yashsingh1/xdaforums huggingface dataset:
[Eee Pad Transformer Accessories] jdh2550:
Hi Bob,

*Awesome work*.

I don't know your budget - but you can get a scope for less than you paid for the dock:

(go to Saelig dot com and search for xprotolab) - just $50 but you do need to "wire it up"

-- or --

(go to Sparkfun dot com and search for DS Nano) - $100 ready to go

They're simple - but they should be fine for this sort of work. I don't have either - but that sparkfun one is tempting me (but the CFO (aka wife) would not approve). If I did have one I'd happily lend it to you (go on persuade me to buy one!) - to support your community endeavors.

I just found this thread while searching for the connector pin out - I have a pad and dock. I'm probably too much of a klutz to risk doing my own mod though.

(as a newbie I can't post links).
[Eee Pad Transformer Accessories] Bob Smith42:
@jdh2550

That is pretty amazing. Thanks.

I like this video (review vs marketing):

http://www.youtube.com/watch?v=1XyCSzfypRM&feature=related
[Eee Pad Transformer Accessories] Bob Smith42:
I got a bunch of sockets in for the charging plug. I evaluated them and updated my post #17 in this thread. Please see update here.
[Eee Pad Transformer Accessories] Bob Smith42:
I got the reed switch and magnet samples. Some part changes are required, so I updated the information in post #31 on this thread
[Eee Pad Transformer Accessories] DevCake:
Woh, nice , ordering one now.
[Eee Pad Transformer Accessories] Bob Smith42:
Design Help Request

I designed a circuit for the barrel mod to power dock and reed switch to save battery. However, I do not know what type of components can perform the required tasks. I need a relay switch that can be activated from two separate power sources (simultaneously, if such device exists) or maybe two relay switches, or something else (I do not have knowledge of...).

Here are the required tasks:

A) Barrel Power (JK1 - e.g. jack for mod)

-- disable proprietary cable socket (CAB1, e.g. proprietary cable)

-- also charge tablet (dock closed)

B) Proprietary Cable Power (CAB1 - e.g. proprietary cable)

-- disable barrel power (JK1 - e.g. jack for mod)

-- also charge tablet (dock closed)

C) No power

-- Save Battery (dock closed)

Otherwise, I can simply hard wire the Barrel Power (jk1) jack in parallel with the proprietary socket. Hard wiring has disadvantages mentioned by DevCake, so component suggestions for A,B,C above needed.

If we sense power on CAB1 or JK1 (must be either/or) then we need a switch to circumvent the reed switch when tablet is closed. This will allow the tablet to charge from either CAB1 or JK1 when tablet closed, but if power not detected will go in Save Battery mode (e.g. disconnect dock power from tablet).

I suspect this is some wild double, triple, quad or such relay switch or switches. If anyone can assist or advise I will appreciate your help. :)

Thanks

PS: I am starting to appreciate why ASUS did not implement these items. ;)
[Eee Pad Transformer Accessories] Tera Tike:
@Bob:

You can use a single relay that is SPDT. Hook power input to the coil on the barrel connection. As for the non energised connection side of the SPDT it would default to the 40 pin connection and the other would connect to the barrel input. so it you apply power on the barrel connection the relay would energis and send the charge thru the SPDT energis connection. I hope this is understand able....

This is just a suggestion.

-Mark
[Eee Pad Transformer Accessories] Bob Smith42:
Okay, I found something. It happens to be DPDT, but not much different. Really hard to find something that meets volt/amp specifications and fits in the dock and is inexpensive.

Thanks.
[Eee Pad Transformer Accessories] Bob Smith42:
Tablet mod for barrel plug charging

Well, it might be possible. I am liking this idea more now.

The exact challenge is soldering a single wire on three pins, where the pins have 1/2 mm (one-half millimeter) spacing. I do have a soldering iron with sub-mm tips, but I do not know if I have the skills. Basically its a 1mm wide solder point that touches all three wires on a surface mounted socket on a board inside the tablet.

There is no room for a switch to disable the port, but that is not a major problem because the port can be placed next to the current proprietary cable socket. In this position it is blocked with a dock connected. In tablet only mode you would *not* be allowed to plug in a barrel charger and the proprietary cable at the same time (or else boom). Again, there is no room in the tablet to put a relay to prevent an idiot from attempting to kill themselves.

