Database Develop

New power supply for XDA and Digitraveler GPS.

:roll:
O.K. Been a while since I have posted but here goes the new mod. I had wired in an old Ericsson car charger to the modded IPAQ connector to supply 5 volts to the XDA for power. Problem was I still had to use batteries or a seperate power supply for the GPS.
The cable that runs up to the GPS is a standard phone line RJ11 connector (3 wires). The GPS has a six wire RJ45 connector on the circuit board. What yo have to do is to replace the black wire (three 3 wires in it) with a four 4 wire phone cable. You will have on extra wire. We will use this for our power running up to the GPS. Connect this to the + 5 volt wire running in from the car charger. Connect the black to the ground and the green and yellow toio the data contacts on the PDA connector. Look at the two RJ11 jacks and use the correct wires. Now connect the black to the ground running in on the car charger.
Next unscrew the case on the gps. You will need to solder two jumper wires across from the RJ45 jack over to the standard power connector. Run a jumper from the - on the poer supply over to the pin that had the black wire connected to it through the RJ jack. Next run a jumper from the power jack + over to where the red power wire runs up providing 5v. Now it doesnt matter if you have batteries in it or not you will have power from the car charger being plugged in.
Will try to piost some pics.
Here is a link to the previous mod for the IPAQ cinnector.
http://forum.xda-developers.com/viewtopic.php?t=2244&highlight=digitraveler
Dave

Thanks for that, makes it a much more tidy job.

usb cable defy+ different than normale ones

My defy+ cable has on the mirco side two metal pins on each side. Normale cables got only two metal pins on the wider side of the mirco side.
Do you follow me? I made picture below had to use * because spaces will disapere when posting
Defy+
**'***'**
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*\***/*
------
**'**'**
Normal
**'***'**
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*\***/*
------

Sorry, I don't understand you, but you can use standard microusb wires for data and charge with your Defy+ (I usually use a Samsung usb wire)

The cables i used on my htc Desire wont charge or are only use full for date transfer. When i trie to charge true my charger or car charger. It start charging and within a second i got a message that it is unconnectend and then connected again. And it loops.

taarmen said:
My defy+ cable has on the mirco side two metal pins on each side. Normale cables got only two metal pins on the wider side of the mirco side.
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Those aren't "pins" in the sense of providing data signals or charging current. They are more like small springs designed to improve the mechanical retention of the micro USB plug in the socket. They don't make any difference to the electrical or electronic function of the USB cable, beyond reducing the risk of a poor physical connection, or a loss of physical connection if the handset is moved which charging/transferring data.
My Blackberry charger's micro USB plug doesn't have them , but the short USB to micro USB cable which came with my noise-cancelling headphones does - and the only function of that cable is to charge the battery in the headphones. I think you will find that there are a number of subtle mechanical variations of this kind between micro USB plugs from different manufacturers.

taarmen said:
The cables i used on my htc Desire wont charge or are only use full for date transfer. When i trie to charge true my charger or car charger. It start charging and within a second i got a message that it is unconnectend and then connected again. And it loops.
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Click to collapse
I used with my Defy+ usb chargers and usb cables from Samsung Wave and Blackberry 8990 and all of these works property for charging and for data transfers.
Maybe your HTC usb cable don´t work propertly?

elTorres said:
Maybe your HTC usb cable don´t work propertly?
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Click to collapse
Other possibilities are that the charger is faulty or providing a charge current which is slightly outside spec, or that there is a problem with the battery. I have seen problems caused by both of these kinds of fault (with third-party chargers and batteries) when using my Motorola USB cable.

[Q] Droid 4 charging standards

I'm trying to make a fast charging cable for use in the car. The current charger I use seems to work fine, but the coiled cable annoys me. When I use a standard USB cable the charging reverts to slow mode which means the GPS and screen drain the battery faster than the cable can charge it.
The charging cable that works has a resistor between ground and the unused pin 4, but what I want to know, is this the only USB charging standard that the Droid4 supports, for example does it support the one where you put a resistor between the two data pins, or the one where you just join the data pins together?
If it supports either of those, then this project just got a lot easier as I can just chop the Type A connector off my USB cable and do all the work without having to solder a Micro USB connector.

Could you de-solder the coiled cord and solder in a micro USB cord or even a female USB cord for removal of OEM usb... or is that what you mean in the last paragraph... If you want I could give it a try as I have three rapid car chargers and several USB cables...

