PCB UV LED Array Timer

That's a kind of project that took a long time to be finished, despite its simplicity! That's because I have used, for a long time, a UV fluorescent lamp box to do my printed circuit boards and I always thought that another one, using UV LED's, could wait once more time to be assembled!... Until now!
The main design consists of a wood-covered MDF box, a UV LED matrix board and a PIC microcontroller to control exposure time. All the projecs is described and available below.

* Laser-cut MDF parts;

* light imbuia sheet;

* UV LED array;

* PIC microcontroller timer circuit.

I developed a PIC and C 16F628A code-based timer circuit that controls a set of UV LEDs for the user-defined time. When the time is up, the LED array is turned off and beeps.
The circuit and code can be seen in the attached files.

Assembly is easy and can be seen in the following images. Simply glue the laser-cut MDF pieces and then cover the box with a sheet of wood, finished with 2 layers of varnish.
After that, the electronics are assembled, as shown in the pictures... Files attached!

Tests show that the project works very well, improving PCB constructions. UV LEDs are better than UV lamps, resulting in high quality PCBs.
I hope you enjoy this project!