{"id":112830,"date":"2024-01-11T21:10:13","date_gmt":"2024-01-11T19:10:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/meshtastic-realizacziya-samodostatochnoj-mesh-seti-na-baze-peredatchikov-lora"},"modified":"2024-01-11T21:10:13","modified_gmt":"2024-01-11T19:10:16","slug":"meshtastic-realizacziya-samodostatochnoj-mesh-seti-na-baze-peredatchikov-lora","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/meshtastic-realizacziya-samodostatochnoj-mesh-seti-na-baze-peredatchikov-lora","title":{"rendered":"Meshtastic \u2014 implementace samostatn\u00e9 mesh s\u00edt\u011b na z\u00e1klad\u011b p\u0159ena\u0161e\u010d\u016f LoRa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Projekt Meshtastic vyv\u00edj\u00ed otev\u0159enou komunika\u010dn\u00ed platformu pro vytvo\u0159en\u00ed sob\u011bsta\u010dn\u00e9 decentralizovan\u00e9 s\u00edt\u011b pro p\u0159enos zpr\u00e1v, ve kter\u00e9 je ka\u017ed\u00fd bod s\u00edt\u011b propojen se sousedn\u00edmi body, ani\u017e by byl pou\u017eit centralizovan\u00fd sm\u011brova\u010d. K p\u0159enosu sign\u00e1lu se pou\u017e\u00edvaj\u00ed vys\u00edla\u010de a p\u0159ij\u00edma\u010de na b\u00e1zi protokolu LoRa, kter\u00e9 umo\u017e\u0148uj\u00ed p\u0159en\u00e1\u0161et data na nelicencovan\u00fdch frekvenc\u00edch rychlost\u00ed n\u011bkolika kilobit\u016f za sekundu na vzd\u00e1lenosti des\u00edtek nebo dokonce stovek kilometr\u016f (u\u017eivatel\u00e9 Meshtastic stanovili rekord 254 km). <\/p>\n

Projekt m\u016f\u017ee b\u00fdt vyu\u017eit pro organizaci spojen\u00ed v t\u011b\u017eko dostupn\u00fdch oblastech, p\u0159i z\u00e1chrann\u00fdch akc\u00edch nebo p\u0159i sportovn\u00edch aktivit\u00e1ch (nap\u0159. paraglidingu) v oblastech bez infrastruktury nebo v podm\u00ednk\u00e1ch \u0161patn\u00e9ho pokryt\u00ed mobiln\u00edmi oper\u00e1tory. Na ur\u010dit\u00fdch m\u00edstech mohou \u00fa\u010dastn\u00edci um\u00edstit autonomn\u00ed vys\u00edla\u010de, kter\u00e9 retransmituj\u00ed zpr\u00e1vy a jsou nap\u00e1jeny sol\u00e1rn\u00edmi panely, a sami \u00fa\u010dastn\u00edci mohou m\u00edt lok\u00e1ln\u00ed LoRa za\u0159\u00edzen\u00ed, kter\u00e1 vys\u00edlaj\u00ed sign\u00e1ly a jsou \u0159\u00edzena prost\u0159ednictv\u00edm p\u0159ipojen\u00ed ke smartphon\u016fm pomoc\u00ed protokolu Bluetooth.

\"Meshtastic<\/center> <\/p>\n

Ka\u017ed\u00fd \u00fa\u010dastn\u00edk s\u00edt\u011b m\u016f\u017ee odes\u00edlat a prohl\u00ed\u017eet textov\u00e9 zpr\u00e1vy, a tak\u00e9 pou\u017e\u00edvat prost\u0159edky geolokace zalo\u017een\u00e9 na GPS k vyhled\u00e1v\u00e1n\u00ed dal\u0161\u00edch \u00fa\u010dastn\u00edk\u016f. D\u00edky vytvo\u0159en\u00ed mesh s\u00edt\u011b jsou zpr\u00e1vy p\u0159ed\u00e1v\u00e1ny po \u0159et\u011bzu, co\u017e umo\u017e\u0148uje ka\u017ed\u00e9mu ve skupin\u011b obdr\u017eet zpr\u00e1vy od nejvzd\u00e1len\u011bj\u0161\u00edho \u00fa\u010dastn\u00edka, bez ohledu na mo\u017enost nav\u00e1z\u00e1n\u00ed p\u0159\u00edm\u00e9ho komunika\u010dn\u00edho kan\u00e1lu s n\u00edm. Je mo\u017en\u00e9 odes\u00edlat jak vys\u00edlac\u00ed, tak adresn\u00e9 zpr\u00e1vy ur\u010den\u00e9 konkr\u00e9tn\u00edmu \u00fa\u010dastn\u00edkovi. Odes\u00edlan\u00e9 zpr\u00e1vy jsou \u0161ifrov\u00e1ny pomoc\u00ed p\u0159edem vybran\u00fdch PSK (pre-shared key) kl\u00ed\u010d\u016f a algoritmu AES256. <\/p>\n

