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Rasberry Pi 2 Avant tout le RaspBerry Pi est un nano ordinateur mais il a tout d’un grand !

La carte Raspberry Pi représente une excellente plate-forme électronique de découverte des systèmes Linux embarqués, car elle propose des interfaces d’entrées-sorties nombreuses pour un coût relativement réduit.

Le Raspberry Pi, est un ordinateur qui s’exé­cute sous le système d’exploitation Linux.

Il possède deux ports USB auxquels vous pouvez raccorder un clavier et une souris, et une sortie vidéo HDMI (High-­Definition Multimedia Inter­face) à laquelle vous pouvez  connecter un téléviseur ou un moniteur. Denombreux moniteurs ne possèdent qu’un connecteur VGA et le
Raspberry Pi ne fonctionnera pas avec ce type de sortie. En revanche, si votre  moniteur a un connecteur DVI, il existe des adaptateurs HDMI-DVI bon marché.

On peut pratiquement faire avec un Raspberry Pi tout ce que l’on peut faire avec un ordinateur de bureau sous Linux, à quelques exceptions près. Le Raspberry Pi utilise une carte SD à la place d’un disque dur, bien que l’on puisse le brancher à un disque dur USB. On peut modifier des documents bureautiques, surfer surInternet, et jouer à des jeux. Le prix bas du Raspberry Pi le destine particulièrement à être utilisé comme media center. Il peut lire des vidéos et on peut l’alimenter à partir du port USB que l’on trouve sur de nombreux téléviseurs.

Caractéristiques (Model Pi 2) 

  • Processeur Broadcom BCM2836 Arm7 Quad Core
  • Horloge du processeur 900MHz
  • 1 Go de RAM
  • 40pin GPIO
  • 4 x 2 ports USB
  • 4 pôles de sortie stéréo et port vidéo composite
  • Port HDMI
  • Port d’appareil photo CSI pour connecter l’appareil photo avec Raspberry Pi
  • Port d’affichage DSI pour connecter l’écran tactile avec Raspberry Pi
  • Port Micro SD pour le chargement de votre système d’exploitation et le stockage de données
  • Source d’alimentation Micro USB
  • Ethernet port 1 x 10/100

Caractéristiques (Model A) 

  • Processeur : ARM1176JZF-S (ARMv6) 700 MHz Broadcom 28351(dispose d’un décodeur Broadcam VideoCore IV,  permettant le décodage H.264 FullHD 1080P et d’un VFPv2 pour le calcul des opérations à virgule) ;
  • RAM : 256 Mo
  • 2 Sorties vidéo : Composite et HDMI
  • 1 Sortie audio stéréo Jack 3 5 mm (sortie son 5.1 sur la prise HDMI)
  • Unité de lecture-écriture de carte mémoire : SDHC / MMC / SDIO
  • 1 Port USB 2.0
  • Prise pour alimentation Micro-USB (consommation : 400 mA + périphériques)
  • Des entrées / sorties supplémentaires sont accessibles directement sur la carte mère via des pins 3v3 55: GPIO,
  • S2C, I2C, SPI
  • API logicielle vidéo : OpenGL : version embarquée OpenGL ES 2.0
  • Décodage vidéo : 1080p30 H.264 high-profile.

Raspberry pi

module wifi raspberry pi

 

 Module Wifi (802.11B/G/N)

Le module Wifi  Tl8192/8188CUS permet à une carte Raspberry pi (A, B, B+ ou 2) de se connecter à internet via Wifi. Le module est équipé d’un port USB qui assure la liaison avec Raspberry pi  et de led d’indication de statut. Connexion facile sur les cartes Raspberry pi. Le module dispose d’une couverture plus de 3 fois de celle de  802.11g !

 

 

 

 Caractéristiques technique :

  • Référence du modèle : Tl8192/8188CUS
  • Poids : 2.17g
  • Réseau standard : IEEE 802.11n (draft), IEEE 802.11g, IEEE 802.11b
  • Interface Host: High speed USB2.0/1.1
  • Débit de données : 802.11n: up to 150Mbps (downlink) and up to 150Mbps (uplink) , 802.11g: 54 / 48 / 36 / 24 / 18/ 12 / 9 / 6 Mbps auto fallback, 802.11b: 11 / 5.5 / 2 / 1 Mbps auto fallback
  • Fréquence de la bande : 2.4GHz ISM (Industrial Scientific Medical) Band
  • Fréquence RF: 2412 ~ 2462 MHz (North America), 2412 ~ 2472 MHz (Europe), 2412 ~ 2484 MHz (Japan)
  • Canal radio : 1 ~ 14 channels (Universal Domain Selection)
  • Couverture : Plus de 3 fois de celle de  802.11g
  • Type d’antenne : Antenne intégrée
  • Puissance de sortie RF : 13 ~17 dBm (Typical)
  • Modulation: 11n: BPSK, QPSK, 16QAM, 64QAM with OFDM, 11g: BPSK, QPSK, 16QAM, 64QAM, OFDM, 11b: DQPSK, DBPSK, DSSS, CCK
  • Sécurité de données : 64/128-bit WEP Encryption WPA, WPA-PSK, WPA2, WPA2-PSK. TKIP/AES
  • Réseau : mode automatique 802.11n ou 802.11g ou 802.11b
  • Media Access Control CSMA/CA with ACK
  • LED Indicateur de réseau /Active ( Blue )
  • Température de fonctionnement 0°C to 40°C
  • Température  stockée -20°C to 75°C
  • Humidité : 10% ~ 90% (Non Condensing)
  • Humidité  stockée : 5% ~ 95% (Non Condensing)
  • Exigences : Port USB 2.0
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