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Neat! I’m curious if one could design a usb type A plug/port that is reversible such that the PDM is always facing up. I know there are some flexible/thin pcb
by danbr 5y ago
Neat!
I’m curious if one could design a usb type A plug/port that is reversible such that the PDM is always facing up. I know there are some flexible/thin pcb that allow for this, although not sure how robust that design is (otherwise I’d assume we’d never have to worry about rotating the USB cable three times before getting it right side up. Maybe I just described usb type C :))
- zbrozek 5y agoI think you've hit the nail on the head: just use the type-C connector. Bonus, it means the connector could be on the same side of the PCB as all the surface mount components and not impact insertion direction. If you need a type-A, good news, there's adapters for that.
- fortysixdegrees 5y agoInteresting. You would have to invert the voltage on D+ and D- when it's in backwards. Or flip the lines somehow. Nice little puzzle that one
- RF_Savage 5y agoOne could just have the contacts wired differently on the otherside of the board. The larger problem would be the contacts in the "backside" of the plug getting shorted by the USB connector shield. Outside of that it does sound doable. Maybe with a thin pcb and a USB-A shell it'd be doable...
- jrockway 5y agoWhy not just put two plugs on the board, one in each orientation (and put the mic and rp2040 in the middle)?