Database Develop

Dell Streak PDMI connector modded for mini USB

Sorry if someone else already posted this somewhere... Looks like they modded the Streak PDMI connector into a mini-USB adapter.
http://www.streaksmart.com/2010/08/dell-streak-pdmi-connector-modded-for-mini-usb.html
-ag

Good idea but would be nice to see the inside and what wires soldered to what

I checked out John's website over at http://www.linuxslate.com, and while I don't have time to look at everything now, it looks like there's a lot more info there, including pinouts and pictures the board.
I'll read through everything later, and may have to order another cable from Dell to give it a try.
ag

Instead of cutting up dell cords, anyone have a clue where we could get raw pdmi connectors?

I don't really see the point - you've still got to plug in the PDMI connector so what's the advantage?
Sent from my Dell Streak using XDA App

I don't really see the point - you've still got to plug in the PDMI connector so what's the advantage?
Click to expand...
Click to collapse
Well, you have a point.
If you plug in a mini USB to USB-A cable into the adapter I made, you end up with exactly what you had in the first place (With the Dell Cable): PDMI to USB.
Furthermore, There's the cost:
Their way: Dell Cable: $20
My way: Dell Cable to destroy + Something to get the mini Female USB + mini USB cable + labor = >> $20
But, there are 2 points:
1. I have shown that the Pin-out of the Dell implementation of PDMI is known. USB breakout is just a simple demonstration. Manufactures can built lots of different breakout cables and docks.
2. It is far easier to carry the tiny adapter that I made than it is to carry the Dell USB cable. When I already have standard mini USB cables at home, in each car, and a couple at work, I really don't want to have to buy half a dozen $20 Dell cables, just to have one at each location I might need it. I can connect the little adapter I made to my key chain, and always have it with me, while hardly knowing I am carrying it. My little adapter is far more durable than a cable (especially since the Dell cables seem rather stiff).
He's another what's the point question:
What's the point of having Audio on the PDMI when there is already audio on the 3.5mm jack?
If I had a Audio/USB breakout adapter, I can make both connections with one action (such as when getting in the car.), and I don't have wires sticking out of 2 sides of the device.
Perhaps if you wanted to use your Sony Walkman Cassette Player in your car instead of it's built-in 8-Track deck, such arrangements were acceptable, but I was under the impression we had made some progress since then.
(For the record, I'm not old enough to have actually done that.)

Just my opinion, but I'd rather carry around an adapter that I could plug any one of my numerous USB chargers into (wall, car, etc...), than buy new chargers from Dell (especially at the prices they're charging for them).
-ag

I also would much rather have one adapter as shown except perhaps a micro-usb on the other side in addition... If we are going to have an adapter, make it multifunctional.
If we want to get really crazy, put a micro switch between pins 2&3 on the USB (or whatever the pinout is for data in/out so we can use any USB power supply, but open it for syncing if necessary

Ok, point taken!
So put me on your advanced order list for a micro adaptor ... I left my cable at home today and was out of power by 1 pm.
Sent from my Dell Streak using XDA App

Another advantage if you could actually buy just the raw pdmi connector form some kind of electronic component whole saler like digikey or newark or something, you'd probably be talking about something that costs 2 bucks to make instead of paying 20 for a cord.

I bought the slacker G2 dock and tested i with the streak. Initially, nothing would work, no charging, no audio output. So i decided to take it apart and check the pin out.
So opened it up, took the board out and checked the usb pins, it was correctly mapped to the right pdmi pins, was dumbfounded why it did not work.
Then I just plugged the board in to the streak and lo and behold it started charging. When it was in the dock, I think the streak was not getting seated properly on the pdmi connector, because of the thickness of the plastic top cover. The headphones and line out ports do not seem to work though, I will have to do some more trouble shooting.

Keep us up to date on this.
I am VERY interested in this for desktop charging.
this would be HUGE, since if you don't need the HDMI out, why pay for $70 at Dell?!!

If there was some way to create an adapter that slid in flush with the phone, that would be perfect. Nothing extra to carry, just snap it in and you can use any mini/micro USB cable.
Get on that and let me know how it's coming along.

