9600bps clock source
Quick post from an old draft, mainly as documentation.
A 9600Hz oscillator circuit based on a 2.4576MHz crystal and a 74HC590 binary counter. The idea was to reproduce the set up from robotroom.com site with a bar crystal but I had some trouble making it work. The solution came from this document about crystal oscillator circuits that describes different circuits depending on the crystal frequency. Here you have the schema and a picture of the circuit: