Well,  today has been a disaster. After hunting around I found a couple of connectors and 12V power supplies but no joy. I haven’t got the board to boot. I think the first connector was too hollow and the 12V (the internal connection of the plug wasn’t touching the internal pin of the socket on the board. With a few other tries I was able to get connectivity but the board just vibrated when powered up. I did briefly get a blue or purple LED to momentarily light up. At one stage touching the board under the power socket burn my finger! I have logged the issue with Arrow. Sad smile

Also Dragonboard v RPI2


Just a note: The board clearly says that the 12V rail is the internal connection and GND is the external connection which is the default for most plug packs.

The connector is a coaxial power connector:

A coaxial power connector is an electrical power connector used for attaching extra-low voltage devices such as consumer electronics to external electricity. Also known as barrel connectors, concentric barrel connectors or tip connectors, these small cylindrical connectors come in an enormous variety of sizes. .. Wikipedia


Dragonboard v RPI2

On a the Microsoft IoT Forum the question was asked, how does the Dragonboard stack up against the Raspberry Pi 2 , especially in the Windows 10 IoT-Core context. My brief answer is that its like comparing chalk and cheese. No comparison!

The Microsoft IoT Forum post does a pretty good comparison of many of the raw features so  I won’t plagiarise that here. I’ll do my own at some stage. The thing is that the RPI2 is a maker or hobbyist target. The Dragonboard once it gets its full approval later this month represents a device that you could use in a Consumer or Industrial device. You wouldn’t use a RPI2 in a commercial production. Remember that Qualcomm make a large proportion of the phones currently available, or at least the main components. Also I have seen a video captured with one when zooming into map data and going street view and the frame rate is excellent. The board has a function GPU (in the IoT-Core context). I would expect that any GPIO, UART etc features that are incomplete will quickly be driven up to speed, I will test these when I get a working board. Hope this helps.

Others please chime in with your opinions, thx.