{"id":101849,"date":"2021-10-28T16:22:44","date_gmt":"2021-10-28T14:22:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlena-novaya-plata-raspberry-pi-zero-2-w"},"modified":"2021-10-28T16:22:44","modified_gmt":"2021-10-28T14:22:45","slug":"predstavlena-novaya-plata-raspberry-pi-zero-2-w","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/predstavlena-novaya-plata-raspberry-pi-zero-2-w","title":{"rendered":"A fost prezentat noul plac\u0103 Raspberry Pi Zero 2 W","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Proiectul Raspberry Pi a anun\u021bat disponibilitatea noului model de plac\u0103 Raspberry Pi Zero W, care combin\u0103 dimensiuni compacte cu suport pentru Bluetooth \u0219i Wi-Fi. Noua model Raspberry Pi Zero 2 W p\u0103streaz\u0103 acela\u0219i factor de form\u0103 miniatural (65 x 30 x 5 mm), adic\u0103 este de aproximativ dou\u0103 ori mai mic dec\u00e2t Raspberry Pi obi\u0219nuit. V\u00e2nz\u0103rile au \u00eenceput deocamdat\u0103 doar \u00een Regatul Unit, Uniunea European\u0103, SUA, Canada \u0219i Hong Kong, iar livr\u0103rile \u00een celelalte \u021b\u0103ri vor fi deschise pe m\u0103sur\u0103 ce certificarea modulului wireless este finalizat\u0103. Pre\u021bul pentru Raspberry Pi Zero 2 W este de 15 dolari SUA (spre compara\u021bie, placa Raspberry Pi Zero W cost\u0103 10 dolari, iar Raspberry Pi Zero 5 dolari; produc\u021bia pl\u0103cilor mai ieftine va continua).

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

Principala diferen\u021b\u0103 a noului model Raspberry Pi Zero este trecerea la utilizarea SoC Broadcom BCM2710A1, similar cu cel folosit \u00een pl\u0103cile Raspberry Pi 3 (\u00een genera\u021bia anterioar\u0103 de pl\u0103ci Zero, era utilizat SoC Broadcom BCM2835, ca \u00een primul Raspberry Pi). Spre deosebire de Raspberry Pi 3, pentru a reduce consumul de energie, frecven\u021ba procesorului a fost redus\u0103 de la 1.4GHz la 1GHz. Conform testului de multiprocesare sysbench, actualizarea SoC a permis cre\u0219terea performan\u021bei pl\u0103cii de 5 ori (noua SoC utilizeaz\u0103 un CPU Arm Cortex-A53 quad-core pe 64 de bi\u021bi \u00een locul unui ARM11 ARM1176JZF-S unipc-core pe 32 de bi\u021bi). <\/p>\n

Ca \u0219i \u00een edi\u021bia anterioar\u0103, Raspberry Pi Zero 2 W vine cu 512MB RAM, port Mini-HDMI, dou\u0103 porturi Micro-USB (USB 2.0 cu OTG \u0219i un port pentru alimentare), slot microSD, conector GPIO cu 40 de pini (neconectat), ie\u0219iri pentru video compozit \u0219i camer\u0103 (CSI-2). Placa este echipat\u0103 cu un cip wireless care suport\u0103 Wi-Fi 802.11 b\/g\/n (2.4GHz), Bluetooth 4.2 \u0219i Bluetooth Low Energy (BLE). Pentru a trece certificarea FCC \u0219i pentru protec\u021bie \u00eempotriva interferen\u021belor externe, cipul wireless din noua plac\u0103 este acoperit cu un carcas\u0103 metalic\u0103. <\/p>\n

GPU-ul integrat \u00een SoC suport\u0103 OpenGL ES 1.1 \u0219i 2.0 \u0219i ofer\u0103 instrumente pentru accelerarea decod\u0103rii video \u00een formate H.264 \u0219i MPEG-4 cu calitate 1080p30, precum \u0219i pentru codificarea \u00een format H.264, extinz\u00e2nd domeniul de utilizare a pl\u0103cii pentru diferite dispozitive multimedia \u0219i sisteme pentru case inteligente. Din p\u0103cate, dimensiunea memoriei RAM este limitat\u0103 la 512 MB \u0219i nu poate fi crescut\u0103 din cauza restric\u021biilor fizice de dimensiune ale pl\u0103cii. Pentru a oferi 1GB RAM, ar fi fost necesar\u0103 aplicarea unei construc\u021bii multicouche complexe, a c\u0103rei implementare dezvoltatorii nu sunt \u00eenc\u0103 preg\u0103ti\u021bi.

