GameBoy dmg: backlight+biversion effect mod
more accurately im just showing the end results as theres already good tutorials of how to set this up ( I wanted a switch mode version and found this nitro2k1’s tutorial which I followed)
stuff you’ll need:
hex inverter 74hc86 ic (if you dont need to switch invert mode you can use a 74hc04 ic instead)
Single Pole Single Throw Toggle switch
backlight screen (http://asmretro.com/density-backlight)
triwing screw driver( retrotowers )
philips screwdriver tiny one
optional stuff :
leds, blue, purple ,white etc( for power light)
colour cases,silicone buttons
lsdj software (for making chiptunes)
everdrivegb cart ( hold all your fav games in one cartridge !) http://www.retrotowers.co.uk/everdrive-gb-game-boy
So here we have our biversion+switch mod effect:
with the polarizing film turned 90`degree anti clockwise which gives a softer tint nearer to the gameboy original green…works perfectly fine if not inverting..but we have the hex inverter with a switch so enabling that negative mode we can invert the lcd..which means we should turn the film 90 degree clockwise..
…which then gives you the sharper contrast look (and a bluey tint on the out sides) < this is the one to have ;i think it looks the best and is super clear.
Now i tucked the backlight in to the screen and also added a switch i salvaged from a broken toy it was small and tucked away nicely into case)(after carefully removing the polar reflective backing with a razor blade) Iwent a paintin… using some paint pens posca types you can have fun creating your own image under neath the casing..suitably mario themed.
some tips i found along the way were grounding the unused inputs helps stabilize the chip .addin a 0.01uf ceramic capacitor across the 5v+ on the ic helps the noise ,getting the small smd ic versions would make for cleaner less stuffed case – but at the time i did mine i couldnt get one of these small ics ,so i squashed as best i could the large hex invertor into the top gap near the daughter board and power switch.
use lsdj or like to run multiple games at once…?>
Here you can see the process as i added inverter to the two data lines going from hex inverter to the lcd data ports… if you ground one of the data ports from the ic which would of gone to the lcd – you get a super contrast mode where i think its inverting one layer of gfx back to normal whilst the other layer is inverted.. (pic 2) but i decided to not do this ..as i like the fuller coloured in mario character (pic 3)!But interesting look to try for uber customizers out there