Develop Bugs

Official Vehicle Dock Kit

Hi all.
Just took delivery of my dock kit, and it's very nice. Well built, but whether its worth £35 quid is another story.
Anyway, that aside...
When the default "Driving Menu" is enabled, is there a way to change it, especially to use CoPilot instead of Google navigation?
I have had a quick search in this section to see if anyone else asked the same question.

Im in the same boat. It would be nice if someone could do a workaround. Nice bit of kit for the price.

NatTheCat said:
Im in the same boat. It would be nice if someone could do a workaround. Nice bit of kit for the price.
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Click to collapse
How do you get audio to come out of the rear connector. I plugged my 3.5mm cable into the socket and the sound still comes out the speaker!
Have you tried it?

Settings - dock settings
ALexander

alx37 said:
Settings - dock settings
ALexander
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Yep! I should have read the booklet, it did tell me in there ;-)
RTFM!

I struggle to take the phone out cleanly using on hand - always hit the power button. Dock mode seems pretty poor to me, seems to get all voice activated with road noise - is the google one any better? (we have a samsung 'special', I think?)

Another thing I've noticed is the terrible engine whine from the loudspeakers when its charging.
Now I tried headphone out socket too, and the same problem occurs.
To me it's a lovely piece of kit, but if you have it connect via Aux then u need to listen to the whinning noise from the charging.

Anyone conquered the noise suppression from an in car charger? It's doing my head in!

stratplayer said:
Anyone conquered the noise suppression from an in car charger? It's doing my head in!
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Click to collapse
have you checked it's not your car? Will try and remember to test if mine does this...

i also have the whining problem when charging. after some investigation, it appears to be caused by poor connections. in my case i suspect the head unit, as i didn't connect the rod at the back to the car frame with the bolt and nut.
you can get a ground loop isolator for about £15, but they just mask the problem - should really get it fixed if there is an electrical problem

Interesting. I have a 2008 Ford Mondeo from new. I'd hope that is electrically correct, but who knows.
I am awaiting delivery of a new car (Audi A3), so I will see if this has the same issue.
It's a real shame because the AUX out on the device increases the volume limit sent to the head unit and it makes a massive difference all round, this limit set by the poxy EU rules on the headphone out socket of the phone is really low (83% of max volume) and when you compare the two on the device its obvious the car kit is better.
BTW it makes the whining noise out of the headphone socket too, when plugged into cradle.

from what i've read, the noise when charging is usually from the alternator. do you notice the whine change when you speed up. if so, i'd get it checked out.
There is a method of basically powering the head unit direct from the battery, bypassing all the other connections and wires the juice has to go through to get to the head unit. probably what i will do if mine doesn't work after i've installed it properly.

I plugged mine into the radio today. From the headphone socket, no problem apart from a lack of volume (even on max gain, it is only just loud enough against the road noise). No background noise though.
Plugged into the connector on hte back of the dock is a completely different story. A ~10khz whine, which is present even with the 12V lead disconnected, and worse when it is connected. Sounds like breakthrough from a switch-mode power supply to me. Makes the audio-out on the dock not fit for purpose. Time to add my review on a fre sites selling them...
The other complaint I have is that it doesn't grip well enough to the windscreen.

tshoulihane said:
I plugged mine into the radio today. From the headphone socket, no problem apart from a lack of volume (even on max gain, it is only just loud enough against the road noise). No background noise though.
Plugged into the connector on hte back of the dock is a completely different story. A ~10khz whine, which is present even with the 12V lead disconnected, and worse when it is connected. Sounds like breakthrough from a switch-mode power supply to me. Makes the audio-out on the dock not fit for purpose. Time to add my review on a fre sites selling them...
The other complaint I have is that it doesn't grip well enough to the windscreen.
Click to expand...
Click to collapse
I agree, although I get noise from the headphone socket when in the cradle and charging.
I have raised a returns to send my unit back for a refund. It's a waste of time having it if you cant listen to music on it! Imagine listening to the SatNav with all that silence and "whine" on the speakers, it would drive you bonkers.
It's a real shame as the overall quality is pretty good, but it is not fit for purpose in my opinion.
Will update this thread if I get any more news.

