I still think you're going about it all wrong, but so long as you're having fun, go for it.StephensCM wrote: ↑Tue Jul 28, 2020 11:56 pmthats why I'm trying working projects now, simple laser to photo resistor trip wire. and no I am not an electrical engineer but using certain command line functions to tactually acquire videos on using drills as generators for small battery packs, water generators to charge batteries as well as solar as well as URL to PDF I am able to download pages upon pages of how-to's to PDF format on a hard drive as well. With the way the world is going I'm just looking for simple tech to use for security. The hardware will come over time with working but the plan is all prep. no there will not be updates, security advice but if I'm able to have at time of collapse a working database of uses it's all prep. Ex. using pi camera, open cv for environment change (security camera), using server client (pi as a router) signals an alarm/Led warning/etc. Installing libraries from a drive has already been researched so that's not the problem. I've got server client to work for command line communication for short range, I am currently working on send receive through FM transceiver from pi to pi (walkie talkie style). Yes it's not going to be easy in a complete breakdown but with the resources, it wont be impossible to survive.
I can understand the sentiment. Even if the world isn't ending, the internet hasn't collapsed, one can still find oneself out on a limb.
It has nothing to do with that. The Github Arctic Code Vault created an open source code time capsule for future generations and has nothing to do with an apocalypse.StephensCM wrote: ↑Mon Aug 10, 2020 1:33 pmIf i am crazy, which is arguable not only from the "world ending anytime in my lifetime", to the "I want to use my pi in an apocolypse", why is github doing just that, saving open source code in a vault designed for the end of the world AND have the ability to rebuild what we have created out of scrap?
Data degradation results from the gradual decay of storage media over the course of years or longer. Causes vary by medium:
Solid-state media, such as EPROMs, flash memory and other solid-state drives, store data using electrical charges, which can slowly leak away due to imperfect insulation. The chip itself is not affected by this, so reprogramming it once per decade or so prevents decay. An undamaged copy of the master data is required for the reprogramming, which would not be possible if the data no longer existed on another device.
Magnetic media, such as hard disk drives, floppy disks and magnetic tapes, may experience data decay as bits lose their magnetic orientation. Periodic refreshing by rewriting the data can alleviate this problem. In warm/humid conditions these media, especially those poorly protected against ambient air, are prone to the physical decomposition of the storage medium.
Optical media, such as CD-R, DVD-R and BD-R, may experience data decay from the breakdown of the storage medium. This can be mitigated by storing discs in a dark, cool, low humidity location. "Archival quality" discs are available with an extended lifetime, but are still not truly permanent. However, data integrity scanning that measures the rates of various types of errors is able to predict data decay on optical media well ahead of uncorrectable errors (data loss) occuring.
Paper media, such as punched cards and punched tape, may literally rot. Mylar punched tape is another approach that does not rely on electromagnetic stability.