The LCD uses a PICAXE 18M2 Microcontroller as the serial driver. This allow the user to simply use a command such as; serout B.1, N2400, (“Hello World”). The kit comes with a 16 x 2 LCD display but this PLATFORM can also be used with OLED displays. There is an on board programming circuit so the 18M2 serial LCD driver can be reprogrammed to update the welcome message or add custom graphics.
The LCD firmware is availble from the PICAXE website http://www.picaxe.com/downloads/axe133.bas.txt
Please see PICAXE AXE133 Datasheet for help with commands http://www.picaxe.com/docs/axe133.pdf