Odroid Go Advance [NEW?] Revision
- Etx
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Odroid Go Advance [NEW?] Revision
Greetings.
Looking at the evolution of OGA, i think it'll be a good idea to create a thread with smth. like roadmap with list of articles that may be improved or changed with minimal steps needed to the current architecture. So, we're not going to list here anything like "replace a CPU with Snapdragon 865" or "add a 7-inch screen" etc. Just a minor changes like OGA v1.1 have as a evolution from v1.0 after collecting feedbacks from customers.
1. It's time to add a HDMI port to OGA. It can be done by changing a CPU to PX30 instead of RK3326. It is identical CPU except it have two VOP's. Adding a RK618 MUX IC ($1 cost ) to the circuitry will result in cheap and easy HDMI output implementation.
2. Since we might have a HDMI, it is also a good idea to add bluetooth module, not just wi-fi as v1.1 have, to be able to add external controllers through USB and BT for multiplaying.
3. Something really SHOULD be done about all that housing and LCD stuff. Currently we have a massively perforated housing with a weird combination of non-dustproof LCD mounting method. Plus many cutomers keep cracking their LCD's while mounting them. So i have a few sub-articles about that:
a) Plastic screen protector is a weird choice for a portable device in a year 2020. Change it to a glass-made or make a one-piece LCD+glass laminated dustproof module, with adhesive tape along the edge of the glass. So the only step customers need to do is unstick a liner and put whole assembly in frame. Without all that twisting, bending, cutting etc. stuff. As a bonus we will get better view angles and image contrast.
b) Remove all those unnecessary holes as well as expansion slots. Seriously, who need those holes for UART port as well as 10-pin port at the top in a GAMING device? I see 0 projects that actually needs it, and i really don't know why i should accept those nano L2/R2 buttons with yet another hole between R2 and USB port. Okay, there always will be some users that will want to add a humidity sensor and play with it for 1-2 days, posting their success story to the forums - just leave a pre-embossed parts of the case that could be easily removed for wires in case they will be needed. Leave those test pads with standart layout for easy connector soldering and let them do their game. Change UART and 10-pin port connectors to a smth like FPC/FFC connector INSIDE the housing, and let them wire it throug the case if they'll need it.
c) I know that nobody likes a mention of "RK..." device here, but they really did a good job with a housing and L/R/L2/R2 buttons... Well, i have to admit ABXY and D-pad are nice too. I personally like their recessed analog stick a lot, since i have RG350M and found them very handy, easy to put in your pocket because of such recessed design. Instead of just screaming they stole everything from you (which, of course, is pure truth) - take from them what turned out well - housing and buttons.
4. "Demand was much higher than expected", yet again. Can anybody explain me the reasons of why a current production scheme do exist? I'm talking about that China -> Korea moment, where odroid orders battery, pcb and lcd? in Korea, while waiting for housing, screws, buttons, membranes, speaker, joystick and... everything else from China. After combining all parts together, it is being shipped from Korea to USA, Europe etc. I see no reasons for that. Time losses, logistics losses... Guess it was designed so to prevent replicas from China? Well, looks like that didn't work. Maybe it's time to optimize those production lines and start shipping those kits from China entirely ?
Looking at the evolution of OGA, i think it'll be a good idea to create a thread with smth. like roadmap with list of articles that may be improved or changed with minimal steps needed to the current architecture. So, we're not going to list here anything like "replace a CPU with Snapdragon 865" or "add a 7-inch screen" etc. Just a minor changes like OGA v1.1 have as a evolution from v1.0 after collecting feedbacks from customers.
1. It's time to add a HDMI port to OGA. It can be done by changing a CPU to PX30 instead of RK3326. It is identical CPU except it have two VOP's. Adding a RK618 MUX IC ($1 cost ) to the circuitry will result in cheap and easy HDMI output implementation.
2. Since we might have a HDMI, it is also a good idea to add bluetooth module, not just wi-fi as v1.1 have, to be able to add external controllers through USB and BT for multiplaying.
