Is there any way to control the brightness o a VFD (noritake CU16025F) the datasheet says "Brightness Set: R/W= L, RS= H, D0-D7=00H-03H" any suggestion?.
Note:I'm better in electronics than in programming so if it is too hard i'll adapt the Lcd BL control to handle the voltage of the onboard inverter!

I'll post the result if it works!