If any number divided by infinite is 0, since time is infinite, how and why did we exist? Shouldn't the chance of our existence be 0?
Tuesday, November 26, 2024
Wednesday, September 28, 2022
html selectors and FS-IA6B receiver
random posts.
Playing with remote controls and want to do some projects with them. Bought a Flysky FS-i6X 6 channel remote controller, and want to use it to control some servos. The manual is minimal, and found this site https://blog.vertile.com/article/flysky-i6-radio-setup-and-hacking-guide/ with good information.
Found the page on html selectors https://drafts.csswg.org/selectors/
Tuesday, October 26, 2021
found my old account finally
I lost this account for a long time, can't remember which user I used to login this. Today by some really strange event (I found one of my favorite professors back in college, found his blog and that made me want to recover my blog).
Anyway, a lot has happened. Started doing a bunch of arduino/pi stuff, but lost interest. I am now primarily on node/react, got looped back to C++/.net for a small side project for my church on and off (to recognize faces to solve the seat assignment issue at my church). Let's see what happens next.
Wednesday, September 23, 2015
cloud-init slowness
edit /etc/cloud/cloud.cfg.d/90_dpkg.cfg, and change [...] to [ None ], fixed for me :)
Friday, April 3, 2015
icse014a usb problems
After some search found this page: http://leftbraintinkering.blogspot.com/2013/05/usb-to-serial-prolific-2303-device.html . The guy was doing the same with some other device and found windows 8 no longer support the driver. So some smart guy wrote something to fix it https://www.sendspace.com/file/5m5afw
Now it is working and I can control the device, thanks guys!
Saturday, July 26, 2014
ffmpeg shrink file
Did some research, so finally find a way to do it in batch:
1. loop all files do: ffmpeg -i input.mts -fv scale=720:-1 output.mp4
2. drop all the mp4 to youtube :)
Thursday, June 5, 2014
CallContext ThreadStatic and SQL transactions
And most of our old code, the SQL transactions runs on Thread local. This won't work on async/awaits since now they are all interrupt like and can run on any thread. (we are not running with coordinated transactions for other reasons)
One of our guys implemented the new way initially with a static context, and we have to pass the context name to all calls. When it is time for me to fix some of the code, it just feels so unnatural, no only there are a lot of code changes, if you miss one they won't be in the transaction.
And during the research, someone found CallContext, it works very much like Thread Statistic, and I think Microsoft copies it to new threads, so with simple fixes everything is working again (of course anything in a transaction is synchronized again without the DTC, that we can live with for now).