3. Something really SHOULD be done about all that housing and LCD stuff. Currently we have a massively perforated housing with a weird combination of non-dustproof LCD mounting method. Plus many cutomers keep cracking their LCD's while mounting them. So i have a few sub-articles about that:
a) Plastic screen protector is a weird choice for a portable device in a year 2020. Change it to a glass-made or make a one-piece LCD+glass laminated dustproof module, with adhesive tape along the edge of the glass. So the only step customers need to do is unstick a liner and put whole assembly in frame. Without all that twisting, bending, cutting etc. stuff. As a bonus we will get better view angles and image contrast.
b) Remove all those unnecessary holes as well as expansion slots. Seriously, who need those holes for UART port as well as 10-pin port at the top in a GAMING device? I see 0 projects that actually needs it, and i really don't know why i should accept those nano L2/R2 buttons with yet another hole between R2 and USB port. Okay, there always will be some users that will want to add a humidity sensor and play with it for 1-2 days, posting their success story to the forums - just leave a pre-embossed parts of the case that could be easily removed for wires in case they will be needed. Leave those test pads with standart layout for easy connector soldering and let them do their game. Change UART and 10-pin port connectors to a smth like FPC/FFC connector INSIDE the housing, and let them wire it throug the case if they'll need it.
c) I know that nobody likes a mention of "RK..." device here, but they really did a good job with a housing and L/R/L2/R2 buttons... Well, i have to admit ABXY and D-pad are nice too. I personally like their recessed analog stick a lot, since i have RG350M and found them very handy, easy to put in your pocket because of such recessed design. Instead of just screaming they stole everything from you (which, of course, is pure truth) - take from them what turned out well - housing and buttons.
4. "Demand was much higher than expected", yet again. Can anybody explain me the reasons of why a current production scheme do exist? I'm talking about that China -> Korea moment, where odroid orders battery, pcb and lcd? in Korea, while waiting for housing, screws, buttons, membranes, speaker, joystick and... everything else from China. After combining all parts together, it is being shipped from Korea to USA, Europe etc. I see no reasons for that. Time losses, logistics losses... Guess it was designed so to prevent replicas from China? Well, looks like that didn't work. Maybe it's time to optimize those production lines and start shipping those kits from China entirely ?
- npaladin2000
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Re: Odroid Go Advance [NEW?] Revision
Those holes aren't unnecessary. As you pointed out, one of them is for the UART port, which developers need for access and debugging (to get a serial console session while trying to get the screen working for example). The rest are for promoting airflow for cooling. You mentioned a certain other device, which I won't, except to say that their elimination of airflow holes has actually produced situations where it will overheat.
The 10 pin expansion port, I'm not sure I see the point of. It's traditional on the OdroidGo devices so people can create expansion devices for it, but the bandwidth is fairly low on it, so I'm not sure what it might be good for. I know someone has been working on an L2/R2 add-on board that connects to it, but that's only valid for the v1 devices. There isn't enough bandwidth in the connector for it to act as a TV-Out, for example, not to mention there's also the USB-A interface port present. I guess we'll have to see on that one.
- Etx
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Re: Odroid Go Advance [NEW?] Revision
Yeah, i know that UART is made for devs. But we currently have, let's round up, 1% of customers that are dev's and really using this port... and 99% of gaming customers asking what is this hole for and why it isn't covered. All in all, since all the devs have to solder a connector there, thus device need some extra work with UART, isn't it a good idea to make some easily-removable part of the case for devs and leave a solid housing for 99% of other customers? You're dev, you need this port - remove a fragment, solder those 4 UART-USB pins and continue your development.npaladin2000 wrote: ↑Mon Jun 29, 2020 10:42 pmThose holes aren't unnecessary. As you pointed out, one of them is for the UART...
