Hi, I’m making a PCB UV exposure unit. It will work like a resin 3D printer. The high resolution LCD will display a photo of the PCB and UV LEDs will shine through the LCD and expose the copper plate. I haven’t found any information on achieving this using an atmega μc. Are there any LCD drivers capable of driving a 2K 8.9” LCD compatible with atmega μc?
Choice of driver depends on the exact nature of the LCD.
Few Arduinos have sufficient memory to control a high resolution display.
What LCD have you found that survives exposure to, and efficiently transmits UV light?
LCDs used in resin 3D printers. I’m planning on using an atmega32 and storing images on external storage like an SD card.
Have you looked at the resin 3D printers to see what LCD driver is used?
Wasn’t able to find any info on that, although I never really looked into it.
Edit: After some searching, I found that elegoo mars 3 has this IC for driving the display:
ESMT M12L64164A
Maybe you can convert a projector to UV light?
I assume the Chinese hobby-PCB manufacturers are using a laser scanner. Or, you can do it with a laser engraver (basically a slow-speed vector scanner). Or a modified CNC machine with a low-power laser instead of a cutting tool should work.
Honestly, I looked into making a CNC machine, but after some time, it doesn’t even come into consideration because only the frame would cost more than the LCD solution.
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