This has been asked and there are than one (paid) solutions to this problem.
In this article, I'm going to introduce a totally free method.
I ain't going to go into the steps but if you know how to do streaming to YouTube/FB, you will be able to understand this method easily. If you don't know how to do streaming to a single platform, you won't probably ask this question, right?
To make everything simple, the whole concept is to do streaming on a stream. I guess some people might already know how it goes, if you still don't get it, please read on.
First of all, you will use OBS to stream to either YouTube or Facebook as usual, let say you will use OBS to stream to YouTube first.
Now, you've a YouTube stream and now you will on to have it on Facebook live as well. To do that, you use a separate computer to play that YouTube stream. And then on this computer, start another OBS, capture that YouTube stream with OBS and then stream it to Facebook, QED.
That's what I meant by streaming a stream.
Showing posts with label computing. Show all posts
Showing posts with label computing. Show all posts
Tuesday, April 28, 2020
Tuesday, October 30, 2018
尿袋的充電效能
近來發現尿袋充電有啲慢，起先係懷疑條充電線，但後來發現原來係個尿袋。我一直喜歡用 18650 尿袋，因為可以換電，去露營最方便，第二朝唔夠電可以換，甚至可以用原本俾營燈／頭燈用既 18650 嚟換，可以省去唔少重量。
今日慢既原因，應該係裡面既 18650 開始老化，慢到得返 0.4A 左右！
換電之後，即刻快返！
變成 0.76A，快近差不多一倍！既然係咁，我就順手測埋家裡其它尿袋：
呢個台電 (teclast) 新買返嚟時好堅，容量大，充電快，但原來佢已經拆舊了不少，得返 0.56A... 再跌就可以退役了！
另一個經常攞出去露營既尿袋，裡面既 18650 亦開始老化，得返 0.57A，還可以用多一段時間吧！
以下係我以前用嚟去露營既尿袋，有四粒 18650，應該更加老化，但佢輸出似乎都仲係相當唔錯喎：
有 0.69A，我諗係因為佢有四粒電夾埋！再睇一個可以放七粒電既尿袋，我只係放咗六粒超舊而且低質既 18650，結果真係唔錯喎：
竟然有 1.18A，最廢既電池，但卻係全場總冠軍！簡直係環保之星！以下係直駁 Orico 充電器既輸出：
呢個尿袋化廢物為神奇，仲充得快過插電制！最後係一隻黑馬，放響屋企無咩人願用，皆因佢樣貌普通，但原來卻係幾堅：
有 0.87A，日後我肯定會多啲用佢！
綜上以上既觀察，啲廢電池已經有歸宿，就係七電尿袋！出街雖然太重，但若果去得唔遠，其實都有賺又環保！
Friday, February 2, 2018
Dropbox installation error 2
I faced these twice, once on a new Windows 10 machine and another occasion on a fresh re-installation on a Windows 8.1 Pro machine.
A simple google search reveals nothing useful, for example, running the offline installer.
But then the no-brainer solution works flawlessly, i.e. do a Windows update.
QED.
A simple google search reveals nothing useful, for example, running the offline installer.
But then the no-brainer solution works flawlessly, i.e. do a Windows update.
QED.
Tuesday, January 16, 2018
grcpool and wallet update
I did some mining on grcpool, since I had been doing seti@home and similar stuff anyway.
Upon payout from grcpool, I found that my wallet was not updated at all.
And after much research, I am confident about what I did was probably correct and through the process, I understand the whole mechanism more.
Then after around two days of time, I found my wallet was updated.
Just to keep this note to everyone, and please be reminded that it could take one or two days, or even a bit longer.
Keywords: grcpool, wallet not updated, payout not received, wallet failed to update, grc, grc mining
Upon payout from grcpool, I found that my wallet was not updated at all.
And after much research, I am confident about what I did was probably correct and through the process, I understand the whole mechanism more.
Then after around two days of time, I found my wallet was updated.
Just to keep this note to everyone, and please be reminded that it could take one or two days, or even a bit longer.
