Hardware update

After much consternation, running of lmilk, and reflashing of my arduino board, I am still unable to get anything that looks like valid I2C traffic from the peripheral bus. It's just possible that my arduino board is still too slow, as with an extra timing loop I clock in at around 200Khz, but it ought to be fast enough when I take the timing loop out. It's also possible that lmilk doesn't work at these frequencies (at least not with the ~6ft parallel cable I'm using). But at this point I am starting to suspect that this page might be fake. I just put in a sample order for some pca9539 chips, so when they arrive I'll try to duplicate his circuit exactly and see what happens.