(Topic ID: 165140)
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Quoted from barakandl:Considering the Bally driver board is not that tight spaced and the board house was going to charge me the same price for both layouts. I went with the bigger one. Figure no need to try and bend and cram transistors on there if not needed. Went with through hole transistors for ease of assemble.
Depending on what my time is worth to assemble them, they are cheaper than used pulls of CA3081.
Takes about a month to get the PCBs from the board house.
@Andrew:
What do you think of the arrangement in the following layout, should be smaller and pretty easy to solder for DIY 
Quoted from cody_chunn:This is what we're going to have to do for those Williams display chips...
Quoted from barakandl:Doing the UDN7180A would be a bit more complex. Here is what each circuit looks like inside the UDN7180A
He is how WMS implemented discreet devices.
Indeed, the 7180-Adapter is much more complex and cannot be made as small as the IC itself 
Quoted from barakandl:I think it is fantastic.
I get a bit OCD about right angles of tracks and parts being placed all in the same direction. But for something like this, reduction of size is important so it fits on all pcbs.
@Andrew: Some more inspiration
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