Hi!
I build my own power supply with 5V and 3A for my car. It works but it seems that the SGT loads not more than 500mA (USB standard). Seems that the standard power supply has a special pinout for the 4 usb pins.
I already found something that shorten D+ and D- should signalize a PSU but this is not working for me. Still 500mA max.
Does anybody know how to simulate a Galaxy Tab power supply over the USB pins?
You need to put a couple resistors in there too, then it works properly, I dont have a link right now but its easy to find via search.
I have done it and it works, but I did have to put in the resistors, some people dont seem to need to for some reason.
If you go to dealextreme .com and search for galaxy tab charging you'll find several variantsof charging cables and adapters that will do what you want. if you dont want to pay $3 for one thats already done, one of the usb adapters has some user photos showing the inside of the adapter which should give you ideas.
I am thinking of getting this tab to replace my acer a510.
Just wondering i think i read you can only charge using acer special cable??
Does this tablet have a usb/micro usb that can trickle charge while screen is off/asleep
example my a510 can trickle charge slowly if i hook up a usb to it, but only when the screen is off.
Acer use their own special usb plug to charge normally.
I want to use this for long traveling etc and only want to use a micro or usb from the car to get some juice into it.
I don't know. On the TF700 it was possible but on the TF701 I don't know but also didn't try it.
But I think when connecting the charging cable only to the tablet it will charge with any 5V usb charger but just very slow.
Page 17 of the manual.
http://dlcdnet.asus.com/pub/ASUS/EeePAD/TF701T/e8803_tf701t_em_v2_for_web_only.pdf
You need the special cable to charge, but you can use it to trickle charge from a PC or (presumably) a car USB charger with the screen off. Fast charging requires using the special cable with the Asus mains adapter.
pelago said:
Fast charging requires using the special cable with the Asus mains adapter.
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That is because the AC plug of the TF701 charges either with 15V/1,2Amps or 5V/2Amps, while a normal USB 2.0 hub is limited to 0,5Amps (USB 3.0 to 0,8Amps). If you have a vehicle charger with USB slot the charging speed depends on the max. current it can supply .
And also: there is no micro usb slot on the tablet or the dock.
btw: What Acer did really sucks,because they just switched + with Data+ and GND with DATA-GND from the USB pinning, so you _need_ the original Acer charging cable. (My brother has the A511,where i already repaired the cable once due to lead fracture)
Lamensis said:
That is because the AC plug of the TF701 charges either with 15V/1,2Amps or 5V/2Amps, while a normal USB 2.0 hub is limited to 0,5Amps (USB 3.0 to 0,8Amps). If you have a vehicle charger with USB slot the charging speed depends on the max. current it can supply .
And also: there is no micro usb slot on the tablet or the dock.
btw: What Acer did really sucks,because they just switched + with Data+ and GND with DATA-GND from the USB pinning, so you _need_ the original Acer charging cable. (My brother has the A511,where i already repaired the cable once due to lead fracture)
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Click to collapse
thanks everyone.
does anyone know whay the 64gb seems unavailable in japan? is this the same in other countries?
malos1984 said:
thanks everyone.
does anyone know whay the 64gb seems unavailable in japan? is this the same in other countries?
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Dont know why, but on amazon.de and amazon.com there is also no 64GB Version available.
Lamensis said:
Dont know why, but on amazon.de and amazon.com there is also no 64GB Version available.
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In Holland it is not even in their program.
This thing is pretty new, but has anyone been able to make it work with USB OTG ethernet adapters and hubs? Whenever I try the ones I have I end up on the error screen where it tells you to plug it into the wall instead of a TV USB port. I realize the ethernet adapter is available for pre-order, but that's $20 I would rather not spend when I have a few USB ethernet adapters laying around. Besides, it won't have USB ports.
The reviews I have seen say you need a high-wattage adapter. The packaged one is not strong enough to use through a hub.
Note10.1Dude said:
The reviews I have seen say you need a high-wattage adapter. The packaged one is not strong enough to use through a hub.
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Click to collapse
I saw those and it doesn't make much sense to me. This has to be an artificial limitation by Google to force people to use a wall wart instead of a TV USB port to avoid customer service headaches. I highly doubt this thing needs that much power to operate. I tried an old OnePlus Dash Charger (5V 4A output) with a simple powered OTG dongle and still got nothing.
Cheesethief said:
I saw those and it doesn't make much sense to me. This has to be an artificial limitation by Google to force people to use a wall wart instead of a TV USB port to avoid customer service headaches. I highly doubt this thing needs that much power to operate. I tried an old OnePlus Dash Charger (5V 4A output) with a simple powered OTG dongle and still got nothing.