Just posting a review on Amazon... found this review too
2.0 out of 5 stars Dissapointing, 28 July 2011
By
Sean Houlihane
This review is from: Samsung Vehicle Dock Kit for Galaxy S II (Electronics)
For the price, this does not do well enough. Yes it fits well, and holds the phone, with an integrated dock connector. However:
It is a push-fit corner grabbing design, and I find it almost impossible to release the phone with one hand.
The windscreen suction mount is feeble, so maybe 20% of the time rather than removing the phone, I end up with the whole thing coming un-stuck.
Dock mode on this phone is almost useless, so plan on replacing it if you think it is a good feature.
The audio-out functions, but there is a very poor electrical design - even if the charger is not plugged in, the signal picks up a constant high pitched whine (even with the car engine off)
Buy a cheaper one, and you'll feel less hard done by.

tshoulihane said:
I plugged mine into the radio today. From the headphone socket, no problem apart from a lack of volume (even on max gain, it is only just loud enough against the road noise). No background noise though.
Plugged into the connector on hte back of the dock is a completely different story. A ~10khz whine, which is present even with the 12V lead disconnected, and worse when it is connected. Sounds like breakthrough from a switch-mode power supply to me. Makes the audio-out on the dock not fit for purpose. Time to add my review on a fre sites selling them...
The other complaint I have is that it doesn't grip well enough to the windscreen.
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Click to collapse
Hilarious, just posted your comment on here from Amazon, didnt realise it was you until after I posted it!

There's one more for you to find - and it's not a cut'n'paste... Maybe not live yet.

If you don't want to run a car Samsung's menu
If you don't want to run a car Samsung's menu install aps from the store :
Dock No-Op .
If you want to restore the default you have to uninstall the application.
Samsung Cars Menu and that sucks and this increased volume of system sounds, it's up scares. I think everybody can hear it in the around car
And what this menu is, and so one can make your own card to use in the car.
Personally, I mounted the Launcher 7 menu that conforms to the Windows Mobile 7 and has the icon in the system ankles. Cubes as they rotate with the vertical grip twist at the best level for navigation. This arrangement works well in the car, because after docking nothing changes and I can continue listening to your music on the equipment in the car, not a hundred times to click to activate the music listened to on headphones before
Sorry for bad english, but google translator

I was a bit apprehensive about buying this dock as I'd read a lot of reviews complaining about engine noise and sub-par audio quality when outputting sound through the line-out but since receiving it I've been really pleased with it. There is no engine noise or unwanted sounds so I guess this varies from car to car and depends on how your stereo is wired up. I've also run a few low frequency speaker test mp3s through the line-out and headphone-out it as I'd read reports of the line-out cutting off some of the low frequencies but to my ear I hear no different and I get a good response from my sub with both. My only gripe is that the call audio is not routed through the line out. Although I knew this was the case prior to buying, I just can't understand why Samsung would have left this feature out. I've read that this was the case with other Samsung phone's official docks previously and in most of the cases I've read about a solution has been found either through a OS/kernel tweak or an app which sorts the problem out. I'm just hopeful that a helpful dev is able to have a look at this and see if a solution can be found for the SGS2. Otherwise it's a great dock

I have to say I am disappointed with this dock. Coming from a Moto Atrix dock, this is poorly designed. Love my phone, hate the dock.
At first glance it seems extremely well made but after using for a while it is fustrating.
One, they use to many materials compared to the Atrix dock. This thing is huge.
Two, its hard to get out of the dock. The atrix dock had a nice flip up latch that secured the phone.
Three, you have to run two cables from the dock for changing and audio. The atrix dock had one cable coming from the dock with an audio out dongle near the end of the cable.
Last, the freaking background noise is terrible. Dont even try to listen to audio at a low volume.
I like the flip up charger adapter. Also it works with the official extended battery. But thats about it.
Sent from my GT-I9100 using xda premium

Car dock

Well, I got the Samsung dock, and as much as I like the E4GT, the dock is terrible. Here's my experience:
1. There's a ton of line noise when the phone is docked but nothing is playing, just like with the Epic. I'm using the OEM charger, but that's not the problem--using the same charger, the Photon's car dock is absolutely silent. Samsung must be using some cheap electronics in this thing, and it's simply horrible. (Sorry for venting, but seriously...)
2. The software isn't nearly as seamless as the Photon's either. First, on the Photon, when you dock an app starts that essentially takes over the home button. That means you can move back and forth between the app and the home screens easily. On the Samsung, it seems like once you leave the Vlingo app to, say start a radio streaming app, you can't get back to the dock mode. At least, not without unplugging/replugging the dock connector, but that's extra wear and tear. If I'm wrong about this, please let me know.
Then, the Photon app allows for 4 custom apps to be assigned. That provides a great deal of flexibility, and again it's easy to go from one app to another and then back to dock mode.
Overall, the Samsung car dock experience is nowhere near the Photon's. Motorola really did a great job with this, and Samsung makes it look like they gave actually using the phone in the car zero thought.
What's everyone else doing to make this experience more usable? I'm still choosing between the Photon and the E4GT, and the car dock definitely is a mark in the Photon's favor.

