I would personally leave it floating unless you have a reason not to. I would think a copper pad would be more durable. Whenever I take apart something with a PCB that is isolated from the case, I usually see a copper pad in a sort of star shape (like a ceiling fan) that has been tinned, likely for durability.
I thought there would be quite the rush of projects being entered, but apparently not. My computer just gave a "Hello World!" but I never took a picture. Once I get the ALU up and running I will post some pictures and a general description.
Why don't you just replace a shift register with an analog demux like a 4051? Then you can address the row, set the demux to low,and set all lights you want on high. Then flip the demux polarity and feed inverted data to the shift register. If you are short on pins you could also use the data lines of the other register as a demux address, as it is only used by the register on clock transitions.
[attachment=0]2.8" inch 320x240 Touch Screen TFT LCD Display with 16 Bit Parallel Interface I just bought one for $12.50 including shipping. I will see what I get. http://www.ebay.com/itm/181057393552?ss ... 1438.l2649 If it turns out nice I may buy another so I have one for each eye. :)
After I thought I finished everything, I get this warning on thwe arduino program: Blink.cpp:1: error: MCU 'atmega128rfa1' supported for assembler only Any idea what I missed?
I think that is it. Turns out the browser I was using at the time could not read the .css file for the site, which is all of the styling and formatting. There was just a long un-navigatable list of links. Thank you.