\r\n \"Reda\u021bi\r\n
<\/div>\r\n <\/div> <\/center> <\/p>\n

Principala problem\u0103 \u00een proiectarea pl\u0103cii Raspberry Pi Zero 2 W a fost g\u0103sirea unei solu\u021bii pentru amplasarea memoriei LPDDR2 SDRAM. \u00cen prima genera\u021bie, memoria era plasat\u0103 \u00eentr-un strat suplimentar deasupra cipului SoC, realizat\u0103 prin tehnologia PoP (package-on-package), dar \u00een noile cipuri Broadcom aceast\u0103 abordare nu putea fi aplicat\u0103 din cauza cre\u0219terii dimensiunii SoC-ului. Pentru a rezolva problema, s-a dezvoltat \u00eempreun\u0103 cu compania Broadcom o variant\u0103 special\u0103 a cipului, \u00een care memoria a fost integrat\u0103 \u00een SoC.

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

O alt\u0103 problem\u0103 a fost cre\u0219terea disip\u0103rii termice din cauza utiliz\u0103rii unui procesor mai puternic. Problema a fost rezolvat\u0103 prin ad\u0103ugarea unor straturi groase de cupru \u00een plac\u0103 pentru a conduce \u0219i dispersa c\u0103ldura de la procesor. Greutatea pl\u0103cii a crescut semnificativ, dar solu\u021bia a fost considerat\u0103 reu\u0219it\u0103, suficient\u0103 pentru a evita supra\u00eenc\u0103lzirea \u00een timpul unui test de stres nelimitat de algebr\u0103 liniar\u0103 LINPACK, la o temperatur\u0103 ambiental\u0103 de 20 de grade. <\/p>\n

Dintre dispozitivele concurente, cea mai apropiat\u0103 de Raspberry Pi Zero 2 W este placa chinez\u0103 Orange Pi Zero Plus2, care are dimensiuni de 46\u00d748 mm \u0219i este disponibil\u0103 la un pre\u021b de 35 dolari, av\u00e2nd 512 MB RAM \u0219i chipset Allwinner H3. Placa Orange Pi Zero Plus2 dispune de 8 GB EMMC Flash, un port HDMI complet, slot TF Card, USB OTG \u0219i contacte pentru conectarea unui microfon, receptor IR \u0219i dou\u0103 porturi USB suplimentare. Placa este echipat\u0103 cu un procesor quad-core Allwinner H5 (Cortex-A53) cu GPU Mali Mali450 sau Allwinner H3 (Cortex-A7) cu GPU Mali400MP2. \u00cen loc de un conector GPIO cu 40 de pini, se ofer\u0103 un conector de 26 de pini, compatibil cu Raspberry Pi B+. De asemenea, este disponibil\u0103 o variant\u0103 mai pu\u021bin puternic\u0103, Orange Pi Zero 2, dotat\u0103 cu 1 GB RAM \u0219i port Ethernet pe l\u00e2ng\u0103 Wi-Fi.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u043e\u0435\u043a\u0442 Raspberry Pi \u043e\u0431\u044a\u044f\u0432\u0438\u043b \u043e \u043f\u043e\u0441\u0442\u0443\u043f\u043b\u0435\u043d\u0438\u0438 \u0432 \u043f\u0440\u043e\u0434\u0430\u0436\u0443 \u043d\u043e\u0432\u043e\u0433\u043e \u043f\u043e\u043a\u043e\u043b\u0435\u043d\u0438\u044f \u043f\u043b\u0430\u0442\u044b Raspberry Pi Zero W, \u0441\u043e\u0447\u0435\u0442\u0430\u044e\u0449\u0435\u0439 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0435 \u0440\u0430\u0437\u043c\u0435\u0440\u044b \u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 Bluetooth \u0438 Wi-Fi. \u041d\u043e\u0432\u0430\u044f \u043c\u043e\u0434\u0435\u043b\u044c Raspberry Pi Zero 2 W \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0430 \u0432 \u0442\u043e\u043c \u0436\u0435 \u043c\u0438\u043d\u0438\u0430\u0442\u044e\u0440\u043d\u043e\u043c \u0444\u043e\u0440\u043c-\u0444\u0430\u043a\u0442\u043e\u0440\u0435 (65 x 30 x 5 \u043c\u043c), \u0442.\u0435. \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430 \u043c\u0435\u043d\u044c\u0448\u0435 \u043e\u0431\u044b\u0447\u043d\u043e\u0433\u043e Raspberry Pi. \u041f\u0440\u043e\u0434\u0430\u0436\u0438 \u043f\u043e\u043a\u0430 \u043d\u0430\u0447\u0430\u043b\u0438\u0441\u044c […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101850,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101849","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\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\udd47Noua plac\u0103 Raspberry Pi Zero 2 W a fost 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