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tarticle-tgtimes-Bluetooth-Brain.mw - tgtimes - The Gopher Times |
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git clone git://bitreich.org/tgtimes git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/tgtimes (git://bitreich.org) |
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tarticle-tgtimes-Bluetooth-Brain.mw (3600B) |
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1 .SH tgtimes |
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2 Wireless, wireless everywhere |
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3 .2C 60 |
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4 . |
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5 .PP |
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6 Wires! Cables! Connectors! |
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7 Computer and electric systems seems to befriend with plugs and sockets. |
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8 Why is the computer industry running away from them for everything exposed to users? |
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9 . |
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10 .IP "Where do I plug the cable?" |
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11 Everyone needfully face this question at least once, be it the first time they own a computer. |
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12 From the various connector shapes to choose from, to the various set of protocol the Universal USB connector supports, |
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13 cables provoke confusion to cable-haters and computer neophytes. |
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14 . |
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15 .IP "Cables are ugly" |
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16 It might not be true for everyone, but computer manufacturers seems to say differently. |
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17 Starting with the name "wireless", that comes by opposition to wires, supposing they were something to avoid. |
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18 Cable management is a full time job for datacenter jockeys, and a chore for the cable-hating computer user. |
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19 . |
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20 .IP "Cables are immobile" |
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21 Unless making use of an uncommon cable management strategy, |
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22 objects connected to cables cannot be carried too far away without unplugging everything devices are connected to. |
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23 . |
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24 .PP |
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25 So here comes wireless. |
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26 While not frequent in large computer infrastructure, wireless is invading the market along with battery devices. |
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27 Using radio waves to make device talk to each other, at various frequencies, modulation, datarate and distance. |
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28 Ready to sacrifice any amount of good engineering to make itself more seducing to the market, |
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29 marketting perpetuates the same illusion of making computer troubles fade away with wireless. |
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30 . |
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31 .PP |
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32 From the Bluetooth protocol swamp of mixed edge-cases and compmlexity, |
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33 to the security vulnerabilities of Wi-Fi, |
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34 to the security vulnerabilities of Bluetooth, |
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35 to the proprietary but popular protocols like LoRaWan, |
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36 to the unreliability and unstability as opposed to wires, |
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37 to the black box of wireless broadband such as UTMS and LTE, |
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38 Wireless does not have the same fame among developers valuing simplicity and reliability. |
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39 . |
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40 .PP |
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41 Even the United Army holds griefs against wireless such as Bluetooth, |
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42 and disrecommand it for use by militaries: |
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43 .FS |
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44 https://armypubs.army.mil/epubs/DR_pubs/DR_a/pdf/web/ARN4771_Pam25-2-9_Final_Web.pdf |
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45 .FE |
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46 . |
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47 . |
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48 .QP |
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49 Do not use Bluetooth devices to send, receive, store, or process classified information. |
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50 . |
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51 .PP |
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52 Nontheless, wireless is fun, beautiful, and filled with culture. |
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53 While marketting pushed engineers from the wireless cliff, |
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54 long before computer came, radio waves were put at good use in the most simple forms: radio communication. |
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55 From the AM and FM radio stations to listen while on the road, |
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56 the medium-range boat, airplane, truck, pedestrian talkies, and even satellite communications, |
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57 hobbyists building-up their own antennas for inter-continental communication, |
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58 garage door openners and remotely controlled drones... |
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59 . |
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60 .PP |
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61 Complex and twisted wireless protocols are only a special case of radio communication, |
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62 and simple unobfuscated methods of communication are possible, and even frequent. |
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63 . |
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64 .PP |
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65 Be it a simple and inexpensive RTL SDR dongle receiver |
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66 .FS |
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67 https://www.rtl-sdr.com/ |
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68 .FE |
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69 to complete receiver-emitters such as HackRF |
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70 .FS |
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71 https://greatscottgadgets.com/hackrf/one/ |
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72 .FE |
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73 or LimeSDR |
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74 .FS |
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75 https://limemicro.com/products/boards/limesdr/ |
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76 .FE |
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77 among others, the gears for letting one experiment with radio transmissions. |
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78 . |
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79 .PP |
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80 Every year, the American Relay Radio League (ARRL) is publishing a large book focused on radiocommunication, |
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81 and its chapter 1 section 1 is \fIDo-It-Yourself Wireless\fR. |
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82 . |
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83 .PP |
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84 This is an invitation for everyone to discover or rediscover the universe of electromagnetic fields communication. |
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