Keywords: grcpool, wallet not updated, payout not received, wallet failed to update, grc, grc mining
Friday, May 5, 2017
Replacing a broken screen for a tablet
It was dropped to the floor as my daughter said, less than 3 months new... The SD card slot was damaged and the card inside was bend and broken too.
Before the replacement.
The seller was nice enough to request for an image of the back of the tablet, so as to ensure everything works well.
Make sure that it could be turned on...
The disassembly is easy, much easier than replacing the screen of a mobile phone.
Pulled out the components... the connectors were quite big and so it's not difficult at all.
Q.E.D.
taobao is a great source, and to my surprise, such a big screen is actually quite cheap, cheaper than most mobile phone screen!
Before the replacement.
The seller was nice enough to request for an image of the back of the tablet, so as to ensure everything works well.
Make sure that it could be turned on...
The disassembly is easy, much easier than replacing the screen of a mobile phone.
Pulled out the components... the connectors were quite big and so it's not difficult at all.
Q.E.D.
Monday, December 5, 2016
Replacing the hard drive of Dell Inspiron 2020
It uses a 3.5" desktop HDD, the original one was a Seagate 512G. I'm going to replace it with a Seagate 1T.
The original plan was the following:
1. Clone the original hard drive
2. Disassembly the Inspiron
3. Replace the hard drive
But then the cloning process was not very successful. The way I did was to connect the new hard drive with a USB to SATA cable, and then clone from the internal hard driver. However, I soon realize that the sector size was different, and none of the software that I tried could do the clone. I believe even a "dd" won't work. I found that internal drive had 512 bytes sector size, while USB connect drive had 4K sector size and that is the source of the problem.
Finally, I backup the original drive and then install the new hard drive, followed by restore from the backup image. It works flawlessly, Windows 8 does not complain about the change of hardware. I've created a new partition with the added space and it works fine, too.
The original plan was the following:
1. Clone the original hard drive
2. Disassembly the Inspiron
3. Replace the hard drive
But then the cloning process was not very successful. The way I did was to connect the new hard drive with a USB to SATA cable, and then clone from the internal hard driver. However, I soon realize that the sector size was different, and none of the software that I tried could do the clone. I believe even a "dd" won't work. I found that internal drive had 512 bytes sector size, while USB connect drive had 4K sector size and that is the source of the problem.
Finally, I backup the original drive and then install the new hard drive, followed by restore from the backup image. It works flawlessly, Windows 8 does not complain about the change of hardware. I've created a new partition with the added space and it works fine, too.
Saturday, July 23, 2016
Replacing the fan of Asus Eee 1005HA
I guess not many people were interested in this thing, it's an aged net book running Windows XP. I had replaced its hard disk a few years ago, and also its keyboard, the battery pack was replaced, too.
In case you're still interested, here we go.
First of all, get a new fan from taobao at 15 RMB, it contains the heat sink for the CPU and chipset:
Taking away the keyboard is relatively easy, and you can see the fan now, but then it could not be replaced yet since the CPU and chipset is on the other side, unluckily.
So you have to remove this board from the case...
Take away and replace, done!
Finally, a video to tell you how to disassemble completely: youtube
First of all, get a new fan from taobao at 15 RMB, it contains the heat sink for the CPU and chipset:
Taking away the keyboard is relatively easy, and you can see the fan now, but then it could not be replaced yet since the CPU and chipset is on the other side, unluckily.
So you have to remove this board from the case...
You finally see the whole fan/heat sink assembly:
Take away and replace, done!
Finally, a video to tell you how to disassemble completely: youtube
Tuesday, May 10, 2016
Asus al31-1005 battery pack disassembly
It was not doing good after several years, and I've ordered replacement battery pack which will support my 1005HA for 5-8 hours. Today, I took the plunge to disassemble it to get the 18650 inside for other purpose.
At the very beginning, I actually wanted to do it cleanly, for example, to even replace the 18650 with some new batteries but then the case was too thin and fragile. Only three cells were inside.
They were from LG with 2200mmAh... not bad. Below is the circuit board for charging, etc.
