Hello!
I have a Android phone (SG S4mini) that i put on my car to work with TorqueOBD2 and GMaps apps.
I'm from Salvador, Bahia, Brasil and here is super very hot place. And so, to avoid start a fire on my veichle I remove the phone baterry, put a Buck Converter (12v for 3.7v) and connect on post ignition key, direct on baterry terminals (soldering)
All works perfect for a long time till now. But my only problem is: i need manually turn on the phone every time I turn on the car.
So, I need a way to automatic turn on my phone on when voltage (or current) is detect on baterry.
Just to be clear, is not boot when charging, because I do not use the charge port. Is BOOT WHEN VOLTAGE/CURRENT IS DETECTED ON BATERRY TERMINALS.
Plz I really need help!
Related
So, got a phone from a friend, X10 - not rooted, which does not work at all.
Whenever I want to turn it on, LED just blinks 3 times, that's all I "got"
I have tried removing battery, SDCard and SIM Card but still no go!
Any idea or help would be much appreciated
try this
use the flash tool and reflash a 2.1 sony rom you can easily get your phone to dev mode even with out having to turn it on
http://forum.xda-developers.com/showthread.php?t=920746
you must get back on track after that!
Ok, will try it
Not working, Downloaded Flash Tool and 2.1 *.ftf image, when I press flash and select image, I press on back button and connect X10, but no go, Flash toll says: 9/044/2011 17:44:23 - INFO - Searching Xperia....
19/044/2011 17:44:23 - ERROR - Please plug you device in flash mode
And X10 only gives impulsing red LED light!
Try with SEUS, wich will install the flash drivers for X10 in your PC, I assume you're using Windows.
Or look for these drivers, can't give you the link right now, some research will help.
I installed PcCompanion before Flash Toll, will try with this software, but I am sure it will be same...will see soon!
bah....same
a few months back ago i remember someone solving this problem... try searching the forums
NVM. Found it, there you go http://forum.xda-developers.com/showthread.php?t=944322&highlight=red+led+death
Nice one, will try it later today!
Does not help, after I connect it to charger (with removed battery) there is green light, but after I add battery after one/two mins led turns off, and whatever I press Xperia does not respond!
I tried than removing it from charger and turning on, but same, no response, after I remove and add battery, if I try to turn it on Red LED of death is still here.....
...nosi u servis..nema druge ))
If u can mesure the battery voltage, and if is below 3V it seems the battery will not receive any more current and the phone need more power to bootup than charger can provide, or phone detect the low level and don't start. This is a theory. If it's above 3.7V the problem is from other part.
Sent from my X10i using XDA App
the ultima looks like k800i with full touch scree. i like it!!!
hey Benko, if ya dont want it, ill take it off your hands, ill even pay shipping!
had to ask
I tested my theory about battery level and seems to be right at first look. I put a DC power supply instead of the battery an if i put about 3.2 V and below then i connect the usb cable to PC the phone don't start only flash a red led and start pumping about 3.6V for charging the li--poly battery. so the problem seems to be the battery. The problem with li-poly battery is if them drop voltage below 3.4 V is very hard to charge them back.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Now what u have is to try to put about 4V on the phone terminals an to see if it starts.
go to ebay and buy a new battery
The evidence points to a bad battery. Head to your local wireless store and ask them for a compatible battery to test it out.
Charge the battery with a 5VDC power source, take one usb cable and cut it to get the wires, then use the computer or the original charger to force some juice into the battery.
//Niclas
Possible solution!!!
nan_a said:
I tested my theory about battery level and seems to be right at first look. I put a DC power supply instead of the battery an if i put about 3.2 V and below then i connect the usb cable to PC the phone don't start only flash a red led and start pumping about 3.6V for charging the li--poly battery. so the problem seems to be the battery. The problem with li-poly battery is if them drop voltage below 3.4 V is very hard to charge them back.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Now what u have is to try to put about 4V on the phone terminals an to see if it starts.
Click to expand...
Click to collapse
Well, i may be wrong, but as i have been able and still use batteries that already have completed 10 years i can tell that (not confirmed) this battery starts at 3.2v and is fully charged near 4v.
I just checked my battery is charged at 90% and measuring it i got 3,93v
The best way to know for sure if it is the battery or not is to get a source with at least 500ma to supply a recharge directly to your battery, if it starts getting hot above like 40ºc you should disconnect wait to cool and reconnect until gets near at least 3,9v.
To make sure the battery is charging try to measure the amount of current ma it is charging at.
If the battery is nearly dead or dead it will still charge but in speeds like less then 10ma above this it will be charging but will take a day maybe, but you must take care on this, the current will grow as the battery gets charged exponentially.
Once charged at near 3,9v input the battery without closing the back cover and check if it works.
Wait it to cool**** you need to wait really at least a bit so you can notice if it is getting hot again on next step.
Once the phone turns on, check if the battery is getting hot again even a bit.