For those interested, the three power positions (matching proprietary cable) on the 40 pin surface mount socket (single row in-line) on the main motherboard are #7, #8, #9 if you were counting while oriented in a clockwise manner around the edge of the tablet.

If I attempt this mod I will post some pics.

Good luck.
[Eee Pad Transformer Accessories] Bob Smith42:
Happy days on tablet mod (barrel plug charging)

Sorry if this is off topic, but at least it is related. ;

I modded my tablet, successfully.

I added a 2.5mm barrel jack socket, with wires carefully soldered in two tiny positions. The positive wire to the #7,#8,#9 positions (spoken earlier) and the negative to the battery socket ground. It was medium hard, and it requires specialized equipment, tools, and skills (in my case luck).

I am 90% sure there is no 15v exposed anywhere inside the tablet, other than on the proprietary cable surface mount. I tested hundreds of points and could not find it. I think it goes down into a layer in the board and up into some chip. I noticed one +5 volt point near the socket, but that is all.

The tablet only charges (settings say *charging ac*) with my DX-UA wall plug at 15v. You have to unplug the DX-UA voltage slider, because with the 10.8v it provides is not enough to trip the *charging ac* status. It is likely only a trickle charge at 10.8v.

I have to wait for the glue to dry on the socket I placed before reassembly. I have to drill a hole in the bezel to expose the mount and a few other simple tasks. I will post a few photos later.

Dock mod next week should be exciting too.

PS: Another thing in case someone gets all excited and wants to tear apart their tablet. One thing I figured out after some head scratching, the ribbon tapes on the motherboard are held down by a small strip that is actually a hinge. You flip it up away from the ribbon tapes and it releases, flip down and it locks. I will recheck later, but I think you do *not* need to remove the motherboard to accomplish the mod like me. Good luck!
[Eee Pad Transformer Accessories] Bob Smith42:
Proof

If you are really paying attention in those pictures, you might have noticed something strange.

The hinge, that holds down the ribbon, slides on/off the pins (when unlocked). In this picture I have removed it prior to soldering, so it does not get heat damage. :)

The two pics show #7, #8, #9 positions matching cable positive voltage, toggle back and forth looking for the red dots. This is were I soldered the positive lead for my barrel socket.

@glgehman Thank you for your suggestion, you surely made me think to do the mod.

Greetings to @driftspec. Thanks for the photos I used make my plan.

driftspec's album / Asus Transformer
[Eee Pad Transformer Accessories] glgehman:
And yet, now that I have a dock of my own... I have almost no interest in being able to charge the tablet by itself! :D

I basically dock the tablet, close it up and leave the dock connected to the charger overnight. Contrary to scare stories all over this forum, I have found the TF to behave brilliantly. If I leave it docked, but unconnected to charger, the tablet itself ALWAYS reads 100% when I separate them and use it. I have never seen any case where the dock stole charge from the tablet (although I have never tried storing them together with the tablet turned off. I bet this is where people make their error.

But thanks for the pioneering work. I noticed that the various internet vendors for the proprietary cable/charger unit are starting to promise availability sometime in July.

glg
[Eee Pad Transformer Accessories] Bob Smith42:
So, quick update. Still waiting on DPDT parts, but reed switch and magnets arrived.

The new magnet in post #31 works to trip a reed switch mounted inside the keyboard. I put the magnet about 5mm left of the ASUS logo. I decided *not* to drill into the ASUS logo because it is metal - the magnet sticks to it. Also, the ASUS logo is directly over a clasp, holding the top and bottom together, and I did not want to mount my reed switch behind the clasp. The "Neodymium Discs 0.125 inch Diameter x 0.0625 inch Thick" magnet simply drops into a hole drilled partially (not though) in the plastic face of the hinge about 5mm left of the ASUS logo. I used a 1/8" drill bit.

The magnet has to get within about 3mm of the top of the keyboard to open the reed switch (normally closed).

I designed a circuit as in post #49 using DPDT, one diode, and socket for 2.5mm barrel plug that accomplishes all the tasks required. However, I am not sure we can fully implement the protection circuits because of how the proprietary cable socket is mounted. I will post the circuit diagram soon for review and comment.
[Eee Pad Transformer Accessories] Bob Smith42:
Dock mod circuit diagram (two plans)

Here are two circuits I designed to meet the requirements listed in post #49. See attached diagram.

