Schematic of the HD44102 driver circuit Upcycling old, broken hardware can be a lot of fun and is always educational.

The Alphanumeric LCD for Arduino will be our first circuit: using only one component, and of course the LCD, we can povide our Arduino board with at least a 16×2 alphanumeric LCD display that we will ...

Naturally, he did what a lot of us would do and used modern hardware to interface with the original parts that still work. In this case it meant replacing the motherboard with an Arduino Mega 2560.