So did I see somewhere that the Samsung Galaxy Tab will be PDMI? If so Here is an accessory from it to USB http://www.engadget.com/2010/08/30/samsung-galaxy-tab-accessories-may-include-bluetooth-stylus-and/

Bohemian said:
So did I see somewhere that the Samsung Galaxy Tab will be PDMI? If so Here is an accessory from it to USB http://www.engadget.com/2010/08/30/samsung-galaxy-tab-accessories-may-include-bluetooth-stylus-and/
Click to expand...
Click to collapse
now that will be very handy... keep one of those handy and most cable issues will go away

I saw that and the accessory port looked like a PDMI - I hadn't read anything, tho.
Perhaps we will see more as more devices have the plug.
perhaps Dell is on the leading edge more than we thought!!!

PDMI has been around for a couple of years but no one has used it until now, the Samsung connector certainly looks like a PDMI but it hasn't even been released yet so there's no way to tell for sure.

I saw that accessory for the Tab on engadget.
They copied me !!

Raw PDMI connector Part No.
DeathOfAllThings said:
Another advantage if you could actually buy just the raw pdmi connector form some kind of electronic component whole saler like digikey or newark or something, you'd probably be talking about something that costs 2 bucks to make instead of paying 20 for a cord.
Click to expand...
Click to collapse
I asked the dude who made his own PDMI to USB adapter if he has seen some markings inside the connector he used, no reply.
Could it be the Molex (or whoever is the manufaturer) part no is mentioned in the official PDMI specs?

I checked DigiKey and Newark for "PDMI" and got zilch.

[MOD] microUSB to Tab dock adapter (one of a kind!)

I finally received my spare Tab usb cable and a few microUSB SMD sockets and have successfully hacked them together to make a very portable adapter so that all of my existing microUSB cables work on the Tab as well. No more having to carry a different cable with me!

Nice work. How did you mount the female micro so neatly?
Sent from my SGH-T849 using XDA App

A video of it functioning would be awesome. I am interested in making this as well. I actually want to create a full USB adapter. I know there is a schematic of the cable and what each one does. Its just a matter of wiring it up right. Perhaps you can make a how-to? what if you plug a USB thumb drive using a USB to micro USB adapter. Would that work?
From the Tab.
www.twitter.com/ayman07

I don't know if it would do anything with a thumb drive or anything else that requires a host port. For a microUSB socket, there are 5 pins, of which 1 is unused when you wire it to a regular usb dock connector like this one. I haven't looked at the pinout posted, but it's possible that 5th connection is to toggle/enable host mode on the Tab. If I get a chance I'll plug in an external drive and see what happens.
As to how I shoehorned the micro socket into the dock port connector, it just required an X-acto knife and some super glue. Soldering on those tiny smd pins is a pain, so if I make another, I'll etch a small pcb and mount it that way.

Great work! Do you have any pictures of the inside of the adapter?

Unfortunately no. I will take pics of the inside of my next project, which is to make a dock connector adapter that'll break out into a microUSB port alongside of a miniHDMI (kind of how Samsung should've done it to begin with). I'll definitely snap some pics then, and post up the Eagle files if anyone's interested.
EDIT: Looking at the pinout thread, it looks like the HDMI dock has all sorts of stuff in there that I had assumed were inside the Tab. I'll probably make another microUSB adapter so I can prototype the pcbs.
EDIT2: For USB On-The-Go, it looks like the unused pin 4 (ID) just needs to be grounded to pin 5. I'll test that too.

Wow, this looks great. Have you thought about making a few spares and offering them up for sale? I would definitely be interested. Let me know

I'm currently trying to track down a supplier of the 30-pin connectors. Seems a very daunting task at this point, since I can't speak Chinese, and the majority of the component suppliers do. It wouldn't be cost-effective to purchase full usb cables with the connectors just to harvest the connector off of them. Also, to even test the OTG functionality would require a dock connector with all the pins (or at least pin 13 + the usb ones); most of the usb charging/sync cables only have 7 of the 30 pins. The only connector I know of that has pin 13 is from the HDMI dock, and that's an expensive way to test.
So once these connectors are more readily available, I'll look into making a batch.

