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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.

USB mini to Regular Female USB ?

I just recently bought this adaptor for my TF700.
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.
It works great for me as a Mass USB reader and wireless mouse or keyboard ... BUT ... the way it plugs into the big slot on the bottom of the tablet is not very safe. With the USB stick plugged into it, it sticks out like 4 inches.
I am afraid it is going to break off soon ! I am looking for a cable to do the same thing, but would plug into the mini usb port on the side of the tablet, not the big connector at the bottom. Is there such a cable for this device ?
I have a mini to regular USB for my Kindle Fire but the mini port is different then the one on the Asus.
I know this is a question, but I think it is more of an accessory related item ... so I hope it's in the correct forum :fingers-crossed:
Thanks for any replies !
Ps. I do not have the docking station.
.

Ah,
Bought one of them things too.
Hardly ever used it...I searched for a dongle cable for a couple of days then gave up.
I'll probably blow more money on the $90.00 connect dock if I can find one.
Seems like if we want have a connection options your kind of cornered by Asus.
Maybe the keyboard dock is the way to go

USB Adapter
Thats OK said:
Ah,
Bought one of them things too.
Hardly ever used it...I searched for a dongle cable for a couple of days then gave up.
I'll probably blow more money on the $90.00 connect dock if I can find one.
Seems like if we want have a connection options your kind of cornered by Asus.
Maybe the keyboard dock is the way to go
Click to expand...
Click to collapse
The subject has been brought up previously. With the capability of screen rotation, all you have to do is rotate the tablet 180 degrees so it sits on top.

brinnonbob said:
all you have to do is rotate the tablet 180 degrees so it sits on top.
Click to expand...
Click to collapse
Good thinking that is one solution.
I'm afraid it put's too much bind on the tablets plug.
Stress and fear of damage are the main reasons I rarely use this.

What mini USB slot? That's a micro HDMI slot, and it's output-only...
"Pad:
1 x 2-in-1 Audio Jack (Headphone / Mic-in)
1 x micro HDMI
1 x Micro SD Card Reader"
The only USB connector in this tablet is in the dock.

Has anyone tried to use the charger cable and a USB gender changer?

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

usb c to usb 2.0 micro-b cable

Does anyone have any suggestions. I would like to hook my 6P to a Chord Mojo

Did you find anything which does this?
Can I ask a question: I'm looking at getting a Chord Mojo too but sometimes I just want to listen to Spotify - I'm pretty sure it'll work, but can you confirm?

Martyn.h said:
Did you find anything which does this?
Can I ask a question: I'm looking at getting a Chord Mojo too but sometimes I just want to listen to Spotify - I'm pretty sure it'll work, but can you confirm?
Click to expand...
Click to collapse
Unless you're a premium spotify user, using an expensive DAC for low quality music is not ideal.
subguy812 said:
Does anyone have any suggestions. I would like to hook my 6P to a Chord Mojo
Click to expand...
Click to collapse
There's no cable as of now(only bulk cables found) but there's a workaround that I posted on reddit https://www.reddit.com/r/Nexus6P/comments/4c5cjx/portable_usb_dac_lovers_which_cable/
Here's the pic of my setup: http://i.imgur.com/hQ3M4Rw.jpg | http://i.imgur.com/syHds7S.jpg

SpiritBreak3r said:
Unless you're a premium spotify user, using an expensive DAC for low quality music is not ideal.
Click to expand...
Click to collapse
Yeah - no way I want to listen to low quality music (or ads) through a nice amp/dac and some pretty nice IEMs
SpiritBreak3r said:
There's no cable as of now(only bulk cables found) but there's a workaround that I posted in reddit https://www.reddit.com/r/Nexus6P/comments/4c5cjx/portable_usb_dac_lovers_which_cable/
Click to expand...
Click to collapse
Ah sweet - thanks for that. Also I found this in the meantime - no angular connectors but it seems to be from a reputable company and isn't a meter long! http://www.amazon.co.uk/TECHGEAR®-Type-Micro-Cable-30cm/dp/B016A16D94
SpiritBreak3r said:
Here's the pic of my setup: http://i.imgur.com/hQ3M4Rw.jpg | http://i.imgur.com/syHds7S.jpg
Click to expand...
Click to collapse
Oh sweet - that cable looks much better than the one I posted. How difficult was it to go in and hack that together?