Protokol p\u0159enosu je dostate\u010dn\u011b jednoduch\u00fd: ka\u017ed\u00fd paket je odes\u00edl\u00e1n v re\u017eimu broadcast, po \u010dem\u017e je vzduch kontrolov\u00e1n na p\u0159\u00edjem potvrzen\u00ed od jednoho z \u00fa\u010dastn\u00edk\u016f. Pokud potvrzen\u00ed nen\u00ed p\u0159ijato, jsou provedeny t\u0159i dal\u0161\u00ed pokusy o odesl\u00e1n\u00ed po ur\u010dit\u00e9m \u010dasov\u00e9m limitu. P\u0159i p\u0159ijet\u00ed paketu se kontroluje, zda tento paket dorazil ji\u017e d\u0159\u00edve, a pokud ano, je ignorov\u00e1n; pokud ne \u2014 je retransmitov\u00e1n ostatn\u00edm \u00fa\u010dastn\u00edk\u016fm. P\u0159i ka\u017ed\u00e9m p\u0159enosu se v paketu sni\u017euje \u010d\u00edta\u010d skok\u016f a kdy\u017e dos\u00e1hne nuly, retransmise paketu se zastav\u00ed. <\/p>\n

Firmware pro p\u0159ij\u00edma\u010de a vys\u00edla\u010de je naps\u00e1n v jazyc\u00edch C\/C++ a je distribuov\u00e1n pod licenc\u00ed GPLv3. D\u00e1le jsou k dispozici mobiln\u00ed aplikace pro ovl\u00e1d\u00e1n\u00ed mesh s\u00edt\u011b ze smartphon\u016f na platform\u00e1ch Android a iOS, stejn\u011b jako webov\u00e9 rozhran\u00ed a Python knihovna pro automatizaci odes\u00edl\u00e1n\u00ed a p\u0159ij\u00edm\u00e1n\u00ed zpr\u00e1v. Firmware je p\u0159ipraven pro r\u016fzn\u00e9 desky zalo\u017een\u00e9 na \u010dipech ESP32, nRF52 a RP2040, jako nap\u0159\u00edklad RAK Meshtastic Start Kit (RAK4631 nRF52840, RAK11200 ESP32, RAK11310 RP2040), Station G1, LILYGO LoRa T3-S3, Nano G1, HELTEC LoRa V3 a Raspberry Pi Pico s modulem SX1262.

\"Meshtastic\"Meshtastic\"Meshtastic<\/center>
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u043e\u0435\u043a\u0442 Meshtastic \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e \u043a\u043e\u043c\u043c\u0443\u043d\u0438\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u0443\u044e \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0443 \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0441\u0430\u043c\u043e\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u0434\u0435\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043a\u0430\u0436\u0434\u0430\u044f \u0442\u043e\u0447\u043a\u0430 \u0441\u0435\u0442\u0438 \u0441\u0432\u044f\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u0441\u043e\u0441\u0435\u0434\u043d\u0438\u0435 \u0442\u043e\u0447\u043a\u0438, \u0431\u0435\u0437 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432. \u0414\u043b\u044f \u0442\u0440\u0430\u043d\u0441\u043b\u044f\u0446\u0438\u0438 \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u043f\u0440\u0438\u0451\u043c\u043e\u043f\u0435\u0440\u0435\u0434\u0430\u0442\u0447\u0438\u043a\u0438 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 LoRa, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u043d\u0435\u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0440\u0443\u0435\u043c\u043e\u043c \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u0435 \u0447\u0430\u0441\u0442\u043e\u0442 \u0441\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043a\u0438\u043b\u043e\u0431\u0438\u0442 \u0432 \u0441\u0435\u043a\u0443\u043d\u0434\u0443 \u043d\u0430 \u0440\u0430\u0441\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u0432 \u0434\u0435\u0441\u044f\u0442\u043a\u0438 \u0438\u043b\u0438 \u0434\u0430\u0436\u0435 \u0441\u043e\u0442\u043d\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":112831,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-112830","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Meshtastic \u2014 implementace sob\u011bsta\u010dn\u00e9 mesh s\u00edt\u011b na b\u00e1zi vys\u00edla\u010d\u016f LoRa | ProHoster","description":"Projekt Meshtastic rozv\u00edj\u00ed otev\u0159enou komunika\u010dn\u00ed platformu pro vytv\u00e1\u0159en\u00ed sob\u011bsta\u010dn\u00e9 decentralizovan\u00e9 s\u00edt\u011b p\u0159enosu zpr\u00e1v, ve kter\u00e9 se ka\u017ed\u00fd bod s\u00edt\u011b 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\u0441\u043e\u0441\u0435\u0434\u043d\u0438\u0435 \u0442\u043e\u0447\u043a\u0438, 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