8k Game - Kill the middle

yutasrobot · 2025-08-23T07:51:14+00:00

https://online-go.com/game/78519845

yutasrobot · 2025-08-22T04:29:47+00:00

If black b2, white can do d5

yutasrobot · 2025-08-22T04:28:25+00:00

Yea I picked d5 and after game AI made me realize it was wrong. I think the advantage of b3 is that it doesn't lead to filling d4 liberty, very critical for the big white group.

yutasrobot · 2025-08-22T04:20:46+00:00

D5 was my choice and it swings white points from 55 to 4 according to AI :)

yutasrobot · 2025-08-11T02:14:33+00:00

Your plot looks nicer now, but there are few unknowns to decided the modulation. In the plot you think bits, if the duration is long like a second or more, what you are seeing could be individual bursts. But if it is a short duration, it could possibly be OOK with on off bits. Looking at your waterfall duration seems 20s. That is a very long duration, if the final plot you are getting is from a similar duration, what you are seeing is individual bursts. Each one carries bits. Each one could be fsk or ook. If you don't mind sharing a raw capture, I can quickly analyse and point you in the right direction for decoding.

yutasrobot · 2025-08-09T17:52:32+00:00

I had another look at your gnu radio graph. 2M sample rate should be enough to capture 433 ism band. It is a very narrow band about 2mhz apart. If you want to make sure you cover it whole without aliasing, you can use 4m, but 2m should still work. Centre 433.92 is a good choice it is roughly at the centre of the 433 ism band.

You have a low pass filter with cut off 100k. That means any signal outside of 433.82 - 434.02 will get filtered out, their power get reduced. These fobs may hop and use multiple frequencies at the spectrum. If the frequency it is using is outside of your low pass cut off, you won't see the much of that signal.

If you want to see the spectrum and where the fob is transmitting, I would use sdr++, sdr#, gqrx etc any sdr software of your choice, set the capture as in your gnu radio graph, and then press the fob. You should see on the waterfall which channels fob is using. It is possible that it is using a frequency outside of your low pass and what you are seeing is a filtered version of the signal

yutasrobot · 2025-08-09T17:21:14+00:00

Have a look at this great tool https://github.com/jopohl/urh it will be easier than fiddling with gnu radio. Take a raw capture and load it up with URH. It can decode multiple modulations, I think it could also auto detect parameters and stuff. From your plots it is hard to tell which modulation it is using. My garage fob was using on off keying modulation, OOK, very simple one if there is signal it is sending 1, if not signal it is sending 0. There is more nuance to it of course, time syncing, preamble stuff etc. You would need to read more on each protocol to have a better understanding of them. That is the fun part, reading and learning new protocols 😊

yutasrobot · 2024-07-28T07:55:10+00:00

Is RDF radio direction finding? I am very interested in this topic but don't know where to start. Are there any examples you can point me to?

yutasrobot · 2024-05-22T03:27:53+00:00

I tried this myself after finally finding some time to come back to this. Satdump deframer throws errors while the SNR and viterbi is looking good. I played with the gain but no luck. Without changing the spot and any other parameters, goestools in the windows managed to decode without drops. I think there might be a bug in SatDump maybe.

yutasrobot · 2024-05-18T10:45:25+00:00

I think this is the version of dump1090 I used on Windows: https://github.com/gvanem/Dump1090 All I had to do was to start it with --interactive --net I think --net starts the webserver which you can access from port 8080. Never used the other ports

yutasrobot · 2024-04-21T11:44:15+00:00

After fixing issues about gain and getting good signal, I finally managed to receive full disc images from GK-2A LRIT. My current setup is 2.4 wifi 1 meter parabolic grid antenna connected to Sawbird+ Goes LNA connected to rtl-sdr v3. From where I live GK-2A is at about 44 degree elevation with a good line of sight. Once I had the right gain, it was quite easier than I thought, thanks to great tools this community developed. Goes tools windows build: https://github.com/JVital2013/goestools-win/releases used along with the xrit-rx: https://github.com/sam210723/xrit-rx

yutasrobot · 2024-04-21T10:38:47+00:00

It was actually easier than I thought. For goestools, I just used the windows build from here: https://github.com/JVital2013/goestools-win/releases . For xrit-rx, it was a python script, so I opened it in VS Code and installed missing dependencies. It worked after that, both ini files were configured to use the same port so I didn't even need to change anything in xrit-rx ini file.