Martyn.h said:
Oh sweet - that cable looks much better than the one I posted. How difficult was it to go in and hack that together?
Click to expand...
Click to collapse
I took around 15mins, considering the fact that I'm an Electronic Engineering Grad, I still made a shabby connector.

not sure if it's immediately available, but monoprice just announced a new USB c line yesterday that includes a c to micro b

kellybrf said:
not sure if it's immediately available, but monoprice just announced a new USB c line yesterday that includes a c to micro b
Click to expand...
Click to collapse
http://www.monoprice.com/product?c_id=103&cp_id=10303&cs_id=1030319&p_id=14949&seq=1&format=2

subguy812 said:
Does anyone have any suggestions. I would like to hook my 6P to a Chord Mojo
Click to expand...
Click to collapse
Is this Type-C to MicroUSB OTG adapter + MicroUSB to MicroUSB OTG cable?

Hi MartynH - I'm in a similar boat (moving to a USB C phone) but don't to lose my mojo... Did that cable from amazon work? thanks.

thank you for shering

Martyn.h said:
Did you find anything which does this?
Can I ask a question: I'm looking at getting a Chord Mojo too but sometimes I just want to listen to Spotify - I'm pretty sure it'll work, but can you confirm?
Click to expand...
Click to collapse
Here is :
USB Type-C-to-MicroUSB OTG Cable for connecting Camera/DAC/Media Player/Game Controller/Portable Hard drive/MIDI to Smartphone/Tablet/Computers
Or
http://www.aliexpress.com/item/Type-C-to-MicroUSB-OTG-Cable-for-USB-DAC-Nexus-6P-5X-Zuk-Xiaomi-Meizu-12/32676537731.html?spm=2114.01010208.3.1.RU2fMv&ws_ab_test=searchweb201556_7,searchweb201602_3_10057_10056_10065_10055_10054_10059_10058_10017_107_10060_10061_10052_414_10062_10053_10050_10051,searchweb201603_7&btsid=03307368-91dc-4e12-ba84-b58789a58833
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Free Level Speaker - Charging your device

Hey all,
Did anyone else receive their free Level wireless speaker yet? Mine came today
And you know what? It's alright! I'll definitely use it whilst firing up the BBQ or doing the washing up.
But, how the hell do you charge another device from it? Using the supplied micro to micro USB cable and the USB micro to USB type C adaptor does nothing. Even using the micro to micro into another device still doesn't work.
Maybe I'm missing something obvious but there's nothing in the manual about it.
Cheers

crankshaft said:
Hey all,
Did anyone else receive their free Level wireless speaker yet? Mine came today
And you know what? It's alright! I'll definitely use it whilst firing up the BBQ or doing the washing up.
But, how the hell do you charge another device from it? Using the supplied micro to micro USB cable and the USB micro to USB type C adaptor does nothing. Even using the micro to micro into another device still doesn't work.
Maybe I'm missing something obvious but there's nothing in the manual about it.
Cheers
Click to expand...
Click to collapse
How did you get a free speaker? I'm not entirely sure what you speak of, but I am intrigued.
Sent from my SM-G955U using Tapatalk

In the UK if you pre ordered you could claim a free Samsung Level Slim bluetooth speaker.
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crankshaft said:
In the UK if you pre ordered you could claim a free Samsung Level Slim bluetooth speaker.
Click to expand...
Click to collapse
Ok, cool.
Sent from my SM-G955U using Tapatalk

crankshaft said:
Hey all,
Did anyone else receive their free Level wireless speaker yet? Mine came today
And you know what? It's alright! I'll definitely use it whilst firing up the BBQ or doing the washing up.
But, how the hell do you charge another device from it? Using the supplied micro to micro USB cable and the USB micro to USB type C adaptor does nothing. Even using the micro to micro into another device still doesn't work.
Maybe I'm missing something obvious but there's nothing in the manual about it.
Cheers
Click to expand...
Click to collapse
I got mine yesterday too, and while it's a bit quiet, the fact you can take it to the pool or the shower, is a big plus. If they were £30 I might buy another to connect two haha.
I am not sure though that it's meant to charge other devices, I think those cables might be to charge the speaker?

According to the Samsung website it should
http://www.samsung.com/uk/mobile-accessories/level-box-slim-sg930/EO-SG930CREGWW/

Dont get that here in US.

crankshaft said:
Hey all,
Did anyone else receive their free Level wireless speaker yet? Mine came today
And you know what? It's alright! I'll definitely use it whilst firing up the BBQ or doing the washing up.
But, how the hell do you charge another device from it? Using the supplied micro to micro USB cable and the USB micro to USB type C adaptor does nothing. Even using the micro to micro into another device still doesn't work.
Maybe I'm missing something obvious but there's nothing in the manual about it.
Cheers
Click to expand...
Click to collapse
you press the power button when the cable is connected!! just figured it out....been doing my head in lol ?

ssgunner20 said:
Dont get that here in US.
Click to expand...
Click to collapse
We have that promotion right now in Canada, any purchase during month of May gets a free Level speaker too.