Hi all, 1st post, but I promise I have searched.
I have a SPV C500 and cant seem to get my car charger to work. I seem to recall that someone once told me that there is a difference between a charge cable and a data/sync cable.
This almost makes sense given that the phone will not charge when connected to a USB port, unless activesync is installed. What does activesync do to allow the charging to work? A charge cable, that worked with my cigarette lighter to USB would be great in the car, but it would also be useful in situations where I am at a PC without activesync installed (often at internet cafe's which prevent installing software).
Hope someone can help
Adam
What does ActiveSync do to allow the charging to work?
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this is most likely because your computer dont turn on 5volt to power on usb before devices are recognised and activesync make that happen
hmmm .... interesting
I have measured the voltage coming from my USB port with a multimeter, which is just 5V. If this is directly off the USB port, without activesync running, then the PC is supplying a constant 5V.
I have also measured the voltage from my car's cigarette lighter adaptor, guess what, also 5V.
There must be something in the phone which makes it "accept" the 5V input.
I cant figure it out tho, is it something to do with the data pins? do these need to show the phone a certain resistance or something (such as dead short) before it will allow the phone to charge?
Seems to have the USB charging disable?
http://forum.xda-developers.com/showthread.php?t=273344&highlight=
Read the post by `Severok`
Related
I have a tomtom bluetooth gps receiver that I used to use with my xda-ii for my satnav solution. I had a car charger that charged the xda and tomtom unit at once. I have now upgraded to the Exec and am hoping to find a similar car charger but couldnt find any on google/ebay - does anybody know of one that exists?
Thanks
Allan
Cannot be of help, but looking for the exact same solution. I had an iMate JAM and a cradle that charged that (mini-USB) and had an output for TomTom Bluetooth. If all else fails I could try taking apart the adapter because it has the correct output, just the Exec won't fit in it!
assuming the TOMTOM gps receiver uses a round 5V center positive connector to charge it ( which it almost certainly would do )
then check out my posts in this thread,
http://forum.xda-developers.com/viewtopic.php?t=29351
the cradle even comes with a wire just for charging BT GPS receivers
Ouch! Thats a little pricey!
I already have a mount that holds the unit, so I am just looking for a calbe charger solution. Anyone have any links?
Thanks
Allan
in that case I have seen a car lighter plug on ebay that has a USB socket in the back, it was on £3~£4 you could then use a regular sync and charge cable to charge it
o2 shops are now stocking the car charging lead... complete with natty o2 shaped blue indicator!
To get round the problem of daisy chaining mounts and receivers, I got a great car charger - dual usb adapter from eBay (I searched for "dual usb car") which gives you 2 usb sockets for about £8 all in. Having bought this though, I'm thinking of installing a spare cigarette lighter socket behind the dash to power it from and cut down on cables in the cabin...
Funnily enough, the many Sync and charge cables for the Sony PSP would be able to simultaneously charge both a Jasjar and a bluetooth GPS unit
here is an example
http://chakatche.fr/catalog/images/PSP/CablesyncchargePSP_big.gif
Universal charger- special
The Universal as well as the Typhoon, Wizard etc. need special wiring for the mini USB. when connecting to the computer the the driver is activating the proper pins in the Mini USB socket and you can see the "charge" light on. However when connecting to a USB Poer Supply, pins need to be manipulated (some to ground or perhaps to Vcc). I'v looked into this issue many times (searching in the Internet) and could not find a proper wiring diagram. although I know for sure that they are exist as there are some Car working chargers offered for Universal / Typhoon.
In any case refering to this thread, a car charger that works for Jam/XDA2Mini most probably will not work for the Jasjar/Universal unless i is apecified as a Universal car charger.
If any of the memebers has come a cross a wiring diagram for Typhoon / Universal charging scheme it is appreciated if you could provide details.. as many of us would like to build their own car charging units.
Re: Universal charger- special
Dubi said:
The Universal as well as the Typhoon, Wizard etc. need special wiring for the mini USB. when connecting to the computer the the driver is activating the proper pins in the Mini USB socket and you can see the "charge" light on. However when connecting to a USB Poer Supply, pins need to be manipulated (some to ground or perhaps to Vcc). I'v looked into this issue many times (searching in the Internet) and could not find a proper wiring diagram. although I know for sure that they are exist as there are some Car working chargers offered for Universal / Typhoon.
In any case refering to this thread, a car charger that works for Jam/XDA2Mini most probably will not work for the Jasjar/Universal unless i is apecified as a Universal car charger.
If any of the memebers has come a cross a wiring diagram for Typhoon / Universal charging scheme it is appreciated if you could provide details.. as many of us would like to build their own car charging units.