[GUIDE] DIY smallest Micro USB OTG to USB Adapter

Update: v.2! (half a penny)
Inspired by this video/OTG, pass to 0:47. Which I couldn't find one to purchase. This L design when plugged in is a bit smaller than a penny. No welding needed! Use (female USB for game controllers, mouse, ect). Designed with a case-on in mind.
======
You'll need 3 parts for hardware. Micro USB OTG, Micro SD reader, ofcourse Micro SD card and a software of your choice to run it. I don't root so I'm using Nexus Media Importer.
Be safe and wear gloves. You don't want to get hurt for this mod.
======
Step1: Cut in the middle of the left or right side of Micro USB OTG. Be careful, use glove on the hand to hold it down. (note: the OTG link that i provided is the exact one that I used to mod, but you can find the cheapest parts from Amazon or Ebay, ect.).
Step2: Peel out the inner part of the OTG.
Step3: Cut the part closer to the Micro USB completely off (with wires still intact). Carefully peel the wires to the far end of the USB female. Then cut the rest of the plastic off like in the picture.
Step4: Turn the Micro USB end to make a L shape like in the picture. I used glue gun to clued it together. You can use electrical tape if you like. Enjoy!
**I'm not holding reliable for any injuries or broken parts from this mod, do it at your own risk**
This is the original size of the device when it's plugged in, it's about 3 size of a penny in length.
Step1-3
aaaa
Step4
====================================================================================
Version 2 still retained female USB for mouse and game controller or a case in mind.
==========
You'll required soldering, glue gun or electrical tape. (note: this version is a challenge to make. If you think you can solder the wires into the small spaces on micro USB's bins then proceed or you can make version 1 which required no soldering)
==========
Step1: Strip micro USB and female USB completely. (any spare female USB from old devices will do. Make sure you have the right micro USB end like in the diagram if you decided to get a spare)
Step2: Measure the wires as needed from micro USB to female USB. Then pre-cut the outer layer of the wires so you can bend at 90 degree angle with ease when wiring the wire along the sides. (careful don't cut the wires inside). Next, strip a few millimeter from both ends of the 4 wires.
Step3: I suggest to lay the 4 wires on top; along the micro USB and solder it in the pins. (though I didn't realized this obstruction was a big deal until it resulted in a bump on my model when wiring it downward). Curve your stripped end of the wires for easy soldering. A trick I used to solder the wires to micro USB is putting a thin foil paper in between 2 pins. After you're done, remove it and repeat until you're done.
Step4: Lay your micro USB on top of the solder point of the female USB at 90 degree to shape the L. (make sure no metal part of the micro USB touches the female USB sholdering point. You can lay it on top of the female USB but it will add a few millimeter thickness). Follow the diagram to solder all wires to the female USB.
Step3
aaaa
v.2 when plugged in it's half a size of a penny. You're seeing USB plugged into the OTG with microSD inside.
**Credit to redgreenlaser for diagrams**

Thanks for the "how-to", Capt.PP.

Thank you, with your suggestion, and pictures, I can also put the USB behind the tablet as a U, and maybe make it smaller without the USB (male and female) only the card reader

I like it!
It's quite similer to the one I made:

Aleemz said:
I like it!
It's quite similer to the one I made:
Click to expand...
Click to collapse
Cool, Aleemz, how did you make yours?

If you want to make it smaller and you are going to the trouble of handsoldering and hot glueing, you can just get the Micro USB Plug
http://www.digikey.com/scripts/dksearch/dksus.dll?vendor=0&keywords=609-4051
Remove the USB shield, solder the Plug Directly to the USB traces, and Hot glue around it, you can reduce the size by half (maybe even more)

Maturola said:
If you want to make smaller it and you are going to the trouble of handsoldering and hot glueing, you can just get the Micro USB Plug
http://www.digikey.com/scripts/dksearch/dksus.dll?vendor=0&keywords=609-4051
Remove the USB shield, solder the Plug Directly to the USB traces, and Hot glue around it, you can get reduce the size by half (maybe even more)
Click to expand...
Click to collapse
Cool.
Maybe you should make some and sell them to those of us who don't have the necessary skills/gear/time...

ddlooping said:
Cool.
Maybe you should make some and sell them to those of us who don't have the necessary skills/gear/time...
Click to expand...
Click to collapse
I'm trying to do just that with my Indiegogo campaign.

