DIY UV-LED PCB exposure box in a scanner



This is my home made PCB UV-LED exposure box housed in an old scanner. The countdown timer is custom made using ATtiny2313 uController. The display unit is a 4 digit 7 segment display module. The firmware was written in CodeVisionAVR C compiller and the LEDs used for this project are 5mm high brightness (2000 mcds) UV LEDs. I used rice paper to diffuse the LEDs. The total cost is around 15 euro. Please don’t ask for schematics, pcb and firmware.

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