Thanks again,
Missing connections? Do you mean the 20k resistor which goes somewhere... between pin 10 an 11 on the 1st IC.
What else have I missed?
I'm not too fussed about Dot mode.
I have added dpst jumpers to the design so I can cap them so I can see how it works once im happy I will leave it in one of the modes.
There is one extra modification I would like - I might be pushing my luck...
It would be great if when it is turned on rather than all LEDs lighting up instantly there would be a very slight delay, so you turn on and they 'fill up' turn off and they 'empty' I would guess different value capacitors would be the way to go? I know this is adding more complexity, but it would look good. What do you think? Is it simply a matter of throwing in a few capacitors?
To think it through... turn on, capacitor fills causing delay, led 1, then 2 then 3... turns on...
turn off - smallest capacitor empties the quickest causing led 1 to go off first...
I see a problem, hmmm.... an interesting effect which I could live with, but would be nice for led 3 to go off followed by 2 then 1...
Your thoughts?
Oh and believe me I don't plan to do any other complicated circuits anytime soon, an this really is the last finishing touch - I am really really gratefull for your help, both chemelec and alec_t
I will post pictures of it finished (when we get there) - maybe a youtube demo too.
I am going to use OSH Park to make the circuit board (after bread boarding), just got a few back and they look great, great quality and cheap. Don't know if you have used them?
https://oshpark.com
Gary