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Click to collapse
Its looking for a power supply capable of delivering 1.5A of current.
The CPU in the thing is a QUAD-core Cortex-A55. Specifically, Amlogic S905X3. That's a pretty substantial CPU, so I don't think that 1.5A is that much of overkill. If you look at other tv boxes with the same CPU, you'll also see that they typically include 2A power supplies. In order to ensure that the power supply is capable of this, they are enforcing USB-PD profile 1 compliance.
Now USB-PD requires digital communication between the device and the power supply. If your "OnePlus Dash Charger" is not compliant with USB-PD, or if your "simple powered OTG dongle" blocks the communications, then the TV dongle will assume that you have it plugged into a standard 500 mA power adapter and complain to you about it being insufficient.
Oh, and the SoC itself has a TDP of 5W (1A at 5V). Add a few more parts like RAM and UFS and you can easily draw more than that, plus, you always want your power supply to have some room to spare -- not run it at its limits. That clearly puts you into 1.5A *MINIMUM* territory.
https://gadgetversus.com/processor/amlogic-s905x3-specs/
---------- Post added at 02:23 PM ---------- Previous post was at 02:09 PM ----------
Note10.1Dude said:
The reviews I have seen say you need a high-wattage adapter. The packaged one is not strong enough to use through a hub.
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Click to collapse
In order to prevent yourself from sounding like a doofus, a "watt" is a unit of POWER. So when you are talking about the adapter, use the words "high-POWER". "wattage" is very awkward.
96carboard said:
Its looking for a power supply capable of delivering 1.5A of current.
The CPU in the thing is a QUAD-core Cortex-A55. Specifically, Amlogic S905X3. That's a pretty substantial CPU, so I don't think that 1.5A is that much of overkill. If you look at other tv boxes with the same CPU, you'll also see that they typically include 2A power supplies. In order to ensure that the power supply is capable of this, they are enforcing USB-PD profile 1 compliance.
Now USB-PD requires digital communication between the device and the power supply. If your "OnePlus Dash Charger" is not compliant with USB-PD, or if your "simple powered OTG dongle" blocks the communications, then the TV dongle will assume that you have it plugged into a standard 500 mA power adapter and complain to you about it being insufficient.
Oh, and the SoC itself has a TDP of 5W (1A at 5V). Add a few more parts like RAM and UFS and you can easily draw more than that, plus, you always want your power supply to have some room to spare -- not run it at its limits. That clearly puts you into 1.5A *MINIMUM* territory.
https://gadgetversus.com/processor/amlogic-s905x3-specs/
---------- Post added at 02:23 PM ---------- Previous post was at 02:09 PM ----------
In order to prevent yourself from sounding like a doofus, a "watt" is a unit of POWER. So when you are talking about the adapter, use the words "high-POWER". "wattage" is very awkward.
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Click to collapse
All well and good maybe, but PD Profile 1 basically states that the wall wart provided is not up to spec.
BUT, that's actually a good thing because this is not a PD device, period. I can prove that very simply now. I am using a 5v 3a barrel jack wall wart to power it via a hub.
Specifically this hub: https://www.amazon.com/gp/product/B07QN3YYXM/
And specifically this powersupply:
https://pine64.com/product/rock64-pinebook-pro-pine-h64-5v-3a-switching-power-supply/?v=0446c16e2e66
Unfortunately, I cannot seem to get it to pass data through.
Edit: I did buy the hub to test, but the Rock64 powersupply is one I've had for a few years because of my sbc hobby.
EDIT2: Further testing shows that using the included barrel jack to usb cable (that comes with the above hub) with the Google provided psu works just fine too. So no need to buy the barrell jack wall wart above. Still no data passthrough though. The hub works just fine on Windows.
From my understanding, it is not USB PD compliant, but it does do some sort of testing of the connected power adapter to make sure it can output enough power. My guess is that some adapters get in the way of the full output of the connected wall wart. Which doesn't surprise me.
Hi, I've just received my new Cromecast with Google TV this.
Already I've managed to connect with this : https://www.amazon.de/-/nl/gp/product/B084G23KL5/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Power I get from my LG OLED TV USB port via a simple USB-A to USB-C cable.
Routing: LG OLED USB port --> USB Hub --> Chromecast (connected via PD output of hub).
