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QTPY USB Pads and Test Points
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Please be positive and constructive with your questions and comments.

QTPY USB Pads and Test Points

by whatamidoing on Sun Sep 06, 2020 7:58 pm

Hi,

I'm excited about the upcoming QTPY

What are the C, R & D test points for? Will there be a way of connecting USB to it without the plug? There are two nice big pads for ground and +5. It would be super awesome to have D+ and D- there too. Having a tiny microcontroller is awesome, but having to plug in a cable makes it over twice as long (e.g. from twitter here)

whatamidoing
 
Posts: 26
Joined: Wed Jan 30, 2013 4:49 pm

Re: QTPY USB Pads and Test Points

by tannewt on Tue Sep 08, 2020 2:57 pm

I haven't checked but my guess is R -> Reset, C -> SWCLK and D -> SWDIO. They would be used to load the initial bootloader.

tannewt
 
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Re: QTPY USB Pads and Test Points

by whatamidoing on Tue Sep 08, 2020 10:57 pm

That would make sense. I had a look more at the image. I'm not a PCB designer, but I couldn't see a easy spot to put a couple of USB data pads. Which is a shame.

whatamidoing
 
Posts: 26
Joined: Wed Jan 30, 2013 4:49 pm

Please be positive and constructive with your questions and comments.