Yet one word about all this ventilation through theese holes. I saw 2+ hours of continuous gameplay on RK* device at YouTube and found none overheating problems, thus i really don't believe it does exist on both consoles. Also you have to admit that tiny RAM copper heatsink on top of the CPU will dispass a heat significantly better than all those holes in the housing. Thus i vote on solid and handy case plus a note in manual that you can add a tiny copper heatsink in case you're playing at a direct sunlight and 40C outside - you might expect some overheating problems and it'll be your solution, rather than a perforated pocket sand collector.
Last edited by Etx on Mon Jun 29, 2020 11:28 pm, edited 4 times in total.
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Re: Odroid Go Advance [NEW?] Revision
There are additional design considerations. Using HDMI also means an increase in memory usage. An increase in memory usage also means an increase in memory bandwidth. More pixel also puts additional pressure on the Mali GPU.
I would like to see BT added. However, one constraint is that BT uses the same 2.4Ghz spectrum that wifi does.
As a developer, all my devices require access to the UART port. This is critical since there is no other way to debug the device (no Ethernet). All ODROID boards target developers.
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- Etx
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Re: Odroid Go Advance [NEW?] Revision
I wonder, how all those Pi-2* based consoles with 512Mb DDR1; RG-350 with it's relic MIPS CPU and 512Mb DDR2; Retroid Pocket with 512Mb DDR2 etc. are able to output HDMI signal, while OGA with Cortex-A35 and 1024Mb DDR3 is not?crashoverride wrote: ↑Mon Jun 29, 2020 11:18 pmThere are additional design considerations. Using HDMI also means an increase in memory usage. An increase in memory usage also means an increase in memory bandwidth. More pixel also puts additional pressure on the Mali GPU.
Your smartphone having any issues using Wi-Fi and BT at the same time? I don't think so...crashoverride wrote: ↑Mon Jun 29, 2020 11:18 pmI would like to see BT added. However, one constraint is that BT uses the same 2.4Ghz spectrum that wifi does.
Weeeeell, i don't think so as well. It was a problem with a 1st batch, but not with the second one. RK* was released at the same time when we had a second batch in stock.
That doesn't explain the necessity of China -> Korea -> USA/Europe logistics as well.
Last edited by Etx on Tue Jun 30, 2020 9:35 pm, edited 1 time in total.
- ThatOneSeong
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Re: Odroid Go Advance [NEW?] Revision
The Pi-based consoles are barely in situations where they use the GPU; and when they do, it's an extremely low resolution. (Also, wrong specs, as Pi-3's and onward are 1GB LPDDR3 at minimum) Same with the Retroid, and it doesn't look very pretty blowing up 480p onto an HDTV.
On Dingux, HDMI is extremely buggy and barely functional on half-baked firmware. It's also only 240p/480p output depending on model. Source; am from the Dingux community.
If you're fine with sub-320p output on TVs, then sure - but I'm assuming you were expecting 1080p output, which really wouldn't be practical for the reasons Crash outlined already.
Your smartphone also runs off a sub-$5 chip which throttles at ~5mb/s? Also, your phone costs, at minimum, twice the cost of the OGA in parts (and no, we're not talking used parts - the OGA is a new device, so we're using new, on-the-market-now prices and not outdated tech being liquidated); not an apt comparison...Your smartphone having any issues using Wi-Fi and BT at the same time? I don't think so...
Tbh, a lot of the suggestions being brought up would either require a significant reworking of the hardware (which definitely wouldn't be in the same scope from the OGA to the OGA BE, as you claimed at the top), or significantly raise the price. I'd love to see some changes like bigger secondary shoulders (even though the ones we have rn are just fine) and moving the IO a bit closer to one-another, but you have to realize that most, if not all these suggested changes (with the exception of BT on-chip, which probably won't happen for power and/or price reasons) are much better suited to a sequel device which can accomodate such a design overhaul.
