[57north-discuss] [57north-announce] 2017-06-27 Open Tuesday!

[tj]

On Tue, Jun 27, 2017 at 10:03:08AM +0100, Tony Travis wrote:
> On 27/06/17 09:48, tj wrote:
> > On Tue, Jun 27, 2017 at 09:45:00AM +0100, tj wrote:
> >> On Tue, Jun 27, 2017 at 09:20:55AM +0100, Dave Hibberd wrote:
> >>> If you're new, I'd suggest you bring a laptop, and perhaps a project you
> >>> want to work on.
> >>>
> >>
> >> I shall be in, I will be fielding endless questions on my new tiny
> >> laptop and speculating about mqtt and micropython.
> > 
> > Also, does anyone know if power only usb a to usb c is possible?
> 
> Hi, Tom.
> 
> USB-C PD (Power Delivery) requires negotiation about the voltage and
> current to be supplied. I've bought and sent back two USB-C hubs that
> failed to negotiate PD properly with my HP Pavilion x2, using the HP
> USB-C charger supplied with the laptop. Belkin do a cable:
> 
> > http://www.belkin.com/uk/p/P-F2CU029/
> 
> However, I doubt this would negotiate properly with my Pavilion x2.

I guess I have two questions, is usb a->usb c power only allowed in the
spec (I suspect no)

Can I get a cable/device/dongle/thing that will do this for me. I am
think of a micro and two bus chips so it can negotiate correctly, but not
actually do data. Someone must be working on this.

- [tj]