PineBook Pro revision 2.2: Wishlist for the hardware issue fixes

[Arwen]

Built in debug console to usb conversion with a micro-usb port on the side.  This would avoid needing to switch between usb and headphones, fix incorrect voltage on serial console cable (should be 3V, not 3.3V and not 5V!), eliminate the need for a special debug cable in the first place, fix the danger of connecting a serial cable without an opto-isolator, and prevent possible noise on audio lines from injecting garbage on the serial port that prevent u-boot from starting.
This only requires a simple chip and connector, it looks like there is plenty of space for it.
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I have the same idea. But, in some ways we don't have to wait for a new main board. Basically make a replacement daughter / small board with the serial to USB chip on it, and MicroUSB for outside communication. The serial lines are available as solder pads on the main board. If the replacement daughter / small board has a connector for these lines, we can use either existing or new, by just replacing it. No further soldering needed.

This would leave space on the main board side for a connector of different a use, (another USB 2.0 port from the internal USB 2.0 hub?).


If it had not been for the challenges this year, I might have pushed forward with that project. Even to the point of making 20 or so, then offering up the others for sale here at cost & shipping. (But not development costs, I can "eat" that easily.)