Haven't had a lot of time to work on this, and still learning Eagle, but here is what I can show.
Space turned out to be tight for the original size board for the main 2 digit section, so on the left, I added an inch to ease routing on this 2 layer design. The 2 digit extension size remained the same as the original. I also cleared up space by changing out the on-board 555 based HV supply for the one Mike M. sells -- at under $10 it's well worth the price and the vertical footprint saves loads of space. http://www.ebay.com/itm/151587665616 Also made provisions for Dieters colon tubes. Or you can construct your own colons using the thru holes provided. Under tube lighting is a single 1206 LED of your choice. Most significant digit LED is separately controlled so it can be blanked when the tube is blanked. Again, the clock can consist of one main module and one extension, or one main and two extensions. 4 or 6 digits. The main module mates with any of the full size Arduino boards or clones. Software is open source and will need only minor mods to run the backlighting and colons, which will be controlled by previously unused Arduino outputs. The schematics are a little rough and not ready to show. The early layouts will be attached below. Feedback appreciated. Terry <https://lh3.googleusercontent.com/-xfxg6FqOP00/VOqSqKLI2vI/AAAAAAAAADI/fHKMe3sAWYE/s1600/main.JPG> <https://lh3.googleusercontent.com/--D1f2GVBdoc/VOqSwCMwKVI/AAAAAAAAADQ/6bsUb5TCeE0/s1600/extension.JPG> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c9b8f45b-bed5-4124-a05c-e082ce771dde%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