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Dude, what are you talking about !! I use the sync lead from my kodak camera to charge my JJ from my laptop it works fine but is slow (my laptop hasnt got much umph) and the same goes for the PSP power lead I mentioned earlier, I use that in the car with my cradle that happens to have USB sockets in it, (pictured in another thread)
It seems that either your usb lead has the proper connection to fit the requirements of the JJ or I am doing something wrong that I am not aware of.
Here is the test: Just take a Powered USB Hub, connect XDA1, XDA2, XDA Mini, XDA2S (all the models that I could test right now) and It seems that the Powered USB Hub can charge these devices.
Now connect the JJ (I suggest with a traditional USB syc cable that comes with either ..) and NADA I got no indication for charging .. than connect the HUB to the your computer which has the ASYNC installed and you see that immidiatly the JJ is being charged. Both feeding measured at 5.15V.
The Typhoon behaves the same for me as well.
Further more, I have few USB chargers (other than the one equipped with the JJ) which is in fact a PS with a USB port . The result of connecting the PS through the traditional sync cable is "No Charging".
The same applied to many Car USB charger that I'v tried.
Perhaps your Kodak sync cable is special (in fact I am looking for the schematic diagram of a cable like this)?.
I tried (just now again) also with Dopod 828 and it seem the same (no charging unless it is connected to the computer).
Please double check your charger cable and try th sync cable that comes with the JJ.
I dont see why kodak would have used a special sync lead, because on the kodaks it is used for data only (power comes in via a diffrent connector) when I get a chance I will buzz out the cable for you !!!
PS I think you shold plug it in and wait, mine starts charging instantaneously when used with the mains adaptor which has 1 Amp of current available, but takes a min or two to start charging when I am using my laptop/in car charger, both of which only have 500mA available.
Car Charge
From reading other threads, Pin 4 in the Mini USB is shorted to ground and that's probably turn on charging ..
I suggest that you read threads about the power charge / car charge in other forums... here is an example I took and although it talks about the Typhoon it is relevant to JJ as well and it suggest to connect pin 4 and 5 to ground. I can't have a good explanation why your JJ starts to charge after 2 monutes. I suspect that it has nothing to do with the current that can b drawn from the PS.
http://www.expansys.com/forumthread.asp?code=I-MATE_SP3I&thread=38
Here's what I've found on modaco.com forums, posted by richwookie on Oct.4 2004:
QUOTE >>>
...I've hacked open my C500 mains charger (quick, where's the superglue), and sure enough there are only 2 wires leaving the box to the mini USB cable, GND (black wire) and VO (white wire). However, after very careful probing, with a very tiny probe no less, I've established that the GND wire is connected to both pins 4 and 5 of the mini USB connector.
Now usually pin 4 would be not connected to anything as pin 5 is normally GND. So next I probed the C500 data cable to see if pins 4 and five of the mini USB were connected together. They weren't of course.
So what does all this mean?
Well, from what I've discovered I conclude that the C500 will only charge if:
1) There is data on the line (even if it isn't saying anything :wink: )
OR
2) Pin 4 of the mini USB plug is grounded.
So what's the solution to making the generic car chargers work?
Do nothing to the car charger. Mod the data cable so that pin 4 at the 'mini' end is connected to ground.
This IS all speculation and I suspect that it is easier said than done. I haven't yet hacked open my data cable, but I expect there are only four wires in it, and the only way to ground pin 4 (mini end) is to somehow bridge them at the connector. I think that is beyond my soldering skills (have you seen the size of the contacts on the plug?!) but I may give it a go anyway.
Anyone else want to try? Let us know here.
<<< UNQUOTE
... and the 2 hours later:
QUOTE >>>
Posted from my SmartPhone while it is charging in my car using a 1.49 cigarette lighter USB adaptor and my newly modded C500 data cable!
I'll let you know if it still works as a data cable when I get home. ;-)
....
Modded cable doesn't work for data now.
When I connect it to the PC it just charges. I suspect that when the phone is in 'charge from adaptor mode' it inhibits the data lines.
<<< UNQUOTE
Well, I guess it's simpler to mod a USB cable, than either carry around a charger, or install Activesync everywhere.
With all this chat about modifying pins etc call me naieve but why not just buy a dedicated charger from expansys or an o2 store ? both cost between £10 - £15
:shock:
Just an observation I have made... I have an O2 EXEC, and charge it quite happily (sort of) with the Standard USB Synch cable and a Car Lighter Socket USB thingy.
The only thing is... It will NOT charge if the EXEC is on (screen lit up) when the USB lead is connected or power connected. Switch the device off, connect the lead, and the charging light comes on.
