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Desire DC - microUSB - internal resistance

Hi, I'm planning to build my own docking station and need some informations about the HTC Desire micro USB connection and the internal resistance of it!
The USB charger by HTC in Europe has 5V @ 1A max and I have original standard battery.
I've only one microUSB cable now (none to cut) and the connector is to little for my multimeter
Or is there a technical information data sheet for the Desire by HTC?! That would be awesome!!!
Thanks in advance for every hint!

I would definitely go for the official agreed specifications, as microusb is an EU standard agreed among manufactures. It would suggest that the pinout is also standardized and available. Google it.
Sent from my HTC Desire using XDA App

_stefans_ said:
I would definitely go for the official agreed specifications, as microusb is an EU standard agreed among manufactures. It would suggest that the pinout is also standardized and available. Google it.
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
Hi Stefan,
Thanks for your quick answer, I checked the USB specifications at www.usb.org already and also the pinout. But I don't want to damage the battery. It seems that there are a lot of different chargers for all the microUSB smartphones.
I will build my own charger, so I cannot buy a standard charger for microUSB - That's because there will be some extra features and It's also a project to learn something for university
An E-Mail to HTC is out - hope they give me some technician sugar
If not, I'll buy a cheap micro USB cable, cut it and let my multimeter do the work...

brianius said:
Hi Stefan,
Thanks for your quick answer, I checked the USB specifications at www.usb.org already and also the pinout. But I don't want to damage the battery. It seems that there are a lot of different chargers for all the microUSB smartphones.
I will build my own charger, so I cannot buy a standard charger for microUSB - That's because there will be some extra features and It's also a project to learn something for university
An E-Mail to HTC is out - hope they give me some technician sugar
If not, I'll buy a cheap micro USB cable, cut it and let my multimeter do the work...
Click to expand...
Click to collapse
if it helps at all i also use a micro usb cable from a Nokia without any issues so i would assume the pinout is the same and standard.

coriron said:
if it helps at all i also use a micro usb cable from a Nokia without any issues so i would assume the pinout is the same and standard.
Click to expand...
Click to collapse
Thanks coriron! That's good to know
If somebody needs service manuals: http://www.mikechannon.net/page1.html (nearly all HTC devices, but Desire and Nexus One)
If anybody has the servie manual for Desire/Bravo or even N1 pls post it here.
The main problem here is, that i don't know the internal resistance while loading the battery. Maybe i can only check the battery with my multimeter, but I think the battery is not the only thing connected to the microUSB while loading...so there is a risk to damage something...and I don't want to buy a new Desire
edit: and of course I want the maximum loading power - and there are chargers between 4-12,5V/0,2-1A - (I've seen so far)
edit2: Okay, found some infos about the chargers - when plugged into PC there is communication through the 2 data channels (D- and D+) - When loading on charger it can happen that there is no charging (because of missing information through data channels) - so one has to connect D+ and D- with Gnd - like in most third party usb chargers! Then it should work. Maybe that helps someone later...
edit3: If someone is interested - one possibility to build a charger (european symbols!):
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brianius said:
edit2: Okay, found some infos about the chargers - when plugged into PC there is communication through the 2 data channels (D- and D+) - When loading on charger it can happen that there is no charging (because of missing information through data channels) - so one has to connect D+ and D- with Gnd - like in most third party usb chargers! Then it should work. Maybe that helps someone later...
Click to expand...
Click to collapse
Already had this problem a few couple of weeks ago with the car charger i got for the desire. All i did was open the charger up and short the 2 data pins (middle pair) together, not to ground, and it works fine and i now get the full current instead of the usb limit.

why don't you plug a normal usb jack into the htc original charger and measure everything you want to know?
it should be cheap (you must have some unused cables around) and you have enough space to use the mutlimeter.

MHL HDMI adapter for Samsung S4

Anyone has any personal experience on this? I supposed that due to the 11 pin arrangement of the S4, most generic MHL HDMI adapters that you get from China wont work?
From what i've heard also from S3 forum, the official one from samsung also needs to be plugged in with an AC plug that can supply a good amount of current for the adapter to work?

wildpig1234 said:
Anyone has any personal experience on this? I supposed that due to the 11 pin arrangement of the S4, most generic MHL HDMI adapters that you get from China wont work?
From what i've heard also from S3 forum, the official one from samsung also needs to be plugged in with an AC plug that can supply a good amount of current for the adapter to work?
Click to expand...
Click to collapse
I have on genuine samsung that I bought for my old S3 and you have to plug it to the charger indeed. And most forums and reviews said the old or generic cables wont work since samsung has changed completly. Dont know if meanwhile China was able to replicated, though. Aliexpress has some deals where the sellers say it works but I wouldnt trust them.

