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

 

Hi Nate,

sad to read that. I sent the files more than one week ago. As I received no return message I assumed that you have received them.

Anyway, I'll try two things: post them here as a *.zip file and resend via e-mail.

The internet band width in Thailand is surely not the best. Additional server failures do the rest for the worst internet connection I know of.

Hans

 

Hi Nate,

here I am again.

Two sets of files - PSEUDO-RANDOM.zip (Basic version with NE 556 and 1 counter)

- PSEUDO-RANDOM-I.zip (Extended version with C-MOS-ICs and 5 counters)

Remark: The reset pin(s) (pin15) of the counter(s) must be tied to GND at all times.

Hans

 

I got them this time. Thanks a lot! I will check them out tonight.

I am sorry to hear you sent them. I had assumed that you were busy, and I dont want to bother you.
I really appreciate your help though!

I will be sure to post links and pics to my projects when i get into the design phase.
Peace, Happy April 20th
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! :P

Thanks a lot for your help, I will let you know when I have something ready.

Nate