I found a device which I suspected it to be a temperature sensor, to avoid overheating.
Most of the battery pack was indeed empty space.
At the very beginning, I actually wanted to do it cleanly, for example, to even replace the 18650 with some new batteries but then the case was too thin and fragile. Only three cells were inside.
They were from LG with 2200mmAh... not bad. Below is the circuit board for charging, etc.
I found a device which I suspected it to be a temperature sensor, to avoid overheating.
Most of the battery pack was indeed empty space.
Friday, May 29, 2015
Goodbye sina services
I had been using it for very long, I forget exactly how long, but it should be like 10 years or so. It features an all-in-one account, that means email, web hosting and photo album and I've been using them all. 101M was offered for free, and it was shared among these three services. Very generous when it was launched.
First up is the landing page, you could then select which service that you're going to use.
This is the email interface, I believe it is among the first web based email provider who would allow you to show the photographs attachment inline! Of course, it's a standard feature nowadays, but it was a kind of pioneer by then. They also got a spam filter which is again, innovative by then.
The web hosting interface, you have a full feature file manager. You could also edit your files directly, again, very nice even with today's standard.
Finally, a screen shot showing the sina based URL.
I'm going to miss this great service, but non-profitable stuff must be ended eventually.
First up is the landing page, you could then select which service that you're going to use.
This is the email interface, I believe it is among the first web based email provider who would allow you to show the photographs attachment inline! Of course, it's a standard feature nowadays, but it was a kind of pioneer by then. They also got a spam filter which is again, innovative by then.
The web hosting interface, you have a full feature file manager. You could also edit your files directly, again, very nice even with today's standard.
I'm going to miss this great service, but non-profitable stuff must be ended eventually.
Sunday, March 23, 2014
The "Samsung T118" Tablet
It's being marketed in taobao or some other online shops, the price is exceptionally low for a tablet with its advertising specifications. It's just too good to be true, and thus, it's not real indeed.
To highlight a few:
1. It's not really from Samsung
2. The LCD has low contrast which could be frustrating when compared with modern LCD. The viewing angle could be rather limited. The color depth and dynamic range is rather poor.
3. The CPU is not quad-core as advertised, it's dual core only.
4. The CPU is not as fast as advertised, good only for simple applications, could be a bit slow by modern standard.
Here is a snapshot of the benchmark result:
Having said that, it's a very good deal as long as you could live with the above. The bottom line is, you got more than what you actually paid for.
--
On 淘寶, 電子產品, 順豐, 香港
On the contrary of what you can see from the Internet, the above combination is possible provided that the seller declares at the custom properly. It just add complications which common vendors are not willing to spend the extra-effort.
即係話, 順豐可以發電子產品嚟香港, 只係個發件人要報關, 仲要去特定地點寄件
To highlight a few:
1. It's not really from Samsung
2. The LCD has low contrast which could be frustrating when compared with modern LCD. The viewing angle could be rather limited. The color depth and dynamic range is rather poor.
3. The CPU is not quad-core as advertised, it's dual core only.
4. The CPU is not as fast as advertised, good only for simple applications, could be a bit slow by modern standard.
Here is a snapshot of the benchmark result:
Having said that, it's a very good deal as long as you could live with the above. The bottom line is, you got more than what you actually paid for.
--
On 淘寶, 電子產品, 順豐, 香港
On the contrary of what you can see from the Internet, the above combination is possible provided that the seller declares at the custom properly. It just add complications which common vendors are not willing to spend the extra-effort.
即係話, 順豐可以發電子產品嚟香港, 只係個發件人要報關, 仲要去特定地點寄件
Wednesday, August 7, 2013
Zopo 958
My Samsung i8150 suffered a rather premature death after around 1 year of usage. Within that year, I bought four batteries for it. It is not exactly dead but it keeps on rebooting itself randomly, in the worse case, you just even cannot use it. Battery drains very quickly while self-rebooting.
While we have cases about electric shock with iphone, we have explosion with Samsung devices, and thus I took the plunge to buy a Chinese brand mobile phone. After some initial feedback from real users, I have decided to give Zopo a chance.
