Continuing the discussion on this old thread...

My 24 digit binary clock design had two, HV5530s separated by 12". The 
first in the data series worked perfectly, but the second would not because 
of too much noise on the data line. I had  two unused level converters on 
the CD4504 so I separated data and clock for each HV5530, and everything 
worked perfectly.

Now I just went back to my old, 15 digit Metronome clock that I'm going to 
update with Wifi LEDs, etc. It uses five, HV5530s. For that design I 
separated the latch and clock, one set controlling two HV5530s, and the 
other, three HV5530s, with the data line in series between all five.

Although it works perfectly, today it doesn't seem to make sense. What I 
should have done is to separate data and clock, not latch and clock, three 
HV5530s on one set of outputs from the microcontroller, and two HV5530s on 
another set of outputs.

Please let me know your thoughts on this. I'm working on the update now. 
Thanks.

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