I just got a Official Samsung MHL HDMI Adapter from shopandroid and it came with an adapter for the SGS4. So I would presume (and I could be wrong here) that IF you just buy the 11 pin adapter it should work. Here is a Google search for the one I received today http://cdn-store.smartphoneexperts.com/store_images/product_images/accessories/large/11843.jpg
As you can see the little USB part is the adapter needed for the S4
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As far as how it is working, it worked great and I was finally able to stream from my hard drive connected to my Asus router, into my phone and watch all the movies I have stored on it.
Sent From My Spiderman Themed I337

wildpig1234 said:
Anyone has any personal experience on this? I supposed that due to the 11 pin arrangement of the S4, most generic MHL HDMI adapters that you get from China wont work?
From what i've heard also from S3 forum, the official one from samsung also needs to be plugged in with an AC plug that can supply a good amount of current for the adapter to work?
Click to expand...
Click to collapse
I have one of this model and it works perfectly on my TV and in my S4.

Most mhl adapters will work with an 11 to 5 pin adapter. However most mhl adapters other than Samsung's new official are mhl 1.0 which is 1080p24. Meaning at 1080p you'll only get a capped frame rate of 24; terrible for gaming.
The S4 has an 11pin which is 2.0 compatible and allows your phone to use a 2.0 adapter without your charging wire and enables the HDMI on your TV to charge the phone (only if your TV is mhl supportive - most new ones are) otherwise it won't charge your phone.
Mhl 2.0 allows 1080p60. Meaning a perfect 60 frames at 1080p. Ideal for gaming, especially if you're using a controller and planning to use your phone as a gaming console. Definitely buy Samsung's 2.0 mhl adapter.
Gets the link to the official 2.0 adapter on Samsung's website.
http://m.samsung.com/us/mobile/cell-phones-accessories/ET-H10FAUWESTA
Amazon is the best deal I've found. Watch eBay, lots of 2.0 ripoffs that are really just a 1.0 adapter.
Sent from my SGH-I337 using xda app-developers app

I have an MHL adapter that I recently bought directly from Samsung. I can watch videos, but the image is very grainy. Any suggestions?
Sent from my Nexus 7 using Tapatalk

PSA - Right Angled USB OTG cables wont fit

just thought i would throw it out there that you can forget about using a right angled otg usb cable. i just unboxed my nexus player and was excited to hook up my ethernet adapter. grabbed my right angled otg cable (only 1 i have) and failed miserbly, stupid hdmi cable. thank god for prime.
just thought i'd throw that tidbit out there to maybe save others some time/frustration

thecrunked said:
just thought i would throw it out there that you can forget about using a right angled otg usb cable. i just unboxed my nexus player and was excited to hook up my ethernet adapter. grabbed my right angled otg cable (only 1 i have) and failed miserbly, stupid hdmi cable. thank god for prime.
just thought i'd throw that tidbit out there to maybe save others some time/frustration
Click to expand...
Click to collapse
Which OTG cable did you go for? I was planning on getting one soon.

i ordered this one. looks like it should fit. ill repost when it arrives with the verdict
http://www.amazon.com/gp/product/B00D8YZ2SA/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

thecrunked said:
i ordered this one. looks like it should fit. ill repost when it arrives with the verdict
http://www.amazon.com/gp/product/B00D8YZ2SA/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Click to expand...
Click to collapse
Thank you for the recommendation, I was meaning to buy one for some time, just slipped my mind a time or two !

was thinking OTG and hub , but what about a together ?
getting my nexus player tomorrow , and realized i only own right angle OTG , considering the below OTG/hub , i know it requires a power adaptor , but i am a junky for ports and power .
any owners see a issue with this ?
http://www.amazon.com/aLLreli®-Adap...ref=sr_1_1?s=pc&ie=UTF8&qid=1416286919&sr=1-1
manufaturer site
http://www.allreli.com/allreli-7-in...laxy-note-3-s4-s3-s2-xoom-archos-android.html

bkdg100 said:
getting my nexus player tomorrow , and realized i only own right angle OTG , considering the below OTG/hub , i know it requires a power adaptor , but i am a junky for ports and power .
any owners see a issue with this ?
Click to expand...
Click to collapse
A good powered hub is near a must for a device like the NP as there are so many uses for peripherals: hard drives, keyboards, mice, USB keys, Flirc IR controller, usb ethernet, etc. I highly suggest getting a decent powered hub with a lot of ports and a good track record. Monoprice sells a pretty good powered 7 port unit that has great reviews (I have four all over my home) and is relatively cheap:
http://www.monoprice.com/Product?c_id=103&cp_id=10307&cs_id=1030702&p_id=5328&seq=1&format=2
The hub you were looking at above is limited to 3 ports and doesn't come with an a/c adapter. I'd look elsewhere, imho.

