after all the good advises I've tried to make the astables using a CD106 inverting Schmitt-Trigger.
The clocking works well. This way 50 LEDs can be lit with 6 ICs, one for a clock signal oscillator and five clock inhibit oscillators, five ICs for the counters.
Using junk resistors and capacitors they might all be of the same value causing different frequencies which are a MUST for that circuit.
A tolerance of 40% would make the circuit perfect.
Otherwise modify the R and C values slightly for different clock inhibit frequencies.
Hans, were you able to come up with a schematic that works? I played around with the simulator a few times, and could only get to the point where a single random LED would turn on, and stay on until i reset the circuit. I couldn't get them to change without resetting.
You can post the files here and change the extension or something. I never got any emails from you.
Thanks!
Nate
These are great! I will try to set them up using ISIS so I can simulate the effect. I like the idea of being able to tune the circuit to what I want without buying all those parts!
Thanks a lot for your help, I will let you know when I have something ready.
Nate