I am using a hub too. This one specifically, which has ethernet built in:
https://www.amazon.com/dp/B07FX2LW35
It works fine, and it's powered by a 6 port USB-A charging station (otherwise I'd have too many charging bricks in one spot):
https://www.amazon.com/dp/B00Q6DZBIQ
I haven't used the ethernet but I have other accessories connected, including a 400gb micro sd adopted as native storage. The more accessories you have connected to the hub, the more power you're going to want to have access to (ie the TV's USB port might not supply enough power).
Your guys' options are spendy. I got it done with this:
https://www.amazon.com/gp/product/B08C5FWQND/
You can plug any old hub into it you have laying around and it'll (probably) work.
I bought this one:
https://www.amazon.com/gp/product/B07Z7H3GJK/
It works fine with the google-supplied power brick plugged into the hub. Ethernet works as well, 1Gb (I think Google's adapter is only 100Mb) However, the activity light is Neuralyzer white. Also have seen reports that if you leave the hub powered and connected to your network without the chromecast, it will cause problems. Otherwise well built.
I bought this one $12.99
https://smile.amazon.com/dp/B01COH17PS/
There was a comment saying it works, arrives tomorrow.. I'll update post if it really works.
Update
It works, just not with the power adapter that comes with the Chromecast with Google TV. I had to use a different one.
This one also works with ethernet and sd card (and the default power supply):
https://www.amazon.de/gp/product/B08BNQLRTG/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
robojerk said:
I bought this one $12.99
https://smile.amazon.com/dp/B01COH17PS/
There was a comment saying it works, arrives tomorrow.. I'll update post if it really works.
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Click to collapse
Mine arrives tomorrow as well... Any update? Did you need to use a different power supply? I am guessing it may depend on what you have plugged in. I am planning on just using a single flash drive for expanded app storage. I already have a networked drive for media.
jhedfors said:
Mine arrives tomorrow as well... Any update? Did you need to use a different power supply? I am guessing it may depend on what you have plugged in. I am planning on just using a single flash drive for expanded app storage. I already have a networked drive for media.
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It works but the power adapter that came with the new Chromecast with Google TV didn't work. Once I swapped it out with a more powerful one we're all good.
96carboard said:
Its looking for a power supply capable of delivering 1.5A of current.
The CPU in the thing is a QUAD-core Cortex-A55. Specifically, Amlogic S905X3. That's a pretty substantial CPU, so I don't think that 1.5A is that much of overkill. If you look at other tv boxes with the same CPU, you'll also see that they typically include 2A power supplies. In order to ensure that the power supply is capable of this, they are enforcing USB-PD profile 1 compliance.
Now USB-PD requires digital communication between the device and the power supply. If your "OnePlus Dash Charger" is not compliant with USB-PD, or if your "simple powered OTG dongle" blocks the communications, then the TV dongle will assume that you have it plugged into a standard 500 mA power adapter and complain to you about it being insufficient.
Oh, and the SoC itself has a TDP of 5W (1A at 5V). Add a few more parts like RAM and UFS and you can easily draw more than that, plus, you always want your power supply to have some room to spare -- not run it at its limits. That clearly puts you into 1.5A *MINIMUM* territory.
.
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Click to collapse
Hey there got got myself a usb hub for new chromecast too.
this hub
So far it works, but not the card readers.. Have to put the micro sd into an usb cardreader an plug it in the usb port of the hub to get the chromecast recognise the storage... Sucks yes
When booting i get this screen (dont know why upsidedown)
It will boot and behave normal, as long i dont attach any usb device.
It will also connect my microsoft bluetooth keyboard, which is pretty handy when you have to type something.
So i want to get an power supply that can provide enough power...
I dont know if its possible to overpower the chromecast and overheat, but i guess it is.
So do you think this
power supply
Would do the job?
Cheers
SchWeinSAuG said:
Hey there got got myself a usb hub for new chromecast too.
this hub
So far it works, but not the card readers.. Have to put the micro sd into an usb cardreader an plug it in the usb port of the hub to get the chromecast recognise the storage... Sucks yes
When booting i get this screen (dont know why upsidedown)
It will boot and behave normal, as long i dont attach any usb device.
It will also connect my microsoft bluetooth keyboard, which is pretty handy when you have to type something.
So i want to get an power supply that can provide enough power...
I dont know if its possible to overpower the chromecast and overheat, but i guess it is.
So do you think this
power supply
Would do the job?
Cheers
Click to expand...
Click to collapse
Won't hurt it in any way, but seriously overkill. 60 watts is enough to run a laptop.
joooker16 said:
Hi, I've just received my new Cromecast with Google TV this.
Already I've managed to connect with this : https://www.amazon.de/-/nl/gp/product/B084G23KL5/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Power I get from my LG OLED TV USB port via a simple USB-A to USB-C cable.