Lum_UK said:
I'm trying to make a fast charging cable for use in the car. The current charger I use seems to work fine, but the coiled cable annoys me. When I use a standard USB cable the charging reverts to slow mode which means the GPS and screen drain the battery faster than the cable can charge it.
The charging cable that works has a resistor between ground and the unused pin 4, but what I want to know, is this the only USB charging standard that the Droid4 supports, for example does it support the one where you put a resistor between the two data pins, or the one where you just join the data pins together?
If it supports either of those, then this project just got a lot easier as I can just chop the Type A connector off my USB cable and do all the work without having to solder a Micro USB connector.
Click to expand...
Click to collapse
I'm not sure if this has anything to do with your question but try an ipad or tablet charger (2.1 Amp) which i use on my droid 4 and charges it fast.
Regular chargers use 0.7 to 1.0 Amp. I know tablet chargers are bulky but they tend to charge your device faster.
Also maybe this thread will work for you: http://forum.xda-developers.com/showthread.php?t=1984838

I'm using a 2amp car charger with a USB socket at the moment and I assure you it isn't charging at that speed. The other charger with the coiled cord does charge at the higher speed, but it also has the odd wiring.
That thread is interesting, is exactly the kind of thing I was talking about, but I'm looking for confirmation that it will actually work with the Droid 4 before I start hacking up cables. The Droid 4 seems to be fussy about which chargers it will work with, my 2amp charger worked fine with the HTC Desire Z, for example.
Another part of my reason for doing this is I want to use the right-angled USB plug that is on my USB lead, but that Micro USB connector is sealed and unmodifiable.

Lum_UK said:
I'm using a 2amp car charger with a USB socket at the moment and I assure you it isn't charging at that speed. The other charger with the coiled cord does charge at the higher speed, but it also has the odd wiring.
That thread is interesting, is exactly the kind of thing I was talking about, but I'm looking for confirmation that it will actually work with the Droid 4 before I start hacking up cables. The Droid 4 seems to be fussy about which chargers it will work with, my 2amp charger worked fine with the HTC Desire Z, for example.
Another part of my reason for doing this is I want to use the right-angled USB plug that is on my USB lead, but that Micro USB connector is sealed and unmodifiable.
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Click to collapse
I'm not sure but there is a radio called ihome ic50 (Google it) i own it and it has a special switch which the manual says if the device has a proprietary charging protocol flip the switch. I made a quick test and it charges in both ways. I'm pretty sure your idea will work as long you know what you are doing. BTW the ihome ic50 is pretty cool for any android device.

Galaxy tab S5e pogo connector pinout

Dear all,
Just wanted to avoid spending some cash on Galaxy tab S5e stand. So short research on net show some pinouts of pogo connectors, and seems that Galaxy tab S5e uses USB pins .
So took multimeter, and found that first pin (counting from USB socket side) is GND.
Number 4 is 5V . Middle two I guessed are USB D+ and D-. But whatever combination (#2D+ or opposite D-) no success. Tablet is charging but in slow charging mode (seems to be 0,5A) . That is not so bad for me , as night is long enough to charge full easily. But anyway I would like to know what middle two pins can do. I saw on net some suggestions to use resistors, so tablet would try to charge at 2A , but none diagram works. To clarify , I have official charger and via USB cable , it charges fast.
So finally question... Do you know how to make USB connection via pogo connectors (so tablet could recognize charger, and maybe use for other USB devices)?
Or what are two middle pins for?
Here photo of my Poor's man dock. During photo there was no middle pins connected, but believe me , tried many options.
Edit, as I am new user , I can not paste links, but after 10 posts , I will update.
Edit 2 as I can not paste links, but if someone interested in photo , add http by yourself...
m.imgur.com/a/rPTQCYA

After one month of testing , I cat tell you that it is not necessary to figure out middle pins.
The device charges slowly (somewhere was written that it is limited to 0,5Ampere), but it is ok for me as during night it will be charged full anyway.
Device also activates nicely "daily board"with clock and looks nice.
I recommend this DIY stand. Made of old ethernet socket for pins, and USB printer cable.
Below link to photo how it looks like. I plan to paint it.... someday
m.imgur.com/a/jCGKCZX

Shame about the slow charging limited to 500mA. I've been looking at various tablets to potentially replace my 2019 Galaxy Tab A 10.1 in the car dash. Currently (no joke intended) having a fight with things to do with hub passthrough charging and the tablet taking over the role of power supplier when the car powers down....having pogo pins as an alternate charging method might present something useful as a fix, but 500mA doesn't exceed battery usage when powered up. Have you asked anybody that owns one of the docks to crack it open and see what's inside? Back when I had a Nexus 7, the four pogo pins on the dock corresponded to power and audio out via a 3.5mm jack in the dock.