The battery can't get to hot only by turning the phone on, if this happens your phone can have one of two problems:
Phone has a short, sorry, damm.
Phone has a software(rom) that is draining the power.
Using external power to connect to the phone while it is connect to usb or power source can break your phone, don't do that never.
Charging voltage must be at start near 4v to 4,5v, if it gets to charge to fast keep an eye on it to not get too hot, it can even blow if passes beyond 70ºc (i melt plastic once doing this, rsrs)
I hope this works, took me awhile to check the correct voltage for this, rsrsrsrs
Hi,
i have a european htc flyer with LeeDroids actual custom rom (GB).
Today I drove my car, while charging it with a special 12V - Micro USB-Car Cable.
I tried google navigation and some other features and after that I chose HIBERNATE from the power-menu.
After half an hour I wanted to reactivate the device but everything I try - it simply wont start. display stays black, i tried every button (including the combination to bring it in the recovery mode). nothing works. the red light next to the power button is on (as if it is still loading).
has anyone an idea, what i can try to start the device, is it a brick? what about garantuee in this state? what should i do??
please help, thx
You need to give it time on the proper wall charger. Red indicates a completley depleted battery. I don't think you'll get what you need from a usb charging mode at this point. It could take some time to revive if you've push the battery far enough to deep discharge becasue the initial period will be used to recondition the battery at very low current.
...has been on the wall charger for hours - no effect
Can you plug it into the PC and see if it detects anything at all and if it does what is that. The other possibility is that you've somehow ended up in download mode.
I ended up in download mode on my original incredible. Not fun. See if it boots if you plug it into the pc. If so, I know how to fix it.
Sent from my HTC Flyer
nothing detected when plugged in via usb onto my pc
tried also adb shell, sais no connected device
think its really dead...
i have a flagship store in town, bring it in tomorrow -keep you posted, what the problem was/is
Let Lee know too if you haven't already just in case there is something in the code causing problems. That way he can pull it to keep other people safe.
Hi,
I have been trying to find a way to use an android phone for real time GPS Tracking of my car.
Now the problem I am facing right now is like this:
1. Phone would be attached to a charger (hidden)
2. Phone would be programmed to switch on an app with GPS
3. Now if the car is switched off the phone should still remain ON till the battery drains since the charging would happen only when car is switched ON
4. I have seen a lot of custom roms like Cynogen and MIUI and there is a case that if my phone is off and I put the phone on charging then the phone switches ON automatically.
5. But the problem is that suppose the battery is 0% and the car is switched ON the phone would start since the charging would start and suppose the charging gets the phone to like 10% battery then if the car is switched OFF then the phone would switch OFF ( I want that the phone should remain ON)
Since I would not have access to the phone as it is hidden it would be difficult to manually switch the phone ON.
Is there any way to ensure that the phone remains in the ON state even after the charging has been withdrawn.
I am also looking for some informatio similar to what you have posted. Strange, no XDA member has replied till now..
adityaduggal said:
Hi,
I have been trying to find a way to use an android phone for real time GPS Tracking of my car.
Now the problem I am facing right now is like this:
1. Phone would be attached to a charger (hidden)
2. Phone would be programmed to switch on an app with GPS
3. Now if the car is switched off the phone should still remain ON till the battery drains since the charging would happen only when car is switched ON
4. I have seen a lot of custom roms like Cynogen and MIUI and there is a case that if my phone is off and I put the phone on charging then the phone switches ON automatically.
5. But the problem is that suppose the battery is 0% and the car is switched ON the phone would start since the charging would start and suppose the charging gets the phone to like 10% battery then if the car is switched OFF then the phone would switch OFF ( I want that the phone should remain ON)
Since I would not have access to the phone as it is hidden it would be difficult to manually switch the phone ON.
Is there any way to ensure that the phone remains in the ON state even after the charging has been withdrawn.
Click to expand...
Click to collapse
Speaking about problem 3,
If you are using built-in plug in car(with circular hole of charger) then it is routed through ignition key. So you will have to create new wiring from battery so charging will be independent of starter.
Sent from my GT-S5360 Gadget of Mass Destruction using xda-app
Using CWM........Busybox Commands........No I use my hands
Please help! My dear friend asked me to fix her broken 610 from what I couldn't even restore to the original ROM. I've tried to download some roms that were as close as to the device that I have (a Polish PLAY.pl 610) but unfortunately couldn't load it through fastboot, adb or recovery. But that's not the subject right now.
All was ok (I could boot it up to fastboot), but one night I sat it down, and the next day it was dead.
- The orange diode doesn't light up when plugged to PC/socket charging
- Power, Power+VolUp, Power+VolDown, none of the combination work, the screen doesnt even flicker
ALL that shows that it is there, is a QHSUSB_BULK unknown device in Windows Device Manager...
Is there a way to fix it? I didn't manage to flash the ROM I just rooted it with HTCs tools, the next day it was like this.
Thanks!
