rink.nu / projects / LCD + RS232 + PS/2 terminal

Introduction

One of my first projects, and one of the hand-soldered PCB's which I believe looks nicest: I was in need of a simple VT100-like terminal and was wondering how hard it would be to hook up 2x HD44780-type LCD displays to an AVR with a serial port and a PS/2 keyboard interface.

As it turns out, this isn't that hard and it gave me a nice understanding of the HD44780 interface and PS/2 protocol. I hope this will be useful to anyone else.

Schematics

schematics

Photos

PCB front

PCB back

Source

The schematics and source code is available at GitHub. Code reviews, patches and comments are always appreciated.

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