Maturola said:
I'm trying to do just that with my Indiegogo campaign.
Click to expand...
Click to collapse
Nice one.
I'd rather use a USB flash drive but I've contributed nonetheless.

DIY smallest Micro USB OTG to USB Adapter
Capt.PP said:
This is the original thread but it doesn't show how to make one. The purpose of this thread so I can do Q&A more direct without colliding with other topics in the original thread.
Click to expand...
Click to collapse
I think that, if I were to make one of these, I would make it in a "T" shape after removing the male and female USB connection, with the opening for the micro sd card facing in whatever direction seems best, so long as the card and its holder are parralel to the side of the device that the micro USB port is on. That way the whole thing would stick out no more than 5/16th's to 3/8th's of an inch when plugged in to the micro USB port and the protruding top cross part of the "T", that being the part with the micro sd card, would act as a grip for removing the device from the port.
(If that makes sense.)
k.

kickofthecat said:
I think that, if I were to make one of these, I would make it in a "T" shape after removing the male and female USB connection, with the opening for the micro sd card facing in whatever direction seems best, so long as the card and its holder are parralel to the side of the device that the micro USB port is on. That way the whole thing would stick out no more than 5/16th's to 3/8th's of an inch when plugged in to the micro USB port and the protruding top cross part of the "T", that being the part with the micro sd card, would act as a grip for removing the device from the port.
(If that makes sense.)
k.
Click to expand...
Click to collapse
You also have to look at cost effective here. The parts that was used only cost $1 for OTG, 30 cents for small USB, minus the Micro SD card. Though i'm not recommending 30 cents for small USB (they didn't clued it and harder to get the Micro SD card out) compared to the one above I recommend in the link.
The L design flushed with the screen surface and thinner compared to the bottom surface or a device as a whole. It prevented from accidentally snag the OTG when swyping on the screen. It's very easy to plug or unplug since you have a penny side in width (when you DIY you can add grips) and 2 penny side in length if you have a big thumb.
The T design, if i understand you correctly, you want to stick out above the screen a bit so you have grips to pull it out? I can ensure you the L shape have no problem of unplugging. Though you eliminated the female/male USB but it still lay hidden on the edge bottom of your device. Instead of buying new parts (may cost more) you can use the OTG I recommended to strip out all the white plastic to make it even smaller as you want to reduce in length when laying on the edge bottom. Cheer.

Aleemz said:
I like it!
It's quite similer to the one I made:
Click to expand...
Click to collapse
Where did you get your inspiration. Great minds think alike.

Cool I'll tried one

I am going to just try soldering/wiring a micro-usb jack directly to a 32GB flash chip from a torn apart flash drive. Still waiting for parts to come in the mail. Here is a pretty good wiring guide that should help anyone looking to do the same.
http://tech2.in.com/how-to/accessories/how-to-make-your-own-usb-otg-cable-for-an-android-smartphone/319982
You could probably do the same thing with a micro-sd hard adapter.
Also another idea : Build it directly into a case, much like this Galaxy Nexus Battery Case
http://www.sackstark.com/store/product_info.php?currency=USD&cPath=12&products_id=88&language=en

Hey, I'm not very electronically inclined. Could I pay someone to make and ship me one of those "plug" OTGs? I have a 3" cable one, but I LOVE that little plug.
I'd even order one from Hong Kong and wait for it
Thanks

This one looks pretty good, for those who want it as un-obstructive as possible. I ordered one but will have to wait for it to see if it works fine.
http://www.ebay.com.sg/itm/Right-An...006572?pt=PDA_Accessories&hash=item27ccd180ac

Thanks, kenkiller, please let us know how you get along.

kenkiller said:
This one looks pretty good, for those who want it as un-obstructive as possible. I ordered one but will have to wait for it to see if it works fine.
http://www.ebay.com.sg/itm/Right-An...006572?pt=PDA_Accessories&hash=item27ccd180ac
Click to expand...
Click to collapse
Gonna buy two hope they work.
Sent from my Galaxy Nexus

kenkiller said:
This one looks pretty good, for those who want it as un-obstructive as possible. I ordered one but will have to wait for it to see if it works fine.
http://www.ebay.com.sg/itm/Right-An...006572?pt=PDA_Accessories&hash=item27ccd180ac
Click to expand...
Click to collapse
Oh snap, they read my mind. I finished v.2 of Micro USB OTG to USB Adapter but very similar to this last week, but since I sold my phone I couldn't take pictures and post DIY v.2. From the look of this, it seem my v.2 is even smaller.