1) Use bluetooth audio streaming for zero noise. Are you connected by the dock's audio out jack, or the GS2's headphone jack? I noticed better sound with the latter, but using BT is easier and sounds so much better.
2) Ditch Vlingo for CarHome Ultra. Extremely customizable and lots of great features, including up to 18 app shortcuts and auto-switching day/night themes. I love it.

You could make a profile in tasker that recognizes when the phone is plugged into a dock. Or you can make one for when it is rotated in landscape and plugged in. Then, you can enable an app to run, or have a list of apps that you can choose from. This is what I do with my phone and I don't even have a dock. It's awesome how much you can do with tasker!

fonseca898 said:
1) Use bluetooth audio streaming for zero noise. Are you connected by the dock's audio out jack, or the GS2's headphone jack? I noticed better sound with the latter, but using BT is easier and sounds so much better.
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I'd love to do that, unfortunately my car doesn't have Bluetooth audio. And I'm going from the dock's audio out to my car's AUX in. That's an idea, using the headphone jack, but I hate adding wear and tear.
2) Ditch Vlingo for CarHome Ultra. Extremely customizable and lots of great features, including up to 18 app shortcuts and auto-switching day/night themes. I love it.
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Click to collapse
Great, I'll give that a try, thanks!

Sholland91 said:
You could make a profile in tasker that recognizes when the phone is plugged into a dock. Or you can make one for when it is rotated in landscape and plugged in. Then, you can enable an app to run, or have a list of apps that you can choose from. This is what I do with my phone and I don't even have a dock. It's awesome how much you can do with tasker!
Click to expand...
Click to collapse
That's another idea. Thanks!

fonseca898 said:
2) Ditch Vlingo for CarHome Ultra. Extremely customizable and lots of great features, including up to 18 app shortcuts and auto-switching day/night themes. I love it.
Click to expand...
Click to collapse
Thanks again for the tip, that app rocks. In fact, it's better than the Photon's car dock app.
Now all I need to do is find some way to clean up the line noise and I'll be a happy camper.

Go to radioshack. Ask them for a ferrite core. Should be a ring of "ferrite" or iron. Make sure it's big enough to put the plug on your audio cable through. Push it through and wrap it around a few times and see if that helps. Also, running a separate hot lead and ground from your car battery to the cigarette plug you use should help. But the ferrite core should be easier/cheaper
Sent from my SPH-D710 using XDA App

iamtheug said:
Go to radioshack. Ask them for a ferrite core. Should be a ring of "ferrite" or iron. Make sure it's big enough to put the plug on your audio cable through. Push it through and wrap it around a few times and see if that helps. Also, running a separate hot lead and ground from your car battery to the cigarette plug you use should help. But the ferrite core should be easier/cheaper
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
I'll give it a shot, thanks! I might even have one sitting around somewhere...

call audio routing
Has anyone else been able to get call audio to route to the output on the dock? media audio comes out the port so I can hear that on my cars speakers but when I make a call it comes out of the phone speaker....

So, I've tried a variety of power adapters, USB cables, and audio cables, and the line noise remains. I'm going to try the ferrite core around the audio cable, but I don't think that's the issue--if you unplug the unit from power, the line noise disappears. So, I think it's just bad circuitry in the dock.
One would think that Samsung would have received complaints about this with the Epic dock (at least) and would have fixed it. Motorola managed to make a dock with excellent sound quality and zero noise, so it's certainly possible.
Otherwise, the E4GT is decent in the car with that Carhome Ultra app. Although, that doesn't really help with my decision between the E4GT and Photon, because with the Photon I could have the same dock app but also outstanding audio quality.

I can only assume the noise you are hearing is due to a Ground Loop/Hum.
It has to do with the fact that your power source is grounded to a different point than the stereo/speakers. the hum you hear is the difference in voltage's between the 2 grounds being represented as noise in the line.
for instance. I recently installed a new head unit in my truck, the unit has an AUX in and a USB port. If i plug my E4GT aux cable into the stereo and plug the USB charger into the port on the stereo - NO Noise. However, if i plug the phone to charge in another outlet (say, the cig lighter) then there is Line Noise everytime. The same principle applies when plugging your phone audio jack into any electronics.
Hope this helps shed a little light on the noize.