(1) The green lines control whether the dock charges the tablet. We have switched SW1001 off and reed switch RD1 controls.

If tablet open the dock charges the tablet.

If tablet closed then either power from ASUS Proprietary 40 pin cable, or 2.5mm barrel plug jack JK1 *always* charges both the dock and tablet. It does not matter if the tablet is open or closed.

(2) The red lines are 15v power from the ASUS Proprietary 40 pin cable to the 15v positions on the dock's circuit board CKT BD, and center pin of JK1.

The top diagram requires a *trick* to disconnect the ASUS Pro 40 from the circuit board (unsure if possible), the bottom diagram leaves the ASUS Pro 40 connection unaltered. The *trick* will have to disconnect the 15v between the ASUS Pro 40 (all three lines) and circuit board CKT BD. See if you can help from pictures at: post #39. The *trick* involves cutting through pads on the circuit board CKT BD and/or removing components, but it *must* disconnect all three power lines from ASUS Pro 40 or it is useless to attempt.

One guess: Maybe that big green spot in the center-right is the termination for all three power pins from ASUS Pro 40. The big black thing soldered in the center bridges the green spot on the center-right to big green spot on the center-left. Maybe the center-left big green spot provides power to the rest of the circuit board CKT BD. Remove the big black thing? Or maybe not. LOL (PS: I have no idea what I am doing. When we lived in the matrix we did not have to deal with this stuff).

Please review, confirm or suggest changes and corrections. For example JK1 and ASUS Pro 40 positions could be swapped. As it is JK1 has priority, but if swapped ASUS Pro 40 would have priority.

I am not an EE. :)
[Eee Pad Transformer Accessories] Tera Tike:
Great work Bob! I have yet had the time to look over your schematic, but I will.

Here is some information about the NPCE791x Embedded Controller in the dock.

It has a high-performance 16-bit RISC processor on-chip ROM and RAM memory with functions including: enhanced PWM, timers, interrupt control, General-Purpose I/O with internal keyboard matrix scanning and I/O expansion support, PS/2 interface, SMBus interface, UART, PECI 3.0, SPI, high-accuracy Analog-to-Digital and Digital-to-Analog Converters for battery charging, system control, system health monitoring and analog controls.

Now if we could get the programming for that controller we could correct the deficiencies about the dock battery draining.

On another note, I found the dock/Pad trip sensor....Take a magnet going 1.875 from the right side of the pad and .5 above the clock will shut the screen off. There is a magnet right below the "+ =" button on the keyboard that trip the sensor when you close up the dock and Pad.

-Mark
[Eee Pad Transformer Accessories] Bob Smith42:
I found the magnet. Really good info. I hacked together a quick reed switch mod to see what happens to the dock battery and learn. Definitely not final.

I think my jk1 and asus pro 40 positions *must* be switched on my diagram. Because the asus pro 40 cable must always have priority over jk1. This way whenever any power is given on asus pro 40 the jk1 will be physically disabled.

I realized this when I see people connecting the proprietary cable to sync music or whatever on a laptop. If the power is via barrel plug it must be disabled otherwise the barrel plug power (15v) will fry the laptop usb.

The followup to this thinking is the circuit board on the dock needs to be tested for a way to disconnect the asus pro 40 cable from the rest of the board. I have a few tests planned this weekend. It is also 10% possible the black box (in the picture) surface mounted to the board between the green areas is a diode instead of fuse. If it is a diode then I can attach the barrel plug in my circuit easier. Its complicated to explain, do not worry if I confused you. I have a revised diagram and will post soon. :)
[Eee Pad Transformer Accessories] Bob Smith42:
Reed swith info

I setup a reed switch across SW1001 with a magnet in the hinge. However, it does not work as expected. But, I may not have positioned the magnet and switch correctly or there is some other misfunction. I will continue testing tonight.

Here are some details of my observations:

1. Testing reed switch (or SW1001) on/off seems to turn off/on battery charging on the running tablet. When tablet is running it turns on/off the charging status of the tablet.