Capt.PP said:
From the look of this, it seem my v.2 is even smaller.
Click to expand...
Click to collapse
That'd be cool.

(Slightly) Different Micro USB Port??

So I have a cheap MicroUSB to USB Host dongle I have used with several of my phones and tablets, Including my SGS3 and Nexus7. It physically will not go into the port on the Note 2! I is like the little plastic flat pin thingy in the port is too wide for the slot inside the cable. I can't tell for sure. My other MicroUSB charge cables work fine, though. I don't get it.
It goes in part way but not fully connecting.
Kinda hard to see in this pic, but there seems to be an ever-so-slight difference in shape of the connector. Could have something to do with the cheap, generic quality of this adapter.

Update:
It's easier to see if you stack the Note 2 on another device so you have both ports next to each other. The plastic part that holds the USB pins inside the port (the "male" part if you will) is definitely wider than the one on the Nexus 7. May want to keep that in mind when ordering accessories. Does anybody have a confirmed-working MicroUSB to USB Host cable/adapter?

Hard to tell on my phone, but that black cable kinda looks like mini HDMI.
Sent from my SPH-L900 using Tapatalk 2

Skripka said:
Hard to tell on my phone, but that black cable kinda looks like mini HDMI.
Sent from my SPH-L900 using Tapatalk 2
Click to expand...
Click to collapse
It's definitely MicroUSB and I have used it with my SGS3, Nexus 7, and several other devices. It just won't fit in my Note 2.

I have this cable and it works fine
http://www.monoprice.com/products/p...d=1083314&p_id=9724&seq=1&format=1#largeimage

http://www.amazon.com/gp/product/B00932N46S/ref=oh_details_o01_s00_i00
I bought it to use with my broken Nexus 7 but worked seamlessly with my Note 2.

I upgraded to the Note 2 from an HTC EVO, and the EVO's charging cable would not fit in my Note 2. Blew my mind. It's the only micro USB that hasn't fit it so far.

zack2491 said:
I upgraded to the Note 2 from an HTC EVO, and the EVO's charging cable would not fit in my Note 2. Blew my mind. It's the only micro USB that hasn't fit it so far.
Click to expand...
Click to collapse
Interesting. I upgraded from an EVO 3D and the "official" micro usb cable that came with my EVO 3D worked fine with the Note 2.
The Note 2 does seem to have a deeper socket which makes it so some micro USB cable won't stay put in the socket all that well because the part that grasps the tip is a tick deep in the socket.

to pass the time i took the 11pin micro USB plug apart...
heres how they get 11 pins into a 5 pin hole...

Any place to buy the official Nexus 7 USB Cable by itself?

I have another microUSB cable but it slips out sometimes, and doesn't charge the Nexus 7 unless you hold it at certain angles. If anyone can point me in the direction of getting a replacement ASUS micro USB cable like the one that comes with the Nexus 7, or even one that people have found is a snug fit with their devices,and isn't prone to falling out, please let me know. Thanks for the help.

You don't say where you are but if you can find something like this you should be fine. http://www.amazon.co.uk/LINDY-Degre...26&sr=8-3&keywords=micro+usb+lead+right+angle
Good length and the right angle plug make it less likely to catch on things.

Troute,
Do you use this with your Nexus 7? Because I've heard that some microUSB cables' pins on the connector aren't long enough to reach into the Nexus 7's and that's why the microUSB cable I'm using now is so flimsy. Do you know anything about that?

Theoretically It must work, because the OTG cable we are using is micro USB B to USB female.
I think some people must got their cable from a bad store that cause the defect you're talking about

I use whatever lead is handy and have had no problems but I avoid buying cheap chinese ones. Problems can be caused by a combination of badly made/loose plug and a loose socket