ReFiLL said:
I can only assume the noise you are hearing is due to a Ground Loop/Hum.
It has to do with the fact that your power source is grounded to a different point than the stereo/speakers. the hum you hear is the difference in voltage's between the 2 grounds being represented as noise in the line.
for instance. I recently installed a new head unit in my truck, the unit has an AUX in and a USB port. If i plug my E4GT aux cable into the stereo and plug the USB charger into the port on the stereo - NO Noise. However, if i plug the phone to charge in another outlet (say, the cig lighter) then there is Line Noise everytime. The same principle applies when plugging your phone audio jack into any electronics.
Hope this helps shed a little light on the noize.
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Click to collapse
I hear you, except that I have two different docks that display entirely different behavior. Actually, I have two docks from the same manufacturer (Samsung, for the Epic and the Epic Touch) that have significant line noise, and one (Motorola) that does not. Note that these are all plugged into exactly the same power adapter and outlet and using the same USB and audio cables.
So, you'd need to account for the fact that the Motorola signal is perfectly clean in precisely the same circumstances while the Samsung's signal isn't.

I believe every word of it.
From what I know about Ground Loop Hum there are many weak links in the chain, and certainly some products behave better than others. The problem is still most likely the Ground.
One possibility would be that the manufacturer of the Moto Dock has included an isolator in the power supply line (or even in the audio supply line), and the manufacturer for the Sammys didnt.
My experience in this subject is with my Laptop/DJ setup making noise when plugged into audio equipment. when the power supply was plugged into the lappy, 60hz hum. Unplug it and it goes away. More than likely the problem was inside the computer or the power supply was just poorly manufactured as other models may not have the Hum. In my case i purchased a small isolater solved the problem. It may be possible to find one for a 12v car electrical system.

ReFiLL said:
I believe every word of it.
From what I know about Ground Loop Hum there are many weak links in the chain, and certainly some products behave better than others. The problem is still most likely the Ground.
One possibility would be that the manufacturer of the Moto Dock has included an isolator in the power supply line (or even in the audio supply line), and the manufacturer for the Sammys didnt.
My experience in this subject is with my Laptop/DJ setup making noise when plugged into audio equipment. when the power supply was plugged into the lappy, 60hz hum. Unplug it and it goes away. More than likely the problem was inside the computer or the power supply was just poorly manufactured as other models may not have the Hum. In my case i purchased a small isolater solved the problem. It may be possible to find one for a 12v car electrical system.
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Click to collapse
I actually hooked up an old RadioShack groundloop isolator to the AUX cable, and it got rid of the hum.
Something like this should work fine: http://www.amazon.com/GROUND-LOOP-I...QTRI/ref=sr_1_2?ie=UTF8&qid=1322958491&sr=8-2

ReFiLL said:
I believe every word of it.
From what I know about Ground Loop Hum there are many weak links in the chain, and certainly some products behave better than others. The problem is still most likely the Ground.
One possibility would be that the manufacturer of the Moto Dock has included an isolator in the power supply line (or even in the audio supply line), and the manufacturer for the Sammys didnt.
My experience in this subject is with my Laptop/DJ setup making noise when plugged into audio equipment. when the power supply was plugged into the lappy, 60hz hum. Unplug it and it goes away. More than likely the problem was inside the computer or the power supply was just poorly manufactured as other models may not have the Hum. In my case i purchased a small isolater solved the problem. It may be possible to find one for a 12v car electrical system.
Click to expand...
Click to collapse
Well, the salient point is that Samsung uses inferior components. It's possible to make a device that doesn't suffer from the problem, as Motorola has shown.

DevalB said:
I actually hooked up an old RadioShack groundloop isolator to the AUX cable, and it got rid of the hum.
Something like this should work fine: http://www.amazon.com/GROUND-LOOP-I...QTRI/ref=sr_1_2?ie=UTF8&qid=1322958491&sr=8-2
Click to expand...
Click to collapse
Thanks, I'll give that a try.
Sent from my SPH-D710 using Tapatalk

most times I've had line noise, be it from improper grounding or from cellular interference (namely from ground issues) the ferrite core fixed it. If it doesn't, the power isolation will. The reason the USB Ports on the head unit doesn't create line noiseis because it has isolation circuitry built in. The core is cheap. If that doesn't work, isolate power.
Sent from my SPH-D710 using XDA App