(UPDATED BELOW) 2. With tablet closed, e.g. reed switch open and SW1001 open, the dock still discharges at 3-4% per hour. I have B50K model dock, and this is no improvement with reed switch across SW1001. This may be due to misplacing the magnet/reed switch and I will re-test tonight.

3. With tablet closed, e.g. reed switch open and SW1001 open, plugging power into the dock still charges *both* the dock and tablet. This implies SW1001 does not totally switch on/off power from dock to tablet, or at least charging over-rides SW1001 function.

Therefore, I conclude SW1001 does not totally control power from the dock to the tablet. Further test ideas needed, or suggestions welcome. Can someone propose what is the function of SW1001?

I am looking at another approach to use the reed switch. Maybe I will tap into the positive leads on the dock battery next. An in-line plug and socket pass through adapter with breakout might work.

====

UPDATE:

I found the magnet was not working to activate the reed switch. Either it was too small or I need to adjust the position of the reed switch. So, I mounted a slightly larger magnet for the test last night. I have updated #2 above:

2. With tablet closed, e.g. reed switch opens SW1001, the tablet and dock still discharge. Starting with 100% tablet and 54% dock (I have B50K model dock), closing the tablet (open SW1001) after 8 hours the remaining charge is 92% tablet and 52% dock. While the dock battery is saved the tablet battery is sacrificed. After an half hour turned on, the dock recharges the tablet to 99% while the dock goes to 39%. Not a great result.

The next test tonight is disconnect the tablet and dock to get a baseline.
[Eee Pad Transformer Accessories] Globespy:
wow! You guys are mad scientists, props to you all.

I thought I was 'nuts' when I hard soldered the GPS connection on my vibrant, but this stuff is way beyond my comfortable sensibilities :-D

I will watch and wait from the sidelines, but ultimately I'll hope Asus rectify in a new dock or most likely through software.

Keep up the good work, hopefully someone from Asus is monitoring this forum!
[Eee Pad Transformer Accessories] Bob Smith42:
The solder job in these pictures was difficult. The pins are 0.5mm spacing, so distance across all three power pins is 1mm total. I was not sure I could do it, but it worked out great. This was a tablet mod adding a 2.5mm barrel charge socket - which works great. By the way, that is some Tefzel 28 AWG wire, got it years ago.
[Eee Pad Transformer Accessories] kirksblood:
probably an accelerometer switch only when the dock is connected
[Eee Pad Transformer Accessories] Alvera:
A pinout of battery will help me a lot for some measurement. Anyone can help? Thanks.
[Eee Pad Transformer Accessories] stuntdouble:
Looking for a pinout of the battery too. Has anyone figured this out since the last few years?
[Eee Pad Transformer Accessories] ko3st:
Hi stuntdouble,

Please have a look here:

http://xdaforums.com/showthread.php?p=25372818

I hope it helps.

Cheers, ko3st
[Eee Pad Transformer Accessories] stuntdouble:
Thanks but can't see anything there for the battery, just for the tablet's proprietary 40pin connector. :confused:
[Eee Pad Transformer Accessories] ko3st:
You are right but there are links to the Asus parts website. I guess you can go from there. I hope you can find what you are looking for.
[Galaxy Tab Q&A, Help & Troubleshooting] uhsarp:
Here are the details of my tab

Firmware Version: 2.2

Baseband Ver: I987UCJK1

Kernel Ver: 2.6.32.9 root@sep-57 #1

Build Number: FROYO.UCJK1

Carrier: At&t US

So I managed to root my device using Superoneclick but I'm having trouble running clockworkmod because of a package verification error. I've realized that I need to upgrade my kernel to make it work. But I'm having trouble finding the right kernel/rom. I'd prefer to flash a new rom using ODIN but I'm unable to figure out which rom to use. Can anyone suggest me a rom to choose? I'm confused by jk,jv,ja terminology:(
[Galaxy Tab Q&A, Help & Troubleshooting] rangercaptain:
Flash the rotohammer JME version 4. Then flash chainfire cf root to get CWM. BE SURE TO USE FROYO VERSIONS NOT THE GINGERBREAD VERSION.
[Galaxy Tab Q&A, Help & Troubleshooting] ultramag69:
I believe AT&T is a GSM tab, uses a sim card, so any GSM roms will work. If its doesn't use a sim card look for the CDMA roms.