Enstriel said:
Please help! My dear friend asked me to fix her broken 610 from what I couldn't even restore to the original ROM. I've tried to download some roms that were as close as to the device that I have (a Polish PLAY.pl 610) but unfortunately couldn't load it through fastboot, adb or recovery. But that's not the subject right now.
All was ok (I could boot it up to fastboot), but one night I sat it down, and the next day it was dead.
- The orange diode doesn't light up when plugged to PC/socket charging
- Power, Power+VolUp, Power+VolDown, none of the combination work, the screen doesnt even flicker
ALL that shows that it is there, is a QHSUSB_BULK unknown device in Windows Device Manager...
Is there a way to fix it? I didn't manage to flash the ROM I just rooted it with HTCs tools, the next day it was like this.
Thanks!
Click to expand...
Click to collapse
Sounds like a dead flat battery. Take it to a phone repairer and get them to give the battery a boost charge . You can do this your self if you know what your doing but these battery's can explode if you don't know what you doing and you'll need the right equipment, so if YOU DECIDE to try this be very careful (I am not responsible for any damage that may occur if YOU DECIDE to attempt these repairs yourself).
- remove the phones back cover
- disconnect the battery
- connect the battery (with correct polarity) to a bench top power supply with the voltage set to 3.5 volts DC and current limit set to 150 mA (this is very important, incorrect polarity or power supply settings may result in flames or explosions) and monitor the battery voltage. Once it is above 3 volts you are done.(if the battery seems to be getting hot at all during this process stop immediately)
- reconnect the battery and and give it a full charge as per normal in the phone.
Hi,
long story short: I connected my Z5C to a bad (apparently, I don't want to test ) charger and now I have some strange issues. Is there any change that my h/w isn't fried?
Full story: As I said I connected my Z5C (newest CyanogenMod provided here) to a charger and it instantly did a hard reset. Afterwards it did turn on and continued to work for some time. As I was on the road at that time I could not charge it elsewhere and later that day it ran out of power. When I tried to charge it with a known good charger some days later, it did not boot. I suspect the boot process to healthd or whatever draws this cool animation takes more power than my working but small charger provided.
It did charge at my laptop, especially when I put it into fastboot mode.
Now thats where I am stuck; the phone won't turn off completely and keeps rebooting when I turn it off (via os menu or hard reset, no chance).
I can charge it after it runs out of power (managed to charge to 100%), but it won't charge if I unplug and replug it. It is not recognised by a pc after I reconnect it one or two times (checked with device manager and lsusb), only chance to get to fastboot or flash mode again is drain the battery to 0%. It does show a loading animation and I can boot into android from there. Battery drain in Android seems to be a little higher than usual (100 to 0 after 2 1/2 days of pure standby without any radio stuff on).
I have already reflashed the original Sony firmware and erased everything that came to my mind (cache, data....).
Any hope that I did not kill some piece of hardware?
Thanks for your answers, any help appreciated
tell me more about your z5c's software, why you mentioned Cynogenmod? did you flash it with cynogenmod?
seems to me that z5c was running on custom rom and did not support fast chargers and bricked your device!
if that so, try flashing it using flashtool with original stockrom.
i don't wana go in to details however there is possiblity that battery.sys file is corrupt and atleast I was never able to fix my LT18i when it got bricked and battery status use to become zero in 2 seconds and android keep rebooting, later it got silent for good! no charge no nothing and i still have the device sitting. I was running it on coconut (cynogenmod) when all this happened!
Thanks for your reply.
The charger was no kind fast charger, just a common 12V to USB adapter with an output of 800mA (when it worked). I was running CM 13 when I connected it to the bad charger, but as I mentioned I have since then reflashed it with Stock ROM. No real improvement.
I have continued trying and I found out that the device seems to believe it is still connected via usb.
Code:
cat /sys/class/power_supply/usb/present
gives me "1" with nothing connected, can you check if this is normal?
The file is -rw-r-- r--, would changing its value change anything or is it just some kernel thing (can't check, don't have root permissions now as I flashed Stock ROM)?
Also after I charged it on my PC today it still shows me the notifications for USB connection and adb (I can add a screenshot if necessary), also looks like it still believes to be connected.
It seems I found the solution: I was playing a bit with a USB-OTG adapter (the ones to connect regular usb devices like keyboards or storage to your phone). After I connected a USB keyboard I tried (just for fun) if the Linux "Magic" SysRq hotkeys were enabled. So I did press Alt-Print-o, which is the Linux hotkey for "turn off now". It did not turn off, it also stayed off (no instant reboot). After I started the phone again it also properly turned off via the power menu!
I will have to test whether the charging issues are fixed, too, but as far as I can tell the problem seemed to be something software-related
Sadly did not work for long. I think I will go for official repair, think this is still cheaper than buying a new phone (after completely killing it with some DIY "repair" attempt). This annoying brick simply does not turn off, no matter what I do (apart from draining battery to 0%). Guess its my fault, still to afraid to try that broken charger again.