Okay, in the latest saga with the Samsung car dock, I noticed this morning that when I received a Bluetooth phone call, the TuneIn Radio audio I was playing didn't stop. Or, rather, it did stop once the stream buffer ran out, because I was on 3G and of course 3G data isn't available during calls.
Is this really how the Samsung dock works, that audio doesn't give way to Bluetooth calls? Or is that perhaps the CarHome Ultra app?
Still a bit frustrated with this aspect of the Epic Touch. The Photon's car dock works perfectly, including muting audio while on a Bluetooth call.
Grrr. I know, I know, if I like the Photon's car dock so much, why I don't I just stick with that phone... But seriously, Samsung, how hard is it to get this right?

wynand32 said:
Okay, in the latest saga with the Samsung car dock, I noticed this morning that when I received a Bluetooth phone call, the TuneIn Radio audio I was playing didn't stop. Or, rather, it did stop once the stream buffer ran out, because I was on 3G and of course 3G data isn't available during calls.
Is this really how the Samsung dock works, that audio doesn't give way to Bluetooth calls? Or is that perhaps the CarHome Ultra app?
Still a bit frustrated with this aspect of the Epic Touch. The Photon's car dock works perfectly, including muting audio while on a Bluetooth call.
Grrr. I know, I know, if I like the Photon's car dock so much, why I don't I just stick with that phone... But seriously, Samsung, how hard is it to get this right?
Click to expand...
Click to collapse
I wonder if it might be the phone or the application. When listening to Sirius/XM radio without a dock, and I get a phone call, the radio keeps blasting away.

You don't stick with that phone because this one is superior in every other way. Its a minor issue. Why would you even have the aux input selected when there is no music playing? I have the noise too so I get it but ...yeah I just change the input when I don't need it.
Sent from my SPH-D710 using XDA App

Who's Interested in a Auto Dock?

I'm designing a dock for the N7v2 for use in a car. It will have Qi wireless charging and Bluetooth audio receiver, with a standard 3.5mm audio output. It should be compatible with most cases.
I am also currently designing a mounting method that should be close to universal between different cars, and should not fall off like most other docks in the market.
I designed one for the N7v1 using the Pogo pins, and I can never go back to not having a dock for my tablet in my car. It's amazing the difference it made for me.
I want to know a couple things.Please reply with the following template:
1. Would you want a dock like this?
2. How much do you expect to pay for it?
Thank you everyone, in advance!

lorddralnu said:
I'm designing a dock for the N7v2 for use in a car. It will have Qi wireless charging and Bluetooth audio receiver. It should be compatible with most cases.
I am also currently designing a mounting method that should be close to universal between different cars, and should not fall off like most other docks in the market.
I designed one for the N7v1 using the Pogo pins, and I can never go back to not having a dock for my tablet in my car. It's amazing the difference it made for me.
I want to know a couple things.Please reply with the following template:
1. Would you want a dock like this?
2. How much do you expect to pay for it?
Thank you everyone, in advance!
Click to expand...
Click to collapse
Sounds like a great idea. Do you have any links showing your work with N7v1? Heck, I may be interested in that version since the v1 tablet can be had for cheap these days and is more than capable for the limited functions needed in a car. At any rate:
1. yes, would be interested
2. no idea what a fair price would be, but $50-$100 seems like a fair ballpark

I would think very carefully why you need a wireless charger in a car.
Heat kills batteries; tablets in cars get hot. Why add heat to your woes?
The tablet is likely to be busy playing music and navigating, often in full sunlight. Why add to the heating problems by using a wireless charger when a 5v cord charger attached to the car supply will do the trick?
The wireless car mount/charger iterations for the Nexus 4 were a failure, I recall.

rant said:
Sounds like a great idea. Do you have any links showing your work with N7v1? Heck, I may be interested in that version since the v1 tablet can be had for cheap these days and is more than capable for the limited functions needed in a car. At any rate:
1. yes, would be interested
2. no idea what a fair price would be, but $50-$100 seems like a fair ballpark
Click to expand...
Click to collapse
I've attached 4 pictures of the dock I made for the first Nexus 7. You'll notice that it inst exactly a dock you can put in just any car. I realized I made a little too rugged... and big!

croques said:
I would think very carefully why you need a wireless charger in a car.
Heat kills batteries; tablets in cars get hot. Why add heat to your woes?
The tablet is likely to be busy playing music and navigating, often in full sunlight. Why add to the heating problems by using a wireless charger when a 5v cord charger attached to the car supply will do the trick?
The wireless car mount/charger iterations for the Nexus 4 were a failure, I recall.
Click to expand...
Click to collapse
Well, that's why I don't leave the tablet in the car, I keep it with me. While I'm in the car, if it's hot out I will have the A/C on anyways, so heat has not been an issue.
Most of my broken devices are dead because the USB port broke because of wear and tear. One of the points of this dock is to reduce that. Plugging in a device everytime I get in the car is partly to blame for such failures. I would have used Pogo Pins, like with the first Nexus 7, but they don't exist on the second.