I would suggest upgrading to gingerbread as that works really well.

The best advice I could give is read any guides on updating REALLY well, go slow, doublecheck what you've done and DON'T skip steps because you read through already.

If you want to keep all your Contacts, Apps ETC... then backup with Titanium Backup before you flash as this will clear it out...

GSM ROM

Go here - http://xdaforums.com/showthread.php?t=888071 it will give you an app thay allows you to check your bootloader.

You may have to go to settings>Applications>unknown sources needs a tick to install.. This allows the installation of 3rd party apps using file manager. Run the app, it will tell you if the bootloaders are locked or ask if you want to unlock... Use at your own risk...

So saying, this was the first gingerbread rom I flashed - http://xdaforums.com/showthread.php?t=1073854

Instructions were - Procedure (ODIN !):

- Download and extract the firmware zip

- Download and extract the attached gt-p1000_mr_PIT.zip

- Download and extract the attached dbdata.zip

- Flash the firmware tar as PDA, repartition enabled, use the attached PIT

- After flash immediately boot into download mode again - wait for it to go to the samsung LOGO here as a whole heap of writing goes up the screen then it reboots. DO NOT TURN OFF UNTIL IT REBOOTS TO THE SAMSUNG LOGO...

- Flash dbdata.tar as PDA (NO repartition) in ODIN again.

- After flash immediately boot into recovery mode

- Wipe cache

- Wipe data / factory reset

- Wipe Dalvick cache

Then flash this in ODIN - http://xdaforums.com/attachment.php?attachmentid=593112&d=1305133135

This will root your device.

I then updated to this - http://xdaforums.com/showthread.php?t=1074759

Cheers...:D

Added this set of instructions, it has pictures, remember there will be some differences... - http://xdaforums.com/attachment.php?attachmentid=596770&d=1305467639
[Galaxy Tab Q&A, Help & Troubleshooting] audiomanph:
Before you flash anything, kindly check if you have protected/locked/signed bootloaders. :)
[Galaxy Tab Q&A, Help & Troubleshooting] uhsarp:
Thanks for the quick replies guys. Do appreciate it. So regarding the bootloaders, what should I milk for?signed, secured??
[Galaxy Tab Q&A, Help & Troubleshooting] bongski55:
Just a comment about the procedure above.....unless you have CWM you will not see an option for dalvick cache in the default recovery,at least for mine the last entry was for cache-no advanced features like battery wipe and dalvick......
[Fascinate Themes and Apps] armyranger172:
Nevermind I figured it out
[Atrix 4G Q&A, Help & Troubleshooting] tdamocles:
When I choose the phone as mass storage I cannot see the contents of the internal SD. On my PC it lists the internal and external but does not show space available for the internal and I cannot go into it. If I use the file explorer in android(in the phone) I can see everything. How do I fix it?
[Atrix 4G Q&A, Help & Troubleshooting] MdX MaxX:
Try switching the mounting setting from Mass Storage to None and back. It worked for me, at least.
[Atrix 4G Q&A, Help & Troubleshooting] tdamocles:
I also noticed that some of the apps that were there also disappeared. After a reboot they all returned. Weird.....
[HTC EVO 3D] neoplise05:
Ok,

so i had an idea and not being that technically minded i thought id post it as a question instead of a statement...

Why wouldn't we be able to use the 3D's dual cameras just like the Kinect uses its?

Perhaps we could port software from one to the other...
[HTC EVO 3D] nate420:
Maybe on a 3d Windows phone.. but who knows...

sent from anything but an iPhone
[HTC EVO 3D] vegaobscura:
That's not how it works.

The cameras are used for the 3D depth, sure, but the Kinect also uses an IR sensor to shoot tiny dots of IR light, covering the room. Your movements to block this light are also recorded by the Kinect and used in translating your motion on screen.

I'm sure there will be some cool uses for a 3D camera--but it won't ever be as easy as "porting straight over" or anything like that.
[HTC EVO 3D] bubby323:
He is right, the technology you are talking about just isn't fully inside the Evo 3D like it is in the Kinect sensor, although I do have a few ideas on what to do with the added 3D capabilities as a developer myself. Nice job, thinking outside the box OP.