4x20 Slim OLED (NHD-0420CW-AY3) Engineering Support December 13, 2021 16:32 Newhaven Display's 4x20 Slim OLED display demonstrating double height characters and scrolling text. Related articles NHD-0420DZW (6800 4-Bit/8-Bit) - with Arduino How-To Adjust Font Height - OLED Demo Example Code and GitHub Tutorial 7.0CTP-CAPE - BeagleBone System Images ( 05/19/21 ) : NHD-12864AZ-FSW-FBW