Shared app developing ideas
Hey everyone,
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I honestly have no idea what i am looking to read and study up on so if you have any ideas than please let me know so i can educate myself. I end goal is to be a program developer.
Also i have an amazing ideas of a great new app. I have the layouts for the app but don't have the knowledge to build the app myself. If you are interested in learning more about my idea and possibly collaberate pleae let me know and we can possibly exchange numbers.
Another thing, i am an inventor and creator.
-----trickyspartan

lorddralnu said:
Most of my broken devices are dead because the USB port broke because of wear and tear. One of the points of this dock is to reduce that.
Click to expand...
Click to collapse
Look at active Brodit car mounts - say for a Nexus 4. There the device is supported and aligned as it glides onto or off the USB. There is no possibility of twisting or yawing.
I think your proposal maybe over-kill - simplest solutions are always best IMHO. A guy in the Nexus 4 forum came to no good end and had a lot of unhappy 'subscribers'. Just saying.

croques said:
Look at active Brodit car mounts - say for a Nexus 4. There the device is supported and aligned as it glides onto or off the USB. There is no possibility of twisting or yawing.
I think your proposal maybe over-kill - simplest solutions are always best IMHO. A guy in the Nexus 4 forum came to no good end and had a lot of unhappy 'subscribers'. Just saying.
Click to expand...
Click to collapse
I would normally agree. I was hoping to make one that doesnt require a case to be removed to use. I designed my previous dock the way you describe (except it used the Pogo pins on the side), but I always had to remove the case and eventually the first case was showing signs of damage from being removed so often.
My hope is that the base platform of the dock I want to build will be compatible with multiple models of smartphones and tablets that are Qi capable. That'll require a lot more planning, but may be worth it.

lorddralnu said:
.
My hope is that the base platform of the dock I want to build will be compatible with multiple models of smartphones and tablets that are Qi capable. That'll require a lot more planning, but may be worth it.
Click to expand...
Click to collapse
Well if you're set on the route you've described; ... I see you've picked up on the Peltier pump in another thread. Credit me somewhere if you make it!
But I might consider an approach made by Philips in an Android Bluetooth Speaker and dock. The adjustment for USB and its placement on an edge, plus 180 degree rotation needed for some models, was catered for physically. A much cheaper approach which copes with tablets and phones!

croques said:
Well if you're set on the route you've described; ... I see you've picked up on the Peltier pump in another thread. Credit me somewhere if you make it!
Click to expand...
Click to collapse
I think I will use a Peltier pump. And yes, I'll make sure you get credit for that idea I'll mount the transmitting coil onto the cold side (probably with a layer of copper in between, we'll try several things) and have the hot side of the pump mounted to the aluminum/sheet metal of the back plate (probably with thermal paste as well). I'll have the pump on a simple thermostat. Good thing I have an EE helping me with this project
Hopefully the final product won't need a Peltier pump, but I will definitely have it in the prototype.
croques said:
But I might consider an approach made by Philips in an Android Bluetooth Speaker and dock. The adjustment for USB and its placement on an edge, plus 180 degree rotation needed for some models, was catered for physically. A much cheaper approach which copes with tablets and phones!
Click to expand...
Click to collapse
I haven't had very good experiences with using that type of dock The results of daily use tend to be USB ports that are stretched and loose. At least that's how it has been in my experience.

lorddralnu said:
I'll mount the transmitting coil onto the cold side (probably with a layer of copper in between, we'll try several things) and have the hot side of the pump mounted to the aluminum/sheet metal of the back plate (probably with thermal paste as well). I'll have the pump on a simple thermostat. Good thing I have an EE helping me with this project
Click to expand...
Click to collapse
Don't forget to talk to your EE about eddy current loses in any conductors (copper, aluminium) you have nearby to your induction coil.