Also keep in mind that the device is made for the SBC and DIY community just as much as it's tailored to the gaming market; you can't just exclusively single out a chunk of the userbase like that, and what you think the general audience is doesn't really apply. It comes off as pretty selfish, ngl. :/
P.S. Voldemort's Device (as it shall not be named) has been reported to overheat in other circles - certainly significantly more than any such reports from the Odroid community. You can blame that on the chip being nearly-directly pinned against the screen.
Just your average Seong here. Nothing more to see.
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- Etx
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Re: Odroid Go Advance [NEW?] Revision
To be true, i don't understand, what are you talking about here at all. Go on Youtube and look at those Pi boards playing games that they are able to handle perfectly on RetroPie builds through HDMI. Nobody is talking about an entire available ROM collection to be perfectly smooth running on the OGA. Let it handle those that could be playable! All NES roms f.e. According to your explanation HDMI is useless unless it can play Doom Eternal at 4k@60fps... What you'll say about Retroid Pocket - it have HDMI out and it is working good. Any comments to it's developers with why should they disable HDMI?ThatOneSeong wrote: ↑Tue Jun 30, 2020 3:05 amThe Pi-based consoles are barely in situations where they use the GPU...
Yeah, my tablet runs off sub-$5 chip RTL8723AS, BT+Wi-Fi combo module, and it have no throttle problems whatsoever. If a currently used by OGA:BE module having those issues, that means poor module was chosen or bad layout made, interferencing with data lanes. Thus a better module should be chosen or rewired according to all manufacturer datasheet recommendations. Is there any obstacles to not to use RTL8822CS 802.11ac Wi-Fi/BT module in the next revision? I found them working well in many RK-based TV boxes.ThatOneSeong wrote: ↑Tue Jun 30, 2020 3:05 amYour smartphone also runs off a sub-$5 chip which throttles at ~5mb/s?
Well, if we're talking about HDMI output - i agree, some comprehensive layout changing should be done, but everything else is a minor changes.ThatOneSeong wrote: ↑Tue Jun 30, 2020 3:05 amTbh, a lot of the suggestions being brought up would either require a significant reworking of the hardware...
What are we talking here about yet again? Nobody in the DIY community wants a working HDMI port? Nobody wants a better quality housing and bigger buttons? Nobody wants dust-free LCD module without THESE backlight spots? This forum is full of threads with expansion modules that uses 10-pin port? Have you ever read subreddits with buyers "success" stories full of cracking screens, desoldered buttons etc.?
It's just a complete lie. They've stolen PCB layout almost completely, thus CPU is located at the same place as OGA have it - at the opposite side of the PCB and is not being pinned against the screen. The only difference is on RK* device CPU is covered by the battery, unlike the OGA, where the battery is located at the right part.ThatOneSeong wrote: ↑Tue Jun 30, 2020 3:05 amYou can blame that on the chip being nearly-directly pinned against the screen.
Last edited by Etx on Wed Jul 01, 2020 5:39 pm, edited 2 times in total.
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Re: Odroid Go Advance [NEW?] Revision
HDMI connectors are not designed to provide the tolerances required in a portable gaming device. During game play, a handheld gaming device experiences a lot of motion and forces. This fatigues the connector and will eventually result in failure of the part. These connectors are designed to be used in a "docked" scenario. A more suitable alternative would be to "cast" the video/audio wirelessly.
Regulatory certification costs and antenna design.
This literally made me laugh out loud. Thanks.
I should also state that GO-Advance BE is proof that HardKernel listens to community feedback.
- Etx
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Re: Odroid Go Advance [NEW?] Revision
That's why a micro HDMI port was created. In case of "a lot of motion and forces" it will simply fall out and nothing will be breaked.crashoverride wrote: ↑Tue Jun 30, 2020 12:15 pmHDMI connectors are not designed to provide the tolerances required in a portable gaming device...
All that wireless/casting will need a massive amount of work to be done to make it work well - not a variant at all. Besides, current wi-fi perfomance is very bad also, right?
