{"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\/et\/blog\/news\/predstavlena-novaya-plata-raspberry-pi-zero-2-w","title":{"rendered":"Tutvustatakse uut plaati Raspberry Pi Zero 2 W","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Raspberry Pi projekt kuulutas v\u00e4lja uue p\u00f5lvkonna Raspberry Pi Zero W plaadi, mis \u00fchendab endas kompaktse suuruse ja Bluetoothi ning Wi-Fi toe. Uus mudel Raspberry Pi Zero 2 W on valmistatud samas miniatuurses vormifaktoris (65 x 30 x 5 mm), see t\u00e4hendab, et see on umbes kaks korda v\u00e4iksem tavalistest Raspberry Pi mudelitest. M\u00fc\u00fck on alustatud ainult \u00dchendkuningriigis, Euroopa Liidus, Ameerika \u00dchendriikides, Kanadas ja Hongkongis, \u00fclej\u00e4\u00e4nud riikidesse tarned avatakse vastavalt traadita moduli sertifitseerimise edusammudele. Raspberry Pi Zero 2 W hind on 15 USA dollarit (v\u00f5rdluseks, Raspberry Pi Zero W hind on 10 dollarit ja Raspberry Pi Zero hind 5 dollarit; odavamatel plaatidel toodang j\u00e4tkub).

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

Uue Raspberry Pi Zero mudeli peamine erinevus on \u00fcleminek SoC Broadcom BCM2710A1 kasutamisele, mis on sarnane Raspberry Pi 3 plaadi omaga (eelmisel Zero p\u00f5lvkonnal kasutati SoC Broadcom BCM2835, nagu esimesel Raspberry Pi-l). Erinevalt Raspberry Pi 3-st on energia tarbimise v\u00e4hendamiseks protsessori sagedus v\u00e4hendatud 1,4 GHz-lt 1 GHz-le. Sysbench mitme l\u00f5ime test n\u00e4itab, et SoC uuendamine on suurendanud plaadi j\u00f5udlust viis korda (uues SoC-is kasutatakse neljatuumalist 64-bitist CPU Arm Cortex-A53, mitte \u00fchte tuuma 32-bitise ARM11 ARM1176JZF-S asemel). <\/p>\n

Nagu eelmisel versioonil, on Raspberry Pi Zero 2 W-l 512 MB RAM-i, Mini-HDMI port, kaks Micro-USB porti (USB 2.0 OTG ja toiteport), microSD pesa, 40-pinne GPIO pesa (ei ole keevitatud), komposiitvideo ja kaamera (CSI-2) v\u00e4ljundid. Plaat on varustatud traadita kiibiga, mis toetab Wi-Fi 802.11 b\/g\/n (2.4GHz), Bluetooth 4.2 ja Bluetooth Low Energy (BLE). FCC sertifitseerimise l\u00e4bimiseks ja v\u00e4listest h\u00e4iretest kaitsmiseks on uue plaadi traadita kiip kaetud metallkorpusega. <\/p>\n

SoC-sse integreeritud GPU toetab OpenGL ES 1.1 ja 2.0 ning pakub vahendeid H.264 ja MPEG-4 video dekodeerimise kiirendamiseks 1080p30 kvaliteedis ning H.264 formaadis kodeerimise v\u00f5imalusi, mis laiendab plaadi kasutusv\u00f5imalusi erinevates multimeedia seadmetes ja nutikodu s\u00fcsteemides. Kahjuks on operatiivm\u00e4lu piiratud 512 MB ja seda ei saa f\u00fc\u00fcsiliste m\u00f5\u00f5tmete t\u00f5ttu suurendada. 1 GB RAM-i pakkumiseks oleks vajalik keerukama mitmekihilise konstruktsiooni rakendamine, mille arendajad ei ole veel valmis ellu viima.

\r\n \"M\u00e4ngi\r\n
<\/div>\r\n <\/div> <\/center> <\/p>\n

Raspberry Pi Zero 2 W plaadi projekteerimise peamine probleem oli LPDDR2 SDRAM m\u00e4lumooduli paigaldamise k\u00fcsimuse lahendamine. Esimese p\u00f5lvkonna plaadil oli m\u00e4lu viimase kohal SoC kiibi \u00fcle, kasutades PoP (package-on-package) tehnoloogiat, kuid uutes Broadcomi kiipides ei \u00f5nnestunud seda meetodit kasutada SoC suuruse suurenemise t\u00f5ttu. Selle probleemi lahendamiseks t\u00f6\u00f6tati koos Broadcomiga v\u00e4lja spetsiaalne kiibi versioon, kus m\u00e4lu integreeriti SoC-i.

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

Teiseks probleemiks kujunes k\u00f5rgem soojusv\u00e4\u00e4ne, mis oli tingitud v\u00f5imsama protsessori kasutamisest. Probleem saadi lahendatud, lisades plaati paksu vasest kihid, et suunata ja hajutada soojust protsessorilt. Plaadi kaal suurenes selle t\u00f5ttu m\u00e4rgatavalt, kuid meetod osutus t\u00f5husaks ning seda oli piisavalt, et v\u00e4ltida \u00fclekuumenemist, tehes piiramatute kestusega lineaarse algebra stressitesti LINPACK, mille keskkonnatemperatuur oli 20 kraadi. <\/p>\n

Konkurentidest on k\u00f5ige l\u00e4hemal Raspberry Pi Zero 2 W hiina plaat Orange Pi Zero Plus2, mille m\u00f5\u00f5tmed on 46×48 mm ja mis on saadaval 35 dollari eest koos 512 MB RAM-i ja Allwinner H3 kiibiga. Orange Pi Zero Plus2 plaadil on 8 GB EMMC Flash, t\u00e4ielik HDMI-port, TF-kaardi pesa, USB OTG ja kontaktid mikrofoni, infrapuna vastuv\u00f5tja (IR) ning kahe t\u00e4iendava USB-pordi \u00fchendamiseks. Plaat on varustatud neljatuumalise Allwinner H5 (Cortex-A53) protsessoriga koos GPU Mali Mali450 v\u00f5i Allwinner H3 (Cortex-A7) protsessoriga koos GPU Mali400MP2. 40-poolse GPIO asemel on saadaval l\u00fchem 26-poolne \u00fchendus, mis on \u00fchilduv Raspberry Pi B+-ga. Saadaval on ka v\u00e4hem v\u00f5imas Orange Pi Zero 2 plaat, kuid sellel on 1 GB RAM-i ja Etherneti port koos Wi-Fi-ga.
\n
Allikas: opennet.ru<\/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 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