Interesting read, but with the cooler this is going to be a very expensive dock. Without it, look to Canada for your market.
I rigged up one for my Nexus 4 last Winter. Based on some testing, I used the most efficient charger I could find for that phone (the LG wcp-700). It worked very well... until late spring when the mercury broke 70. To make a long story short, I pulled it last month as the phone was getting too hot. This in a suv with a 4 liter v6 with plenty of air conditioning, front and rear.
Without the cooler, the tablet needs to be located directly in front of a vent, or even in moderate climates the unit will get hot enough to significantly reduce charging current.
One more thing to consider... the Nexus 7 is polarized vertically. This means that it is invisible in landscape orientation for anyone wearing polarized driving glasses, which I am willing to bet is a large percentage of your prospective market (tech savvy, auto enthusiasts). Most displays designed for vehicles are polarized at 45°, making this not such an issue.
While the tinkerer, software developer, and electronic geek in me wanted a fully integrated tablet in my truck, I soon came to the conclusion that it was simply not practical. What is really needed is a properly done appRadio, where a head unit can mirror the display of a mobile device (ideally wirelessly - miracast, etc.) with a control link set up to pass touches on the head unit back to the mobile device. We're about 30% there now, but a lack of standards, and major players wanting proprietary solutions is a problem.
I wish you much success with your endeavor, but just wanted to share my experience and feelings that this will not be all that marketable a product.

The problems you had with the nexus 4 does not necessarily effect the nexus 7. The nexus 4 was pretty terrible at wireless charging. I had a car setup with a qi charger with the lumia 920 and it worked great even in hot weather. I am not saying the nexus 7 will work, but it might.
Sent from my HTC One using xda app-developers app

txaggies07 said:
The nexus 4 was pretty terrible at wireless charging.
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What makes you say that? I ask as I have seen relatively similar performance with both the N7 and N4. The tricky thing about the N4 is that the coil is not centered in the vertical dimension, so for folks making the assumption that it is, there will be quite a bit of offset.

Solutions Etcetera said:
What makes you say that? I ask as I have seen relatively similar performance with both the N7 and N4. The tricky thing about the N4 is that the coil is not centered in the vertical dimension, so for folks making the assumption that it is, there will be quite a bit of offset.
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I say that because of all the issues people had with car docks. It also had issues with the dt-900 qi chargers when it shouldn't have. It heated up excessively with most chargers.

I wonder if there will be an Official dock that lets you:
1. Charge
2. Expand TV HDMI out
3. USB port for Hard drive access
I really want the Nexus & FHD to be a Home entertainment player...may be a remote/ Or Kinect like gesture control app built in with the dock
Hope this comes true...it will be the best Combo for a home unit!

Lg G3 hissing charger.

Hey guys i noticed something that I would like to point out and ask you about.
When using the G3 on battery i get no hissing noise whatsoever. But the moment i plug it in the charger supplied i start to vividly hear hissing noises. I noticed that a hissing sound also comes from the charger and i assumed that its normal because of the 1.8 amps flowing through the thing. Is it normal or do i need to hit up tmobile for a replacement charger?

helikido said:
Hey guys i noticed something that I would like to point out and ask you about.
When using the G3 on battery i get no hissing noise whatsoever. But the moment i plug it in the charger supplied i start to vividly hear hissing noises. I noticed that a hissing sound also comes from the charger and i assumed that its normal because of the 1.8 amps flowing through the thing. Is it normal or do i need to hit up tmobile for a replacement charger?
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it is normal I had this on my old one x charger too

suljo94 said:
it is normal I had this on my old one x charger too
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Ohh, thank you. [emoji3]

helikido said:
Ohh, thank you. [emoji3]
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a tip for later instead of typing thanks press the thanks button under my post

suljo94 said:
a tip for later instead of typing thanks press the thanks button under my post
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Done. Using taptalk so just figured it out

helikido said:
Done. Using taptalk so just figured it out
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you are welcome

I can tell you I've NEVER gotten any hissing sounds when charging any of my phones, or my wife's phones, whatsoever, over the years. Even charging them from a near empty status AND using them at the same time.
One time last year, I got a hissing/crackling sound when charging my Note 3 and it turned out our kitten had chewed a portion of the cable, right through the sheathing and exposed some of the wires. The cable was shorting out a bit and creating that hissing/crackling sound.
I would try and see if you can replicate the hissing sound when using another charger and/or cable, to narrow down whether it's the charger, cable or phone.
Hissing from the charger block could indicate a defect in the stepdown transformer or a short in the charging cable. Hissing from the phone could indicate a charging port problem. Hissing from the battery could indicate a defective battery.
Of course, this is coming off your description of a hissing sound, which might be similar to a crackling sound, in which the above still holds true.

