Mini USB VGA adapter pinout

tonyp12

A VGA connector is pretty big and clunky.
In the automotive DVD entertainment they went with mini-usb and the cables are still easy to get hold of.

http://www.aliexpress.com/item/Good-quality-Free-Shipping-VGA-to-VGA-cable-mini-5P-line-moves-DV-cable-Mini-USB/32263187427.html
Order max 6 as to get free shipping, my order toke about 2weeks to arrive.
I tested the pins and found out this pin out. (note Shield is Ground, put vias on shield pads to help holding it down )

Connector in the picture is the: UX60SC-MB-5ST and is available in Diptrace
http://www.mouser.com/Connectors/USB-Connectors/_/N-88hmfZscv7?Keyword=UX60SC-MB-5ST&FS=True&Ns=Pricing|0
Step file: http://www.hirose-connectors.com/connectors/InproductionSearch.aspx?T2=UX60SC-MB-5ST

jmg

tonyp12 wrote: »

A VGA connector is pretty big and clunky.
In the automotive DVD entertainment they went with mini-usb and the cables are still easy to get hold of.

I've seen these - Is this pinout reasonably standard ?

tonyp12 wrote: »

..... (note Shield is Ground, put vias on shield pads to help holding it down )

Connector in the picture is the: UX60SC-MB-5ST and is available in Diptrace

Personally, I avoid the pure SMD USB connectors like the plague, and use the ones with 4 Pin-thrus for maximum strength - and usually expand the land and paste areas as well.

I've even seen some Eval boards use a totally pin-thru connector. (9 holes)

Micro USB appeals as a now standard for chargers, but as more emerge I'm not that impressed with their reliability.
They may have made a bad choice there. Too small and flimsy ?

tonyp12

I think this is the standard, I googled it and there is no picture of the pinpout anywhere so that is why I ordered a few.
Diptrace and mouser have many UX60 versions, some with posts and also shield through pins

With micro-usb I always go with top mount version as when connector is placed (inverted) that part of shield housing is broader and should give more support.

Phil Pilgrim (PhiPi)

Shield as ground is a bit dodgy. For a shield to be effective as a shield, it should be connected at one end only. It might have been better to dedicate a pin to ground and combine the two syncs, or put one of the syncs on green. Of course, not all VGA monitors could deal with something like that.

Still, though, I like the concept of getting away from that huge DB9.

-Phil

WBA Consulting

Clever idea. I know a microscope ringlight manufacturer that uses HDMI connectors and cables for the connections between the light and controller. Robust, lots of lines in a small diameter cable, and cheap.

If you are going for small and space saving, I just did a prototype using the Molex 47642-001 Mid-Mount Micro USB connector. Your PCB needs to have a cutout for it to fit properly, but the finished board looks pretty sweet and the connector installation is much stronger than a full SMT version. It was placed using pin-in-paste methods, meaning that solderpaste was also printed over the 4 mounting holes. After reflow, the TH tabs were soldered with about 70% fill. Can't show a pic of the prototype (under an NDA), but here is a screenshot of the board layout and connector.

http://www.molex.com/molex/products/datasheet.jsp?part=active/0476420001_IO_CONNECTORS.xml&channel=Products

Digikey PN WM1398
http://www.digikey.com/product-detail/en/0476420001/WM1398CT-ND/2350884

tonyp12

There are HDMI to D-SUB HD15 cables (or its is the other way around) they of course don't convert but I think they are used to make your PC video card secondary hdmi port in to a vga port if the video card support that.
http://www.aliexpress.com/item/Hight-quality-6FT-1-8M-HDMI-To-VGA-Cable-male-to-male-Video-Adapter-For-HDTV/32238681634.html
I guess I have to order a few to get pinout on those, should be plenty of gnd wires for it to use.

But when your products video-out port is a female hdmi connector , they are gone connect it to a TV's hdmi port. a lot of confusion
And it's bigger than mini-usb nearly back to vga connector size we tried to avoid in the first place.

Tubular

Interesting. If you accidently plug a standard usb mini cable in, where does the +5v end up? On the H or Red pin?

If its the H-pin perhaps a relatively large (compared to 240 ohm) series resistor might protect the prop. Or a clamping diode

Peter Jakacki

I've always hated those bulky VGA connectors when all you need is 5 pins and an optional shield. So I've used pin headers and it's pretty simple with those "Dupont headers" from ebay, either as a single 5-way or an dual 4-way. So the other end of the cable may terminate into a female or male VGA as required. So the shield being the ground is not really a problem for these short lengths.

tonyp12

>where does the +5v end up? On the H

yes pin1 (the round dot on pcb), I would use 470ohm and a 3.6v zener between the prop-pin and resistor for safety.