Umndeni wama-raspberry uyakhula
I-Raspberry Pi Foundation (www.raspberrypi.org) ikhiphe inguqulo ebuyekeziwe ye-Model B: Model B+. Uma uthi nhlá, izinguquko ezenziwe ku-B+ azibonakali njengenguquko. I-Same SoC (Isistimu ku-Chip, BCM2835), inani elifanayo noma uhlobo lwe-RAM, namanje akukho flash. Futhi nokho i-B + ixazulula ngempumelelo izinkinga eziningi zansuku zonke ezihlukumeza abasebenzisi bale khompyutha encane.
Okuphawuleka kakhulu izimbobo ezengeziwe ze-USB. Inombolo yabo inyukile isuka ku-2 yaya ku-4. Ngaphezu kwalokho, imojula yamandla entsha kufanele ikhulise ukuphuma kwayo kwamanje kuze kufike ku-1.2A [1]. Lokhu kuzokuvumela ukuthi unikeze amandla ngokuqondile kumadivayisi "anamandla amakhulu", njengamadrayivu angaphandle. Olunye ushintsho oluphawulekayo i-slot yensimbi ye-microSD esikhundleni se-SD enosayizi ogcwele wepulasitiki. Mhlawumbe i-trifle, kodwa ku-B + ikhadi cishe aliphumi ngaphezu kwebhodi. Lokhu nakanjani kuzokhawulela inani lezingozi ezihlobene nesikhala esiphukile, ukudabuka kwekhadi ngephutha, noma ukulimala kwendawo lapho yehliswa.
Isixhumi se-GPIO sikhulile: kusuka kumaphini angama-26 kuye kwangama-40. Izikhonkwane ezingu-9 zingezengezo/imiphumela yazo yonke indawo. Kuyathakazelisa ukuthi izikhonkwane ezimbili ezengeziwe ibhasi le-i2c eligcinelwe inkumbulo ye-EEPROM. Inkumbulo ngeyokugcina ukulungiselelwa kwembobo noma izishayeli ze-Linux. Yebo, kuFlash kuzothatha isikhathi (mhlawumbe kuze kube ngu-2017 ngenguqulo 2.0?).
Izimbobo ezengeziwe ze-GPIO zizoba usizo. Ngakolunye uhlangothi, ezinye izesekeli ezidizayinelwe isixhumi sephinikhodi esingu-2×13 zingase zingasakwazi ukulingana nesixhumi esingu-2×20.
Ipuleti elisha liphinde libe nezimbobo ezi-4 ezifakwayo ezivuleke kalula kakhulu kunalezi ezimbili ezisenguqulo B. Lokhu kuzothuthukisa ukuzinza kwemishini yemiklamo esekelwe ku-RPi.
Ezinye izinguquko zibandakanya ukuhlanganiswa kwejekhi yomsindo we-analog ibe isixhumi esisha esiyinhlanganisela samaphini angu-4. Ukuxhuma ijekhi yomsindo engu-3,5 mm kuyo kuzokuvumela ukuthi ulalele umculo ngama-headphone noma izipikha zangaphandle.
Isikhala esilondolozwe ngale ndlela senza kwaba nokwenzeka ukuhlela kabusha ibhodi ukuze kungabikho amapulaki aphumile ezinhlangothini zalo ezimbili. Njengangaphambili, i-USB ne-Ethernet ziqoqwe emaphethelweni afanayo. Ukunikezwa kwamandla, i-HDMI, okuphumayo okuhlanganisiwe komsindo nevidiyo kanye nepulaki yamandla kuhanjiswe kwesibili - ngaphambilini "kwahlakazeka" kwezinye izinhlangothi ezi-3. Lokhu akugcini nje ngokujabulisa ubuhle, kodwa futhi kuyasebenza - i-RPi ngeke isafana nesisulu sewebhu yezintambo. Okubi ukuthi uzodinga ukuthola izindlu ezintsha.
Ukunikezwa kwamandla okusha okukhulunywe ngenhla kuzonciphisa ukusetshenziswa kwamandla cishe ngo-150 mA. Isekhethi yokunikeza amandla eyengeziwe yemojuli yomsindo kufanele ithuthukise kakhulu umsindo (yehlise inani lomsindo).
Sengiphetha: izinguquko azizona izinguquko, kodwa zenza isiphakamiso se-Raspberry Foundation sikhange nakakhulu. Ukuhlolwa nencazelo enemininingwane eyengeziwe yemodeli ye-B+ kuzotholakala maduzane. Futhi kumagazini ka-August singathola owokuqala ochungechungeni lwemibhalo ezokuvumela ukuthi uzulazule kangcono emhlabeni "obomvu".
Ngokusekelwe ku:
(isithombe sokuqala)