I love to play Ukulele and so the ability to see music scores would be a huge plus to me, so I aim myself at those big models at 5.7" IPS screen, and so 950, 950H and 958 were my targets. 950 was a bit old, 950H and 958 differs by only one or two hundreds, so I get the one with highest specifications. I won't repeat all the specifications here since they could be fetched from the web very easily, here I give some general impression after one week of very active usage.
Two original batteries were included in the package. The manufacturer rated capacity is not very meaningful, and I was a pretty active user, and the battery can last for a whole day given I turned off 3G data when I sleep. For the rest of time, either Wifi or 3G were used actively. Charging the battery is like 4-5 hours from my impression, either the charger and the battery is not hot during the process. Given its huge screen, it's very good indeed.
The screen is very good, but it could be a bit finer. It serves the purpose of showing music scores very well. However, the scrolling action is a bit too sensitive, sometimes when I wanted to scroll, it would yield a "select" action instead. But with some more training and adaptation, this could be reduced to a good level.
In order to use it with Windows 8, you have to search in the web for PdaNetA4126, you will then have the necessary driver installed.
Changjei is missing from this machine but you have to install "Go" for that, but Chinese punctuation is not well supported, the character sequence is not very nice as well. Some frequent wordings were not placed in the first few locations.
One hand operation is possible in most cases given by small hand despite the 5.7" screen.
If this phone could survive one year of active usage, I would think it justifies.
While we have cases about electric shock with iphone, we have explosion with Samsung devices, and thus I took the plunge to buy a Chinese brand mobile phone. After some initial feedback from real users, I have decided to give Zopo a chance.
I love to play Ukulele and so the ability to see music scores would be a huge plus to me, so I aim myself at those big models at 5.7" IPS screen, and so 950, 950H and 958 were my targets. 950 was a bit old, 950H and 958 differs by only one or two hundreds, so I get the one with highest specifications. I won't repeat all the specifications here since they could be fetched from the web very easily, here I give some general impression after one week of very active usage.
Two original batteries were included in the package. The manufacturer rated capacity is not very meaningful, and I was a pretty active user, and the battery can last for a whole day given I turned off 3G data when I sleep. For the rest of time, either Wifi or 3G were used actively. Charging the battery is like 4-5 hours from my impression, either the charger and the battery is not hot during the process. Given its huge screen, it's very good indeed.
The screen is very good, but it could be a bit finer. It serves the purpose of showing music scores very well. However, the scrolling action is a bit too sensitive, sometimes when I wanted to scroll, it would yield a "select" action instead. But with some more training and adaptation, this could be reduced to a good level.
In order to use it with Windows 8, you have to search in the web for PdaNetA4126, you will then have the necessary driver installed.
Changjei is missing from this machine but you have to install "Go" for that, but Chinese punctuation is not well supported, the character sequence is not very nice as well. Some frequent wordings were not placed in the first few locations.
One hand operation is possible in most cases given by small hand despite the 5.7" screen.
If this phone could survive one year of active usage, I would think it justifies.
Wednesday, February 1, 2012
摸着石頭過河
用計算機的角度來看, 這無非是等同於 online algorithm
每逢要用到 online algorithm, 一是因為 problem space 會隨時間改變, 二是因為根本沒有 optimal algorithm.
有些 online algorithm 仍可達到 optimal solution, 但此等情況實在有限
否則就是別的境況, 我們就只能用 heuristics, 倘若只是 heuristics, 大家就得虛心一點, 因為沒有人知怎樣才算是好, 但凡到此, 許多意見都不用太堅持, 當然, 道德真理原則除外
每逢要用到 online algorithm, 一是因為 problem space 會隨時間改變, 二是因為根本沒有 optimal algorithm.
有些 online algorithm 仍可達到 optimal solution, 但此等情況實在有限
否則就是別的境況, 我們就只能用 heuristics, 倘若只是 heuristics, 大家就得虛心一點, 因為沒有人知怎樣才算是好, 但凡到此, 許多意見都不用太堅持, 當然, 道德真理原則除外
Tuesday, January 31, 2012
Upgrading from Ubuntu Hardy Heron to Lucid Lynx
I just did by following the instruction on Ubuntu website but then the system refused to boot.
