My next update is taking a little longer than i had hoped. I have been building my prototype circuit on breadboard but it was behaving rather strangely. I would load my test program, all works fine then suddenly it would stop working. After unplugging things and plugging them back in again things would work again but then the next day the whole thing wouldn’t work. I finally got fed up with trying to get the breadboard circuit to work and i’ve been building my circuit on strip board (veroboard). This is a step that i was going to take eventually anyway but ideally not this soon.
The circuit is based around two pic16f887 microcontrollers. One is going to control the main clock functions and the other is going to control the lights on the front of the word clock.
Building this circuit on strip board is taking quite a while so please have patience, I hope to have a post up mid week describing the circuit.