One thing to keep in mind here that Samsung supports - and requires - QC3.0 for fast charge. So, you would need a source with that standard and if you want to verify (altghough the remaining time would immediately tell you) a suitable in line power trap.

Galaxy Tab Active2 pogo pinout

Does anybody know what is the pinout of pogo pin connector of Tab Active2? Samsung itself does not provide much accesories so I'm quite conviced that it should be somewhere revealed.

A few months on - have you made any progress? I'm looking for the same.
The most I've discovered so far is that the power comes in through two of the three centre pins.
There's a post with a photo on another online forum : https://advrider.com/f/threads/ultr...hones-my-guide.1206076/page-115#post-36686010

pinout
pin 1 idk
pin 2 idk
pin 3 ground
pin 4 v in (idk voltage)
pin 5 ground
pin 6 idk
pin 7 idk
i thought it might be normal usb 2.0 (something like +, -, ground, v, -, +) but idk only pins which aren't open lines with the usb port (only ones where the multimeter beeps in diode mode) is ground (pin 3 and 5) i know about the volt pin from a picture of a charging dock (edit: oh i forgot, that ^ picture)
i expect that pin 4 is just 5v in, but idk. if you find out more, please let me know

I got my hands on a Galaxy Tab Active 2/3-charging dock (made by Brodit) yesterday. It's only equipped with the center three-pin-connector, has a short tail of cable with a 6-pin-connector (looks a bit like the one for PCIe grapics cards but only three pins are used) and comes with a suitable car power adapter.
I first opened up the car adapter, since I've anyway planned to user an wall adapter.
It has a three pin output:
yellow (thin): marked as "FB" (Feedback?)
red: Vout
black GND
The rating on the car adapter said 5VDC 3A
I connected my scope to FB and checked if there happens some sort of feedback, but nothing between 1s/div and 1µs/div): FB was simply high/5V as soon as the adapter got powered and all cables were connected, wheter the tablet was in the dock or not. So, probably not pogo-pin-relevant, although i guessed for something like charge speed detection, powering off the charger if no tablet is connected or cycling the charger off and on according to the charge level. Nope.
Checking the wiring bewteen charger and dock-pins by multimeter in diode-mode releaved the magic:
pin 3 GND
pin 4 Vout(5VDC) +FB
pin 5 GND
Since it seems to be all about symmetrics, for those who are interested in establishing a data connection it would probably an idea to guess something like
Spoiler: this
1 d-
2 d+
3 gnd
4 5VDC
5 gnd
6 d+
7 d-
?
If anyone needs further investigation on the dock or original charger, please feel free to ask!

sebidoodle said:
I got my hands on a Galaxy Tab Active 2/3-charging dock (made by Brodit) yesterday. It's only equipped with the center three-pin-connector, has a short tail of cable with a 6-pin-connector (looks a bit like the one for PCIe grapics cards but only three pins are used) and comes with a suitable car power adapter.
I first opened up the car adapter, since I've anyway planned to user an wall adapter.
It has a three pin output:
yellow (thin): marked as "FB" (Feedback?)
red: Vout
black GND
The rating on the car adapter said 5VDC 3A
I connected my scope to FB and checked if there happens some sort of feedback, but nothing between 1s/div and 1µs/div): FB was simply high/5V as soon as the adapter got powered and all cables were connected, wheter the tablet was in the dock or not. So, probably not pogo-pin-relevant, although i guessed for something like charge speed detection, powering off the charger if no tablet is connected or cycling the charger off and on according to the charge level. Nope.
Checking the wiring bewteen charger and dock-pins by multimeter in diode-mode releaved the magic:
pin 3 GND
pin 4 Vout(5VDC) +FB
pin 5 GND
Since it seems to be all about symmetrics, for those who are interested in establishing a data connection it would probably an idea to guess something like
Spoiler: this
1 d-
2 d+
3 gnd
4 5VDC
5 gnd
6 d+
7 d-
?
If anyone needs further investigation on the dock or original charger, please feel free to ask!
Click to expand...
Click to collapse
I know this is an old thread but did you ever create your own charger dock with this info?

katanabladesman said:
I know this is an old thread but did you ever create your own charger dock with this info?
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Click to collapse
No, I use the Brodit 513697 dock. The pogo pin-out for GND and +5V is confirmed though, so if you're good at 3D modelling and printing and can fit small spring pins, you can certainly build your own charging dock.