Later I found that it's a problem on grub, and by following the instructions here:
http://ubuntuforums.org/showthread.php?t=1581099
The problem was solved finally.
By sticking to LTS should be better but then upgrading between LTS should be more carefully since you're jumping between some major releases.
Later I found that it's a problem on grub, and by following the instructions here:
http://ubuntuforums.org/showthread.php?t=1581099
The problem was solved finally.
By sticking to LTS should be better but then upgrading between LTS should be more carefully since you're jumping between some major releases.
Thursday, December 15, 2011
Online Photo Editing
http://pixlr.com/editor/
This is a very powerful online photo editing website. If you're using a netbook like me or with a less than powerful desktop PC, this website is going to be great for you. No installation, fast startup and powerful indeed.
When people were switching their local storage to the cloud, we can even switch our application software to the cloud. It's a full realization of the concept that "the network is the computer" as proposed by Sun Microsystems.
Highly recommended.
This is a very powerful online photo editing website. If you're using a netbook like me or with a less than powerful desktop PC, this website is going to be great for you. No installation, fast startup and powerful indeed.
When people were switching their local storage to the cloud, we can even switch our application software to the cloud. It's a full realization of the concept that "the network is the computer" as proposed by Sun Microsystems.
Highly recommended.
Wednesday, December 7, 2011
Giving a new life to an aged notebook
My Sony Vaio U3 was designed for Windows XP and it has been doing
well in the past, and it runs smoothly. However, with the accumulated security update and new functionality, it was
getting slower and slower gradually to a point which is near useless.
I've tried to reinstall the whole thing from scratch but then it was
still slow to an unacceptable level.
Without a bootable removable device, I proceeded to do a PXE install via network. I found tfptd32 a perfect and simple application for that purpose since it serves as both DHCP and tftp at the same time. At first, I tried to install Ubuntu but after the long installation process, I found it's too slow as well.
I suspected that it was a result of imperfect Crusoe support (probably obsolete) in newer kernel. By following the instructions here:
https://help.ubuntu.com/community/LongRunHowTo
I managed to verify that my initial worry was invalid. Then, I proceed to install lubuntu instead. lubuntu has no PXE boot in mind, but then you can always install the base system via any other Ubuntu favor. When you were asked what packages to install, you may skip all packages and do it by hand afterward. Detail instructions on PXE install can be found here:
https://help.ubuntu.com/community/Installation/Netboot
After the installation of the base system, you may login via a text screen. And then you may install the lubuntu-desktop package via apt-get. And believe it or not, this is even faster than a straight PXE installation.
And after that, it would be nice to do the following:
sudo apt-get install ubuntu-restricted-extras
in order to install a number of non-free stuff.
Without a bootable removable device, I proceeded to do a PXE install via network. I found tfptd32 a perfect and simple application for that purpose since it serves as both DHCP and tftp at the same time. At first, I tried to install Ubuntu but after the long installation process, I found it's too slow as well.
I suspected that it was a result of imperfect Crusoe support (probably obsolete) in newer kernel. By following the instructions here:
https://help.ubuntu.com/community/LongRunHowTo
I managed to verify that my initial worry was invalid. Then, I proceed to install lubuntu instead. lubuntu has no PXE boot in mind, but then you can always install the base system via any other Ubuntu favor. When you were asked what packages to install, you may skip all packages and do it by hand afterward. Detail instructions on PXE install can be found here:
https://help.ubuntu.com/community/Installation/Netboot
After the installation of the base system, you may login via a text screen. And then you may install the lubuntu-desktop package via apt-get. And believe it or not, this is even faster than a straight PXE installation.
And after that, it would be nice to do the following:
sudo apt-get install ubuntu-restricted-extras
in order to install a number of non-free stuff.
