I sent 10 kits to the show – they will be priced at $60 each. One additional kit has been donated to the organizers as a prize/giveaway.
Here is what the built up superproto looks like.
More information is available on the SUPERPROTO wiki. This is currently a work in progress, as there are several areas that need more documentation. In particular is a description of how the copper layer in the proto areas is set up. It is kind of hard to see, since the solder mask tends to conceal the connections between the pads.
I also need to add a page to show how to connect the SUPERPROTO to a separate breadboard for easy prototyping.
More kits will be available in a few weeks, once I catch up on things.
After the grounding issue with the Brain Board, I did as much research on grounding Apple II plug in cards, as I could. This included rereading some Apple Tech Notes on the topic, which were somewhat insightful, as well as examining existing designs.
I really tried extra hard to make the ground plane on this board as good as I could make it, and still keep the 2 layer layout. The result exceeds my expectations, as the ground noise on the base SUPERPROTO card is almost non-existent. The 5 volt supply also received some attention, and it looks clean as well. In fact, the board looks much cleaner than my wire wrapped prototype, so I must have done something right.