Important!
Is there DKMS on CentOS? Unfortunately, there is not. So, that will make things harder under some circumstances.
20180329/DuckDuckGo dkms red hat
20180329/https://access.redhat.com/solutions/1132653
20180329/https://access.redhat.com/discussions/2336291
Important! Grainy film from Caffenol? Don’t worry, carefully looking at the results, the difference is from using ISO 400 film rather than ISO 100 film. So, don’t worry, Caffenol can do it well.
20180326/http://www.caffenol.org/recipes/
20180326/http://www.caffenol.org/film-development-chart/
Also, note that you can reuse Caffenol for about 5 developing rolls, but make sure to use distilled water and squeeze the air out of storage bottles if you do store it.
Also, I’ve found another interesting site: Digital Truth. They’re mostly a seller rather than a community.
20180326/https://www.digitaltruth.com
Gelatin. How many ways can it be made? It is essential to film, the gelatin emulsion. How much does it affect the cost of film?
20180331/https://en.wikipedia.org/wiki/Gelatin
Suffice it to say that for photographic use, gelatin is very cheap and highly stable. Well, so point in hand. If you want good proven long-term stability of your emulsion, yes, traditional gelatin is the way to go.
Oh, interesting. GeoPort. Connect to phone lines without a modem, a great feature on early Macintosh computers that outperformed PC softmodems.
Important! Again, I reiterate, because this is important! Wikipedia said that the serial ports on the Macintosh can actually be put into either RS-232 or RS-422 mode. You don’t need the special cable convert to go from RS-422 to RS-232.
20180323/DuckDuckGo macintosh run serial ports in rs-232 mode
This page provides very comprehensive information on interfacing Macintosh serial ports with commodity PC hardware, including wiring a LaserWriter to a PC serial port.
20180323/https://terpconnect.umd.edu/~zben/mac/MacSerHard.html
20180323/DuckDuckGo macintosh rs-232 serial cable
20180323/https://en.wikipedia.org/wiki/RS422
20180323/DuckDuckGo macintosh rs-232 serial cable mini din
Some online cables that I could buy? Given the previous sources, better double-check them manually before plugging them in. Oh, fine, the old fashioned computer usage style.
Important!
I really like this project idea and implementation. Create your own DSLR macro light ring. Also, the tiny Arduino-compatible microcontroller is really great.
20180323/https://learn.adafruit.com/3d-printed-camera-led-ring
Important! Thinking of getting more SLR camera gear, but where do you store it?
This is a general principle. When you work on putting objects together in larger scales, you’re working on architectural design. Yes, in the small scale component assembly is engineering tooling, but on the large scale it is architectural design. Ultimately the large scale has to follow some common architectural principles to be accessible to humans. That is, unless you are designing a larger system that is 100% robot automated. However, chances are that for larger systems, it will be all too tempting to send humans into the system to investigate failures, so it might as well be designed to accommodate humans to some extent, even though the standard operation may center around optimizing for machines.
And the smaller design scale? Like I’ve covered earlier, the preferred working method for this is a computer interface working method.
Is persistence really a good quality of success? “Keep at it.” Actutally, no. Matter of fact, it is one of the least important, but people like to overemphasize it, especially adults. Why? The “sunk cost fallacy.” Adults are particularly prone to being affected by this, but childern are completely immune. The idea is that if you’ve invested a lot of work into something, then you should keep working at it and it will come to fruition much sooner than would starting all over do. As it turns out, this is not true. Often times, people’s success is not related to how much work they put in, but to their substantiated conditions. To be totally blunt, such “demographic” substantiated conditions are by far the biggest thing that can be statistically measured and proven out to scale across multiple people, not just anecdotal evidence particular to one person. So yes, it turns out that if you want to be successful, you should start by choosing the areas that have the best success rates. That is the best success factor. Compared to the weight of this factor, the effort you put in is relatively “small,” but that doesn’t mean you should expect to get all the way through with very little effort, as might be the assumption of some smarter students who generally aren’t mentally challenged by school.
VMware notes.
Interesting. Here’s how to hot add CPU and RAM to a running VM in VMware. Note, however, that this requires proper operating system support, and some old RHEL doesn’t work with it.
20180323/https://www.unixarena.com/2014/11/dynamically-adding-memory-cpu-to-vmware-vm.html
20180323/https://access.redhat.com/solutions/165403
20180323/
Important! Python notes.
Can you use a Git repository with pip? Yes you can. You can even
specify branches or tags like follows.
git+https://example.com/repo.git@branch#egg=pkg&subdirectory=pkg_dir
20180321/https://pip.pypa.io/en/stable/reference/pip_install/#vcs-support
Again, I reiterate, because this is important! All manufactured objects have a manufacturing tolerance at which the details of the object in question are reproduced. By simply scanning at a sufficiently high resolution to capture that tolerance, one can reproduce every single originally designed detail in the manufactured object in question.
Also, human observational senses have a maximum detail level. For aesthetic but non-functional purposes, such as scanning scratches on the surface of an aged manufactured object, one can scan at the limit of human sensory perception, which may be higher than the manufacturing tolerance of the original object.
Again, I reiterate, because this is important! People always want to use shorter numbers. Unfortunately, such short numbers rely on symbolic codes that are often times unknown out of context. Yes, the business use of numbers, readable by customers but not understood outside the immediate business use.