I find the same when I connect it to the computer with the Synch lead too. It won't connect to ActiveSync or Charge if the EXEC is on when connected.
Hope this helps.
As I know the Touch Pro 2 has a micro usb-ext connector, but I'm at work and a friend of mine has the HTC Touch. His charging device has a normal micro usb connector.
Can I use it to charge the Touch Pro 2 with it?
Yes it will charge but syncing may not
This will work fine.
..and >Stunno. Syncing will definitely not work with a charger ;o)
Thank you guys for the fast answer
And no, I don't want to synchronize with the charger
Whoops! I assumed that, like me, you were going to charge with a usb lead from your works PC
Is it me or is the touch pro 2 charging much much slower when charged via usb from the pc?
Only 1 note: It is not micro.. it's mini-usb
PumpAction said:
Is it me or is the touch pro 2 charging much much slower when charged via usb from the pc?
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Yeap. Max amps from a usb pc port: 500mA. Max from the charger: 2A. the more current, the faster charging...
And as to syncing... it will definitely work too.
The ext-usb port only has additional pins to support audio.
The standard mini-usb pins are used to synchronize the device.
mysterd said:
And as to syncing... it will definitely work too.
The ext-usb port only has additional pins to support audio.
The standard mini-usb pins are used to synchronize the device.
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Click to collapse
how? i've tried a pair of Mini-USB cables. both will charge the device but no data connection to the PC.
Rather handy info on charging - saved me a packet on having to get a new in-car charger for the phone
crazy talk said:
how? i've tried a pair of Mini-USB cables. both will charge the device but no data connection to the PC.
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Click to collapse
Sorry to hear that... I use a normal mini-usb to usb cable every day to sync my HTC Touch Diamond, which has the same extUSB port...
it is POSSIBLE that both the cables you tested are made specificly to charge devices, and dont carry data leads. other than that there is no reasonable explanation why a mini-USB wouldnt work.
Other mini-USB cables have worked fine for me on the Touch Pro2.
Try going into Settings\Connections\USB to PC. With Activesync selected, turn off the "Enable faster data synchronization" check box.
Hi,
I've used a USB charger on all my phones for a few years now. Just plug phone in on my desk and no worries. However my new Defy doesn't seem to take a charge from the USB on my network device (it's not a full PC). However my HTC HD2 could get a charge from it so:
1. Is the Defy more power hungry that it won't charge from an ND (I assume NDs put out less power over USB than a PC)
2. Does it just not show on the battery on the Defy that it's charging?
3. Have I missed something simple? I've gone into USB connection and selected charge only. I can't install drivers on the ND though, could that be it? The ND hasn't said it's found new hardware either though.
Thanks in advance for advice
motorola has a notorious reputation on this, they require a usb driver to be installed for charging some of their phones...
i think there's some strange combinations at work about this but, just use a standalone charger and it should solve the problem.
Thanks. I thought it would be that.
Bit short of plug sockets at work but I'll figure something out
Another point to note is that the Defy is very fussy regarding USB cables. A lot of cheap ones will pass data but no charge.
martint235 said:
Thanks. I thought it would be that.
Bit short of plug sockets at work but I'll figure something out
Click to expand...
Click to collapse
Would you consider hacking a usb cable to make a charging lead? A standard usb lead plugged into a PC will try to enumerate with the PC before it starts to draw power from the PC. However if you hacked a usb cable and shorted the DM and DP lines on the phone side, the phone 'should' detect the cable as a mains charger rather than a PC, thus enabling charge without any drivers on the PC. It would be something like the attachment...
Thanks for all the replies. Although my USB cable wasn't cheap and was capable of charging an HD2 which must be more power hungry than a Defy, it turns out the Defy is really fussy. It's charging fine through the Motorola USB lead on my network device.
My USB loading experience
Hi,
just to share my exp:
- loading with most USB loaders: fine
- My Car loaders and my multi power adaptor with usb can load everything but the defy
- on Computer no problem (some say you will have better battery performance when loading on non Computer: I can´t see a difference)
- cable doesn´t change anything
technome said:
Another point to note is that the Defy is very fussy regarding USB cables. A lot of cheap ones will pass data but no charge.
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Click to collapse
I've bought a couple of USB cables from ebay. My Defy seems to connect and disconnect when using them, like it has a loose connection. If I use the Motorola one, of course it's fine!
I have the official Samsung desktop dock for the GN with pogo pins for charging. I cut out a notch in the left side of the dock so that I could access the USB port on the phone when it's docked. I'd hoped I could then attach a USB OTG cable and mount a flash drive while the phone charged via the pogo pins.