JustLok said:
I can tell you I've NEVER gotten any hissing sounds when charging any of my phones, or my wife's phones, whatsoever, over the years. Even charging them from a near empty status AND using them at the same time.
One time last year, I got a hissing/crackling sound when charging my Note 3 and it turned out our kitten had chewed a portion of the cable, right through the sheathing and exposed some of the wires. The cable was shorting out a bit and creating that hissing/crackling sound.
I would try and see if you can replicate the hissing sound when using another charger and/or cable, to narrow down whether it's the charger, cable or phone.
Hissing from the charger block could indicate a defect in the stepdown transformer or a short in the charging cable. Hissing from the phone could indicate a charging port problem. Hissing from the battery could indicate a defective battery.
Of course, this is coming off your description of a hissing sound, which might be similar to a crackling sound, in which the above still holds true.
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Are you sure your g3 does not have the hissing sound while charging? At all?
Sent from LG Gangster 3

All mobile chargers will make a noise. That sounds comes from the electrical components, as they chance AC electricity to DC at lower voltage.

I dug out an old block charger and that gives off a hum, not a hiss, when I use it and also when it's just plain plugged in and not being used to charge or pass current. The hum do is very faint. I don't get any hiss or hums on my other chargers, whether charging or not.
And yes, all chargers are stepping down voltage, but cellphone chargers on a whole should not be hissing. The current is not much on a whole compared to other appliances that hum (ACs, fridges, etc) that are pulling more amps and current through that transformer. You might get an audible hum or noise when your phone is pulling the full current with a deep charge and even more so while deep charging and using it at the same time.
You said you're hearing hissing, which is not the same as humming. If your battery or phone is emitting a hissing charge, then something is up. As I mentioned in my earlier post, hissing from your phone or battery might signify a defective battery and bad charging, the cells might be overheating or so.
I'm not sure on your setup or so, but one cause of loud humming on transformers is "dirty voltage", or when you have noise on your electric lines. All lines have noise, but depending on your electric supplier, they might have more noise on the line and that translates into the transformer.
You mentioned hissing and not humming again, so I'm assuming it's actual hissing you're hearing. If it was humming, then I would say that that is normal under use and so forth. But hissing is something different, especially if it's coming from your phone!

Dash Charger noise?

Does the Dash Charger make noice also, is it Normal? Thx!

Just checked but No Sound at all.

Mine does - a very slight buzzing whirling noise...have to have ear less than a foot away to hear it. Not sure if it's normal, but my Op2 adapter made pretty much the same noise.

Normally i would see cheap condensators placed.

khaos64 said:
Mine does - a very slight buzzing whirling noise...have to have ear less than a foot away to hear it. Not sure if it's normal, but my Op2 adapter made pretty much the same noise.
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Yea Same, i asume its normal!

Demian3112 said:
Does the Dash Charger make noice also, is it Normal? Thx!
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Mine has always been silent..

mine is also complete silent

dasacom said:
mine is also complete silent
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Only notice it when sitting next to it. asume its normal some kind of coilwhine..

Mine is silent charging... But when its not plugged in to the phone theres a hiss... Like a snake in the room!.

Yes i have some situation. Power supply does a noise. Bit it'is very rarely
Sent from my OnePlus3 using XDA Labs

In my personal experience I have noticed an extremely high pitched noise from pretty much every mobile phone charging brick I have ever used. Nothing to worry about.

Mine has always been 100% silent, but if you're getting some kind of noise out of it, try plugging it into the power strip, or plug it in at a different location and see if it stops. It might be that the power coming into your house is "dirty". I used to build pro audio studios, and we always had to use power conditioners due to the power coming into the location giving producing substantial noise in the lines, both analog and digital.. A lot of it has to do with slightly out of phase AC current, and when it's switching to DC in the charger transformer it can make noise at the front end of said transformer. Also, the dash charger pulls a significant amount of current to be transferred so I can imagine some noise would be expected with unconditioned power going into it.
If it's annoyingly audible I would plug it in elsewhere and if it still makes the same noise contact OnePlus and get another one.

So Many people facing same sound issue inside the charger,its normal

Mine is silent and if the sound being emitted by your charger is like a buzzing one is extremely low then it can be considered as normal but if its even audible during normal room sounds then you should get it checked.

If you unplug your charging cable from the phone before unpluging your charging brick from the wall outlet, then some "charge" may remain in the charging brick. Just remove the charging brick from the wall outlet first, wait about 3 seconds for the remaining "charge" to transfer from the charging brick to the phone, and then unplug your cable from the phone. By doing these, there is no remaining "charge" in your charging brick and it won't make that buzzing noise. That buzzing noise occurs on all of my other charging bricks as well (for samsung tablet, lenovo smartphone, oneplus 2). Of course, if the charging brick makes that noise, just plug your cable in the phone (without plugging your charging brick in the wall outlet) - this will transfer the remaining charge from it to the phone and the charging brick will stop making that noise.