I've designed what I hope to be a simple solution to replace the stock 5200 sticks, with a standard 1 button digital sticks(2600 style). It will function similiar to a masterplay interface.
There are a few other designs floating around but I think I've got a good one and it should be very manufacturable. I have parts on order right now, I am hoping to have working samples in a few weeks. If all goes according to plan I hope to make a few spares and "release" them for testing. Then if no problems are found, I'll consider getting some boards made and release it as a product.
However before anyone gets too excited, I'd like to know what the most you would pay for this is? Most likely no packaging or case, just a fully assembled and functioning circuit board. The board would have a 9 pin connector for digital stick and a 15 pin connector for the 5200.
If it doesn't sound like a worthwhile endeavor and use of my time, then I'll either scrap plans for a release or else make it a "trade only" item. I welcome your thoughts.