So far I have had good results with a bus powered hub. Granted, it's not going to work for a bus powered power hungry accessory, such as an external hard drive. But it powers my wireless dongle for my F710 and a USB flash drive just fine.

I've noticed my Logitech K400 had some pretty bad range issues when the receiver was connected directly to an OTG cable, but when I use a powered hub it's working great. So, it may be worth considering, if you notice any problems with an unpowered setup.

Just want to update. This cord works fine

http://www.amazon.com/gp/product/B00B4GGW5Q/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I have this one and it works great. I broke my rightangled one trying to force it to fit with the hdmi plugged in...glad they are not expensive.

I bought my right angled USB OTG before I got the unit and also had some trouble getting it in there. The problem was that the power cord was in the way. I resolve it by simply plugging the USB OTG in first and then inserting the power cord.
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30 seconds with a razor blade, and I simply cut away the right angled part all together, and hot glued it into a straight otg

CrustyMcLovin said:
I bought my right angled USB OTG before I got the unit and also had some trouble getting it in there. The problem was that the power cord was in the way. I resolve it by simply plugging the USB OTG in first and then inserting the power cord.
Click to expand...
Click to collapse
You are lucky because yours bends towards the power cord and not the HDMI cable like mine did...there was no way of having both installed at the same time.

djwyman said:
You are lucky because yours bends towards the power cord and not the HDMI cable like mine did...there was no way of having both installed at the same time.
Click to expand...
Click to collapse
Ahh yeah... makes sense.
This is the one I purchased.
http://www.amazon.com/gp/product/B00GM0OZ4O/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

has anyone tried usb type c to hdmi cable accessories?

im trying to connect note 7 to my head unit via hdmi.
and i found this little bad boy
http://www.aliexpress.com/item/Type...66.html?spm=2114.13010208.99999999.261.jEk3Ct
would this cable work for galaxy note 7 ? if not, is there any cable that i can transfer to othr screen via hdmi? let me know thanks!

I bought this and no dice. Usb works but no hdmi. Also it won't charge and use USB at the same time. Luckily wireless charging still works.
No MHL on the note 7. Samsung dropped it in favor of miracast / screen cast. Luckily though a Chromecast will do the trick for 35$. Aside from that you could get a miracast dongle. Haven't used those yet so i cant speak on how well they work.
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Sent from my SM-N930T using Tapatalk

pyraxiate said:
I bought this and no dice. Usb works but no hdmi. Also it won't charge and use USB at the same time. Luckily wireless charging still works.
No MHL on the note 7. Samsung dropped it in favor of miracast / screen cast. Luckily though a Chromecast will do the trick for 35$. Aside from that you could get a miracast dongle. Haven't used those yet so i cant speak on how well they work.
Sent from my SM-N930T using Tapatalk
Click to expand...
Click to collapse
well i've been using smart view to connect note 7 via miracast, but it lags compare to wired connection. same with chromecast also. it connects fine, but lag is my main issue.

Weird.....im getting no lag. Movies play fine buffering from my phone using localcast app. Some MKV movies play a bit choppy but that's the codec I think.
It's a shame because 4x usb and hdmi on 1 adapter is awesome if it all worked. Also, the phone wont charge using it. I am able to wireless fast charge though.
Sent from my SM-N930T using Tapatalk

You tried installing the displaylink software on your phone and trying again?
I think these docs are displaylink certified. I have one in my office i will give it a go
---------- Post added at 04:05 PM ---------- Previous post was at 03:56 PM ----------
I just tried it on the dell branded usbc one i have spare in my office with the display like app installed it doesnt work for the display on the note7
It works on the older one with my note3 though

Again. Note 7 dropped MHL. There is no physical link from gpu to the USB port if I'm reading correctly. I wish it wasn't so.
Sent from my SM-N930T using Tapatalk

Wasn't HDMI or display port (not sure which) part of USB-c specs? If so, Note 7 usb-c port is out of spec, we need some software, or maybe it's HDCP, I don't think Display Port is certified for HDCP content, at least not by MS.

playing video and music is perfectly fine, but i need to connect this to my head unit and emulate touch as well from head unit. when note 7 is connected via smartview, theres about 1 second delay and its really annoying. so i was looking for a wired option instead of miracast....

evank418 said:
playing video and music is perfectly fine, but i need to connect this to my head unit and emulate touch as well from head unit. when note 7 is connected via smartview, theres about 1 second delay and its really annoying. so i was looking for a wired option instead of miracast....
Click to expand...
Click to collapse
Ah makes sense. My HU is a full blown quad core ( rk3188 ) android Radio with play access. I just tether and use the apps on the HU. I never tried the screen mirror app via USB but I will try later this evening to see if it lags
Sent from my SM-N930T using Tapatalk

