I found, and to overcome them.

First, here's the schematic for the entire project. I will post individual schematics of each module to make it easier to follow. The circuit isn't complex and mostly beginner oriented. The code for the Arduino is the complex part but you don't have to understand it as it's complete and is free of bugs (I think).

Item Description
Wood or Metal Box Description goes here
UV LEDs Description goes here
Perf Boards Description goes here