Just to show people we're still working on a cheaper redesign of the BT/USB adpater, I'm posting a render of a board that David has been developing while I'm dealing with my day-job duties.

You can see the old design on the left side of this board, and the newer design on the right.

Instead of the 1 x AD5242 digital pot chip and 4 x ADG715 digital switch chips of the previous design, the new design will use 1 x GPIO extender chip and 2 x Digital to Analog chips. With fewer and cheaper chips, the new design will be significantly cheaper than the original design.

The board will be smaller as well.

Until I get my day-job duties out of the way, I won't be able to build a breadboard prototype, so it might be a couple of weeks yet before I can build a testing model.

If the new chips work out, the final board won't have any AD5242 or ADG715 chips. So alot of what you see on the left side (except the 40pin header) of this board will be removed.

The design still requires a Pi Zero WH and Python with JSON to program. However, I think the new design can probably support any console (or at least most) that uses 15/9 DSUB pin connectors for controllers.