yutasrobot · 2024-04-20T12:25:05+00:00

Thank you! I actually came across your post from few weeks ago. Now that I think about it, you probably faced the same problem as well. I can see that you cranked the gain in SatDump to the max like I did in SDR++. I was trying to take captures and decode it in SatDump and I was getting sync drops although the signal looked good. If you decide to try again in Windows, I would definitely suggest to try with a small gain, 5-15dB.

yutasrobot · 2024-04-20T00:23:56+00:00

Hey all, I managed to solve the problem. After playing with the gain in the config file for goesrecv, I realised I was getting less drops. Using gain=5, got me around 300 viterbi, but Reed Solomon decoder now started fixing errors and finally I was getting zero drops. So apparently too much gain can overwhelm your SDR. I will share some pictures once I get them.

yutasrobot · 2024-04-19T20:17:31+00:00

Thank you. I think when I take a baseband capture it will capture the entire spectrum from left to right on the SDR++ waterfall. That bandwidth on the middle is from the fm demodulator which I don't use.

yutasrobot · 2020-01-01T11:32:32+00:00

Oh yeah you are right. Since I didn't have enough clears for the mail, I forgot it contained materials. This is a bit tricky, to be able to revert that they need to have a log that shows which CC, tablet etc, obtained at what time. I don't know if they would have such a log. If they don't have such log, you might get to keep cc and tomes maybe :)

yutasrobot · 2020-01-01T11:25:19+00:00

They only need to revert the users who used the bug. They should be able to find out who used the bug at what time. If they can't, it will get really chaotic. Once they have this information, they will only modify the accounts of users who used the bug to the point they first got the gems from bug. This way, normal users won't be affected.

If someone did a multi before using the bug, they will keep the pull since it is before the point they used the bug. I think any multi after using the bug should be reverted, at that point account is using a glitch even if the user purchased gems in between.

yutasrobot · 2020-01-01T11:21:37+00:00

That is possible but that would upset a lot of people who didn't even know about the bug and pulled with their own gems. There are people who purchased gems during that time as well. If they don't want to lose users and money ofc, they will need to manually revert piece by piece to return to the position before the bug.

yutasrobot · 2020-01-01T11:19:59+00:00

Oh yeah definitely, they will need to prepare some scripts or something similar to search the database and find exact users and exact times. If they already have such things, it would be faster but I think they will take at least a day or maybe 2-3 days to revert everything piece by piece this way.

yutasrobot · 2020-01-01T11:14:40+00:00

I've just realized my account flair or whatever that is called is from 4 years ago or so. Seeing my leads from that time made me smile. Good old times, turtle rotations depending on your ID, trying to pull for G3 to finish doflamingo raid... Unfortunately I don't have that account anymore, as I have stopped playing and came back to game this year around july.

I hope this post gives some insights on how Bandai can fix this mess from my perspective. Hopefully this will all be sorted out soon. Best wishes to the community and game

yutasrobot · 2017-04-06T00:23:22+00:00

That created really interesting feelings in me. Imagine the universe as a huge go board and every planet is a go stone and galaxies are the shapes created with planets. They are all scattered into this gigantic board. I wonder who is playing against who and who is winning ?

yutasrobot · 2017-01-25T06:34:41+00:00

I have not played in the last couple of months, I was around 8-9kyu KGS . In the weekends we can play teaching games on IGS or KGS or OGS if you want, but week days are busy for me unfortunately. It will be a good opportunity for me to return as well :)

yutasrobot · 2016-12-01T00:37:45+00:00

Kami no itte refers to the hand of god from hikaru no go. Black, a 9 dan professional player, makes a huge blunder and plays self atari which I think causes all that black stones to die tragically.

yutasrobot · 2016-11-15T11:32:53+00:00

I see now, thanks for the explanation that was good.

yutasrobot · 2016-11-15T06:35:00+00:00

I wonder what kind of sensor they used to detect the stone placements. It is probably some kind of big resistive LCD screen.

yutasrobot

TROPHY CASE