opus5: redact some more articles - tgtimes - The Gopher Times HTML git clone git://bitreich.org/tgtimes git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/tgtimes DIR Log DIR Files DIR Refs DIR Tags DIR README --- DIR commit e52137bb2fd839ea6446af2c0cc70ea4ea31b5b3 DIR parent 86e908988e5cc304c0f51b9eaf3511d9519ab0af HTML Author: Josuah Demangeon <me@josuah.net> Date: Sun, 29 May 2022 22:01:40 +0200 opus5: redact some more articles Diffstat: M opus5/article-tgtimes-animated-tex… | 1 + M opus5/article-tgtimes-ascii-art-re… | 1 + M opus5/article-tgtimes-bluetooth-br… | 78 ++++++++++++++++++++++++++++++- 3 files changed, 78 insertions(+), 2 deletions(-) --- DIR diff --git a/opus5/article-tgtimes-animated-text-art.mw b/opus5/article-tgtimes-animated-text-art.mw @@ -1,5 +1,6 @@ .SH linuxconsole Animated ASCII art +.2C 40v . .PP With all the history of ASCII art and demoscene, DIR diff --git a/opus5/article-tgtimes-ascii-art-rendering.mw b/opus5/article-tgtimes-ascii-art-rendering.mw @@ -1,5 +1,6 @@ .SH tgtimes Synthetic ASCII Art +.2C 80v . .PP Sometimes, an entirely new way to approach problems is found. DIR diff --git a/opus5/article-tgtimes-bluetooth-brain.mw b/opus5/article-tgtimes-bluetooth-brain.mw @@ -1,6 +1,80 @@ - +.SH josuah +Wireless, wireless everywhere +.2C 60 +. +.PP +Wires! Cables! Connectors! +Computer and electric systems seems to befriend with plugs and sockets. +Why is the computer industry running away from them for everything exposed to users? +. +.IP "Where do I plug the cable?" +Everyone needfully face this question at least once, be it the first time they own a computer. +From the various connector shapes to choose from, to the various set of protocol the Universal USB connector supports, +cables provoke confusion to cable-haters and computer neophytes. +. +.IP "Cables are ugly" +It might not be true for everyone, but computer manufacturers seems to say differently. +Starting with the name "wireless", that comes by opposition to wires, supposing they were something to avoid. +Cable management is a full time job for datacenter jockeys, and a chore for the cable-hating computer user. +. +.IP "Cables are immobile" +Unless making use of an uncommon cable management strategy, +objects connected to cables cannot be carried too far away without unplugging everything devices are connected to. +. +.PP +So here comes wireless. +While not frequent in large computer infrastructure, wireless is invading the market along with battery devices. +Using radio waves to make device talk to each other, at various frequencies, modulation, datarate and distance. +Ready to sacrifice any amount of good engineering to make itself more seducing to the market, +marketting perpetuates the same illusion of making computer troubles fade away with wireless. +. +.PP +From the Bluetooth protocol swamp of mixed edge-cases and compmlexity, +to the security vulnerabilities of Wi-Fi, +to the security vulnerabilities of Bluetooth, +to the proprietary but popular protocols like LoRaWan, +to the unreliability and unstability as opposed to wires, +to the black box of wireless broadband such as UTMS and LTE, +Wireless does not have the same fame among developers valuing simplicity and reliability. +. +.PP +Even the United Army holds griefs against wireless such as Bluetooth, +and disrecommand it for use by militaries: +.FS +https://armypubs.army.mil/epubs/DR_pubs/DR_a/pdf/web/ARN4771_Pam25-2-9_Final_Web.pdf +.FE +. +. .QP Do not use Bluetooth devices to send, receive, store, or process classified information. +. +.PP +Nontheless, wireless is fun, beautiful, and filled with culture. +While marketting pushed engineers from the wireless cliff, +long before computer came, radio waves were put at good use in the most simple forms: radio communication. +From the AM and FM radio stations to listen while on the road, +the medium-range boat, airplane, truck, pedestrian talkies, and even satellite communications, +hobbyists building-up their own antennas for inter-continental communication, +garage door openners and remotely controlled drones... +. +.PP +Complex and twisted wireless protocols are only a special case of radio communication, +and simple unobfuscated methods of communication are possible, and even frequent. +. +.PP +Be it a simple and inexpensive RTL SDR dongle receiver .FS -https://armypubs.army.mil/epubs/DR_pubs/DR_a/pdf/web/ARN4771_Pam25-2-9_Final_Web.pdf +https://www.rtl-sdr.com/ +.FE +to complete receiver-emitters such as HackRF +.FS +https://greatscottgadgets.com/hackrf/one/ +.FE +or LimeSDR +.FS +https://limemicro.com/products/boards/limesdr/ .FE +among others, the gears for letting one experiment with radio transmissions. +. +.PP +This is an invitation for everyone to discover or rediscover the universe of electromagnetic fields communication.