Thread: Kindle USB Audio Adapter
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Old 05-18-2016, 02:51 PM   #89
geekmaster
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Quote:
Originally Posted by badgoodDeb View Post
How about the other piece of the puzzle? Do youz guys -- those in the game of playing with the guts of kindles! -- already have micro-USB to female USB port cables lying around by the dozens?

Is there a difference in the brands of micro-USB to female USB cable?

I guess it's still cheaper to buy that plus the sound card, but it is now getting closer to the cost of amazon's adapter.
Yes there is. As I mentioned, some adapter cables do not properly connect the center pin to ground, and so do not trigger automatic detection. However, though that was a problem on my Nexus 7, it is POSSIBLE that the kindle firmware has some other means of detecting a hotplugged USB device and interrogating it to see if SOFTWARE should enable OTG mode (even when that OTG trigger pin is not connected). Beware that some microUSB cables (or other devices) may connect various resistor values to that center pin, for other non-OTG purposes (such as enabling high-power recharging).

Not sure how the kindles work with "miswired" OTG cables...

I think I paid about $0.49 USD (including shipping) for my adapter cables (both the good ones and the bad ones).
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