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Http://optoelectronics.liteon.com/upload/download/DS86-2013-0004/LTR-303ALS-01_DS_V1.pdf Optoisolator with LED backlight TFT graphical display 480x272 16-bit colour with LED backlight 128x64 RS-232 I2C or SPI http://www.lcd-module.com/fileadmin/eng/pdf/grafik/edip128-6e.pdf LCD-graphical display with a hair of margin // margins from edges h_margin = hole_dist_side*4; v_margin = hole_dist_top*2 + thickness; v_margin = hole_dist_top*2 + thickness; working_height = height / 2 + (enable_stem ?