Serial oled display kits picaxe picaxe axe033y the seriali2c oled and clock module axe033y consists of a pre populated pcb and a 16 x 2 oled yellow on black alphanumeric display when connected to a picaxe microcontroller it allows the visual output of user controllled or predefined messages or readings without the need for a computer communication between module and microcontroller is via a simple serial 1 wire connection or via a i2c connection additionally the small footprint of th