Ugreen USB C hub

Ugreen USB C hub
Hi guys,
I recently got this nice hub, so I thought I could share it with you, because it is really cheap compared to Samsungs' original parts. I got it for around 20$ from someone who was selling it new, but they go for around 25-30$.
It allows you to use DEX mode and it has all the necessary ports -> HDMI output, DC input, several USBs, some even have ethernet ports and SD card ports, but I don't care about them.
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Here are some example links, but it can be bought from different stores:
Ugreen USB C hub - Ebay
Another Ebay link
Aliexpress Link
I hope some of you find this useful.

xchatter said:
Ugreen USB C hub
Hi guys,
I recently got this nice hub, so I thought I could share it with you, because it is really cheap compared to Samsungs' original parts. I got it for around 20$ from someone who was selling it new, but they go for around 25-30$.
It allows you to use DEX mode and it has all the necessary ports -> HDMI output, DC input, several USBs, some even have ethernet ports and SD card ports, but I don't care about them.
Here are some example links, but it can be bought from different stores:
Ugreen USB C hub - Ebay
Another Ebay link
Aliexpress Link
I hope some of you find this useful.
Click to expand...
Click to collapse
Thanks does it charge the phone while in use ? Let's say your using Dex ??

N1NJATH3ORY said:
Thanks does it charge the phone while in use ? Let's say your using Dex ??
Click to expand...
Click to collapse
Hi there,
Yes, it has a charging port and it works.
Cheers!

This thread is pretty old, but I'm finally looking at upgrading and have some questions about the Ugreen UCB C / USB 3.1 + HDMI Adaptor.
I'm looking at the USB C - 5 Port Adaptor here:
https://www.amazon.com/UGREEN-Adapter-MacBook-Matebook-Chromebook/dp/B077FZQS95
In the notes it says that
USB C PD fast charging is only for laptops but not for phones. Phones only support normal charging.
Do NOT recommend you charge phone through USB 3.0 port as USB port only can only offer max 1.5A current and will charge your phone slowly
So I'm trying to figure out, is this like a powered USB hub that needs a PD brick to power the hub and then the hub powers the tabled (with 1.5A max), and separately powers the HDMI adaptor, UCB 3.1 devices etc., or is this a power-pass through that powers the tablet (slow) and then the tablet powers the USB devices?
In other words, is there an advantage to buying a $20-30 PD wall brick to power this hub, which the tablet doesn't support, or am I as good as I'm going to get with the original Samsung Lightning charger that came with the tablet?
Thanks,
Joe

Another possibility ...
https://www.amazon.de/gp/product/B07PWMDTFF/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
* charging OK
* DeX OK, you can use mouse + keyboard, or phone as trackpad
* HDMI video / audio out OK (or you can choose audio out via phone jack, sounds better)
* card reader
* NEEDS POWER SUPPLY!

PetrSP7 said:
https://www.amazon.de/gp/product/B07PWMDTFF/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
* charging OK
* DeX OK, you can use mouse + keyboard, or phone as trackpad
* HDMI video / audio out OK (or you can choose audio out via phone jack, sounds better)
* card reader
* NEEDS POWER SUPPLY!
Click to expand...
Click to collapse
So this is interesting in that the British version has a warning:
Please read carefully before use:
Use the original AC adapter of your device to charge your device via the USB-C Power Delivery Port on this hub
The Tab S4 (my device) original charger is NOT a 100W PD charter it is a Samsung Lightning Charger not quite QC 2.0.
Again, it isn't clear to me whether these PD powered hubs are acting as pass through for the power to the tablet/phone, and then the tablet powers the peripherals that are plugged in, or if it is a powered hub, that independently powers the peripherals and the tablet/phone - and is smart enough to power the tablet/phone with QC 2.0.
The UGREEN adaptor implies that PD is downconverted to QC 2.0, but doesn't say anything about the peripherals. This FLYLAND hub says not to use a PD charger at all.
This is So much more complicated than it should be!
Joe

I am using Tp-Links usb 3 hub, it works great. It uses external power source and its not draining too much power. Ugreen has only 10cm long cable. So pros and cons.
---------- Post added at 07:42 PM ---------- Previous post was at 07:41 PM ----------
Ugreen has good solutions also

I have used a number of different USB Type-C docking station with my Note 8 N950N and they all work with Dex Mode. It even worked using a official Lenovo ThinkPad Type-C dock station.

This update continues:
I've been using Hub Ugreen CM511 for 3 months. I connect (in addition to my laptop) monitor, speakers, mouse and keyboard, sometimes a flash drive. I'm satisfied, each input works, file transfer without lag and it doesn't heat up. Any questions?