Thursday, October 6, 2011
Pulling commodity from applications
It's interesting to see that for the last five to ten years, people have been pulling computer applications from computer to make standalone products like VCD player, DVD player, mp3 player, etc. All these were very successful.
However, the trend seems to be reversed these days when smart-phones and tablets were getting popular. You will probably not use a standalone mp3 player, and you will probably not use a standalone DVD player, instead, you watch movies and you listen to music via your tablets there days.
While it could be nice if a single machine could do everything for you, however, it could even be better if things just get smaller. For example, even your tablet is powerful enough to play music but then you will still need a headphone/earphone! What if your headphone/earphone could play the music by itself? If it can, your tablet will not be necessary any more.
Content-wise, putting stuff in the cloud for centralized storage and manipulation should be the best.
However, the trend seems to be reversed these days when smart-phones and tablets were getting popular. You will probably not use a standalone mp3 player, and you will probably not use a standalone DVD player, instead, you watch movies and you listen to music via your tablets there days.
While it could be nice if a single machine could do everything for you, however, it could even be better if things just get smaller. For example, even your tablet is powerful enough to play music but then you will still need a headphone/earphone! What if your headphone/earphone could play the music by itself? If it can, your tablet will not be necessary any more.
Content-wise, putting stuff in the cloud for centralized storage and manipulation should be the best.
Thursday, June 30, 2011
Price of Electronic Products
My DVD writer had failed for over a year but I was not so interested to replace it since we used to use USB drive for file copying, it's just much faster, cheaper and more reliable and higher capacity as well.
Last night my kid wanted to read a CD from her school and so I checked the price of a new DVD writer, and to my big surprise, it's just $143 HKD!
At that price, I wonder why the factory would still produce it... you can always make a mouse which should be way easier, and then the cost is about the same!
Last night my kid wanted to read a CD from her school and so I checked the price of a new DVD writer, and to my big surprise, it's just $143 HKD!
At that price, I wonder why the factory would still produce it... you can always make a mouse which should be way easier, and then the cost is about the same!
Monday, April 4, 2011
A minimalist approach
A good software is not a software with all sorts of functions, instead, it should be trimmed down such that none of its function is excessive.
Similar philosophy could be applied to people, we shall not own anything that is excessive, we shall not do anything that is useless.
Similar philosophy could be applied to people, we shall not own anything that is excessive, we shall not do anything that is useless.
Wednesday, September 1, 2010
Replacing the keyboard of my Asus Eee 1005HA
A few keys were found to be not responsing just 7 days after the expiry of the warranty. Called their service center and they said that they will charge me $300 HKD for inspection, and the cost for replacing a keyboard would be like $4xx HKD! It sounds crazy since this Eee costs me only $24xx one year ago.
Therefore, I went to ebay to buy a replacement keyboard and replace it myself. I ordered one last Friday and I got it now, and it's around $200 HKD shipped.
To remove the old keyboard, you need to loosen the clips under the battery.
After the above step, you can life up the keyboard with ease, no force required:
Remove the keyboard from its connector, put in the new one, and done!
Every keys work now!
Therefore, I went to ebay to buy a replacement keyboard and replace it myself. I ordered one last Friday and I got it now, and it's around $200 HKD shipped.
To remove the old keyboard, you need to loosen the clips under the battery.
After the above step, you can life up the keyboard with ease, no force required:
Remove the keyboard from its connector, put in the new one, and done!
Every keys work now!
Thursday, August 12, 2010
Great tool for USB bootable Linux
http://www.pendrivelinux.com/
Simple and yet powerful, it helps you to put a Linux distribution that you like on a USB thumbdrive. This is good for system recovery, emergency bootup, etc.
Highly recommended.
It's great for these days when USB thumbdrives are cheap and highly portable, a handy boot disk shall be great. It won't occupy much space as well.
Simple and yet powerful, it helps you to put a Linux distribution that you like on a USB thumbdrive. This is good for system recovery, emergency bootup, etc.
Highly recommended.
It's great for these days when USB thumbdrives are cheap and highly portable, a handy boot disk shall be great. It won't occupy much space as well.
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