I have a gcast 2nd gen and it have many issues sometimes with forcing it to work normally.
I know nothing about certification, but antennas are being made 100% based on Realtek datasheets, can be a part of the PCB or you can supply it easily as a foil sticker with U.FL connector, very cheap.
If all that certification costs so high that RTL8822CS 802.11AC/BT module is not an option for the future revision, perhaps a PCB could be pre-made to solder this module by the buyers itself? Something like it was done with SDIO port in rev.1.0. PCB will be shipped with a poor and cheap certified module, but there will be a layout beneath it to unsolder it and replace by 802.11AC device.
Why should we accept poor Wi-Fi and lack of BT because of the current module was cheap in certification?
On the one hand we're talking about OGA as a DIY device, for DIY community and skilled buyers. And on the other - it should be as simple as piece of wood and nothing should be done by the customers except nuts tightening. Let those 2 variants co-exist. Skilled owners may do some DIY work to gain 802.11AC perfomance, customers without appropriate skills will use a device in it's basic condition.
Last edited by Etx on Wed Jul 01, 2020 5:40 pm, edited 2 times in total.
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Re: Odroid Go Advance [NEW?] Revision
I've been hoping somehow we may see this in the future.crashoverride wrote: A more suitable alternative would be to "cast" the video/audio wirelessly.
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Re: Odroid Go Advance [NEW?] Revision
See, this is exactly the reason why the original goa didn't have wifi. You could add it via usb where you have control over its type/performance...Why should we accept poor Wi-Fi and lack of BT because of the current module was cheap in certification?
They went with a modest wifi chip because:
* price
* sdio was available with no extra cost
* for convenience to the end user, for rom transfers.
But it was not intended for high throuhput/low latency streaming or anything...
So they knew from the start they can't please everyone. Also, not sure how many users need wifi after copying/managing their roms...
- Etx
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Re: Odroid Go Advance [NEW?] Revision
Well, since the console is running Linux, that was a bad idea to choose a USB adapter as a network source. Just a few adapters are actually supported, there are almost no variants to choose from. And yet you can't easily inject the drivers to the distro to make your specific adapter to work.
I still don't think all that licensing cost a lot, since all the changes made on OGA:BE cost $5.
But if there is so many expenses with RTL8822CS 802.11AC/BT module, a premade soldering layout looks like a great idea. One specific Wi-Fi/BT module will be supported (as well as those current 3? USB adapters) and will fully covers all the needs. Based on it's datasheet, it utilizes UART interface for the bluetooth, which we also have onboard. A simple solder jumper or SMD switch will be needed to switch between debug UART output and BT functionality.
I still don't think all that licensing cost a lot, since all the changes made on OGA:BE cost $5.
But if there is so many expenses with RTL8822CS 802.11AC/BT module, a premade soldering layout looks like a great idea. One specific Wi-Fi/BT module will be supported (as well as those current 3? USB adapters) and will fully covers all the needs. Based on it's datasheet, it utilizes UART interface for the bluetooth, which we also have onboard. A simple solder jumper or SMD switch will be needed to switch between debug UART output and BT functionality.
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Re: Odroid Go Advance [NEW?] Revision
Since we will have 4 OGA competitors/clones in August (RG351/improved *K2020/PowKiddy RGB10/Z-Pocket Game Pro), i sincerelly welcome odroid here to reply anything about listed ideas to improve. If he is surely interested.
Because as for today i think that the only way to be the best amoung them is to evolve and become better and better. No variants to win this race with just "genuinity", especially with those huge delays between the batches.
Because as for today i think that the only way to be the best amoung them is to evolve and become better and better. No variants to win this race with just "genuinity", especially with those huge delays between the batches.
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Re: Odroid Go Advance [NEW?] Revision
I would like to see the following, although I'm sure some of these may not be doable with the rk3326:
1. eMMC or other separate drive for OS (8-16GB should be sufficient)
2. Screen that is landscape by default to mitigate the need for rga rotation, also from the spec sheet I read that the current screen is 20ms which I feel is far too high.