Unfortunately, the two functions seem to be mutually exclusive. If the phone is in the dock and charging and I attach the cable and flash drive, they are not recognized by the phone. Or, if I attach the cable and flash drive first and mount the flash drive before placing the phone in the dock, charging doesn't initiate when I put the phone in the dock.
Does anyone know if there is some way via software or hardware to force pogo pin charging while a flash drive is attached and mounted via a USB OTG cable?
I will try tomorrow on my self built car pogo charger and usb otg. I have aokp with the fast charge override feature.
subvertz said:
I will try tomorrow on my self built car pogo charger and usb otg. I have aokp with the fast charge override feature.
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Sounds great! Thanks much. If it works, it'll tempt me to go to AOKP myself.
Any luck on this?
I too want to use OTG functionality while charging phone in the official car dock.
USB OTG + charging
I'm actually trying to get the same get something like this going on a galaxy s2 (the I9100g with the omap processor) or a GN, My goal is to get usb host and charging going through the same cable. By making some changes in the kernel i've got the phone to think its in charging mode while in host mode, but if you check the battery status, it's still draining even though it says "charging" and I've got the a usb "Y" cable connected to a 5v 2amp power source.
I think cyanogenmod (there was a post on this here and a standalone app that eventually rolled into the latest cm7 nightly) has this working on a BN nook color (also TI-OMAP Processor), but I have not been able to verify this.
Does anybody have host+charing working on any device with an OMAP processor?
Sorry for the delay, I had an emergency work trip offshore on an oil rig. I can try it out tonight.
Results. Charging OTG killed pogo charging. I tried mounting in pogo charger with OTG already attached mounted with a basic thumb drive. Charging never started. I tried charging with pogo first, then plugging in OTG, charging stopped. I checked to make sure it was actually discharging by waiting for a few percent decrease.
Sorry, I was hoping it would work too.
subvertz said:
Results. Charging OTG killed pogo charging. I tried mounting in pogo charger with OTG already attached mounted with a basic thumb drive. Charging never started. I tried charging with pogo first, then plugging in OTG, charging stopped. I checked to make sure it was actually discharging by waiting for a few percent decrease.
Sorry, I was hoping it would work too.
Click to expand...
Click to collapse
Thanks for giving it a try. It would be interesting to know if this behavior is built into the hardware or could be modified via software/in the kernel. It's consistent with what happens when using a powered USB hub.
Other than a software mod, I'd sure like to see someone start making and selling an Accessory Charger Adapter as described in Chapter 6 of the USB Battery Charging Specification document from 2010. It's the exact thing needed to use USB OTG and charge at the same time.
Anyone knows if its possible to charge via USB, with a device connected?
I connect an adapter microUSB to USB OTG, than connect USB OTG in a USB HUB and than i connect a device in one USB and force in another, is it possible or not??
It may work, since connecting to the pc works.
I recently got a LG G3 and I want to use it the same way I did my RAZR (XT912). I had a OTG cable going into the data end of a y-splitter (USB data in with a USB power and a mini a in) with the power end going into either my computer or a USB wall charger and the mini end pulling from a USB hub. The result being I can use multiple USB inputs and it was able to charge the phone as well.
With my G3 I was able to get it to find both my HDD and my flash drive I have going into the hub as well as a PS3 controller plugged directly into the hub but it won't charge for some reason even with my USB devices unplugged from the hub. I did notice periodically my clock app will show a charging symbol next to it like its charging even though its losing power.
Is it possible that I need a stronger power signal going into the y-splitter for the G3, a new y-splitter, or a entirely different setup?
I really don't want to have to root it if I can help it but I'm thinking that might be why its not allowing power in. Then again I'm not a master with this sort of thing so I could be wrong.
Also if someone knows if there is someway to get Slimport to work with charging and OTG input that would be good to know although I don't think that is possible
***update***
So I dug out the ac adaptor for my USB hub, then hooked my G3 up to the hub like before with nothing else in it and left the screen off for a hour or so and it charged it like 2% even though it said it wasn't charging.
So it looks like it is working but there not enough power. Anyone have any idea on how to get more power going into it?
There are 3 parts to charging.
The power supply need to have a voltage in the acceptable range. Generally not an issue.
The power supply needs to be able to output enough amps. If it is too low, you will often see a slow charging message.
The cable to your phone must have a low enough resistance on the wires supplying power. If the resistance is too high you will get a voltage drop on the wires.
A power supply with higher amp output and/or a lower loss cable on the path from the power supply to the phone are likely the issue.
If your connection is OTG-splitter-another_cable-power_supply, both splitter and another_cable add resistance on the path to power_supply.