Routing: LG OLED USB port --> USB Hub --> Chromecast (connected via PD output of hub).
Click to expand...
Click to collapse
Can you tell me if UNEEDE USB C Hub 8 in 1 works with default Chromecast power supply? Thanks
el_easy said:
Can you tell me if UNEEDE USB C Hub 8 in 1 works with default Chromecast power supply? Thanks
Click to expand...
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Yes. As I understand, if it happens to work, you could risk damaging your devices.
jhedfors said:
Yes. As I understand, if it happens to work, you could risk damaging your devices.
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Click to collapse
I asked ,because i ordered an ABLEWE USB C Hub 8 in 1 Typ C Hub and did not work : https://www.amazon.de/-/en/dp/B07YZ4THMK/ref=pd_sbs_147_10?_encoding=UTF8&pd_rd_i=B07YZ4THMK&pd_rd_r=e2bc156d-56aa-4606-8dab-cdf0b3432474&pd_rd_w=3gzsc&pd_rd_wg=yDZuO&pf_rd_p=17269923-e95e-42b2-b8e1-f208b58f5815&pf_rd_r=87P69MVAPFG0JQEM0RN5&psc=1&refRID=87P69MVAPFG0JQEM0RN5
even with different power supply, thats why for my second try, Im very careful what to order.. if anyone can help to choose a proper USB C Hub that works with default Chromecast power supply from Amazon Germany , i will appreciated..Thanks
el_easy said:
I asked ,because i ordered an ABLEWE USB C Hub 8 in 1 Typ C Hub and did not work : https://www.amazon.de/-/en/dp/B07YZ...FG0JQEM0RN5&psc=1&refRID=87P69MVAPFG0JQEM0RN5
even with different power supply, thats why for my second try, Im very careful what to order.. if anyone can help to choose a proper USB C Hub that works with default Chromecast power supply from Amazon Germany , i will appreciated..Thanks
Click to expand...
Click to collapse
It is not recommended to use the Chromecast power adapter with a USB hub, as it does not provide enough power.
Find a more powerful adapter.
This is the hub that I am using in the US:
https://www.amazon.com/dp/B01COJ0MDY?ref=ppx_pop_mob_ap_share
jhedfors said:
Yes. As I understand, if it happens to work, you could risk damaging your devices.
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Click to collapse
You won't damage your device. Don't spread this kind of nonsense.
---------- Post added at 04:35 PM ---------- Previous post was at 04:30 PM ----------
el_easy said:
I asked ,because i ordered an ABLEWE USB C Hub 8 in 1 Typ C Hub and did not work even with different power supply, thats why for my second try, Im very careful what to order.. if anyone can help to choose a proper USB C Hub that works with default Chromecast power supply from Amazon Germany , i will appreciated..Thanks
Click to expand...
Click to collapse
That should work. What are the details on the second power adapter you tried? The 1.5A adapter these CC's are shipped with are pretty marginal for the power demands. You probably want something that can feed 3A or more at 5V. And remember that Chinese labels are often lies, so even if it says 3A, it could be 0.5A.
First it must be USB type c to USB A. 3.0
What USB standard nobody seems to know. For sure but most tell me its a USB 3.0 At the A end.
And USB Type C at the other end.
Next we need to know what is required in the cable to support Dex.
Next we need to know what is required to support Samsung Fast Charge standard. I hear its not the same as Quick Charge.
Is there any cable out there that does all these things.
I know the cable that comes with the phone does not do this.
i.e. I fails in the USB transfer speed dept.
In short.
Dex compatible,
Fast Charge compatible. As per this link we only need Fast Charge 2.0
But I wonder why does Samsung Claim to use its own standard. i.e. what is the diffirence between the Samsung standard and QC standard.
https://www.qualcomm.com/media/documents/files/quick-charge-device-list.pdf
USB 3.0 Standard compatible for high speed data transfer.
(They say if the USB A port is blue and has more than 4 pads it will work).
Ps: So far I have figured that my wifes One Plus 6 cable does all these jobs.
Answering my own question.
Got to amazon.
Search using this text usb type c to usb a 3.1
I got an amazon Basic from the search the USB A port is blue in color an indication that it is 3.0 It does everything Dex, fast speed transfer and fast charge.
Glad that you managed to get your cable. But for future reference any standard USB A 3.0 - Type - C charging cable will be good. However beware of multi-plug to USB A 3.0 cables as they don't have the best charging speeds, unless you have a high wattage power supply.
I'm using a nice quality INIU cable, has nice quality braided cover, a led for dark car charging, to see cable.