3. Better dpad, buttons
4. Faster wifi would be welcome, latency is fine on the current esp8089
5. USB-C with data + host/otg support (I've gotten mixed host/otg support to work but it's very finicky, I assume it's the dwc2 drivers again)
6. I'd be willing to pay a fairly steep premium for the above
1. eMMC or other separate drive for OS (8-16GB should be sufficient)
2. Screen that is landscape by default to mitigate the need for rga rotation, also from the spec sheet I read that the current screen is 20ms which I feel is far too high.
3. Better dpad, buttons
4. Faster wifi would be welcome, latency is fine on the current esp8089
5. USB-C with data + host/otg support (I've gotten mixed host/otg support to work but it's very finicky, I assume it's the dwc2 drivers again)
6. I'd be willing to pay a fairly steep premium for the above
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Re: Odroid Go Advance [NEW?] Revision
I think we need to rethink the way we do ROM transfers. Nobody plays 1,000+ ROMs in a sitting. I have been contemplating a system that allows ROMs to be kept on a network or USB device (flash, HDD, SDD) and installed "on demand" to the SD card. The ROMs are kept until space is exhausted, and then a "least recently/frequently" used algorithm would automatically remove "stale" titles while keeping game saves.
This is more of a linux issue than a hardware issue. This is evident by the fact that its not an issue with Android. Even with a landscape display, RGA would still be required for the "best in class" scaling seen on the GO-Advance.
We really need a 2.4/5Ghz capable WIFI solution. The 2.4Ghz spectrum is VERY "noisy" in my region. I also feel Bluetooth should be mandatory. I really want to expand the scope and use of it in the future.
USB-C is not at all common in my region. A micro USB-OTG port would be far more useful to me.
I believe the market has demonstrated that a higher priced device would be acceptable.
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Re: Odroid Go Advance [NEW?] Revision
What do you mean in your region? You live in the US don't you?
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Re: Odroid Go Advance [NEW?] Revision
In the context of this discussion, anything that I would plug into a GO-Advance has a USB-A or micro-USB connector. USB-C is not useful as an accessory connection for this category of device. I can only assume that is different in other places.
I didn't think this would be controversial. I purposely refrained from stating my idea as those previously listed were much better. Mine suggestion was ODROID Cologne! So everyone can have that "New SBC" smell all day long.

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Re: Odroid Go Advance [NEW?] Revision
I belive crashoverride prefers the term "The independent nation of Texas"You live in the US don't you?

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Re: Odroid Go Advance [NEW?] Revision
Just want to thank @Etx for his comments. While housing and ports is part of DIY and can be discussed (we can easily solder to pins and do holes in housing if needed), lack of HDMI, or any other video output is almost crime )
- Etx
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The fun fact is that Z-Pocket Game Pro "clone" is based on same CPU and have a HDMI output.
Guessing the CPU was not the reason of why OGA don't have a HDMI output all this time.
Guessing the CPU was not the reason of why OGA don't have a HDMI output all this time.
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Re: Odroid Go Advance [NEW?] Revision
Just because it can be done doesn't mean that 2.4GHz interference doesn't exist or occur.Etx wrote: ↑Mon Jun 29, 2020 11:44 pmYour smartphone having any issues using Wi-Fi and BT at the same time? I don't think so...crashoverride wrote: ↑Mon Jun 29, 2020 11:18 pmI would like to see BT added. However, one constraint is that BT uses the same 2.4Ghz spectrum that wifi does.
It has to be managed, and even with good design, 2.4GHz interference can be noticeable enough on many consumer devices to elicit complaints from non-technical users.
I'm not sure HardKernel has the time or inclination to struggle with antennae placement to have both 2.4GHz Wifi and Bluetooth in the next iteration of Odroid Go Advance.
It could take many more iterations of prototypes than they'd like to deal with.
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