[新聞] 8GB Raspberry Pi 4出來了!


圖片來源:8GB Raspberry Pi 4 on sale now at $75

Pi 4B 從 2019 年發表後,在 2020 年 3 月份有小改版。在 2020/05/28 樹莓派基金會又推出 Pi 4B 的 8G 版本,到底又有哪些改變呢?

《硬體更新》
* 使用 Micron 的 LPDDR4 SDRAM 記憶體 8GB,而 BCM2711 可定址到 16GB。
* 增加新的開關電源(switcher)來取代原本的開關模式電源(Switch Mode Power Supply)。

左圖是原本 Pi4/1GB/2GB/4GB 的電路設計。右圖是 Pi4/8GB 新增的開關電源設計。

有關硬體的差異可以看下圖的比較。上方是 Pi4/1GB/2GB/4GB,下方是 Pi4/8GB 的電路板。

圖片來源:Raspberry Pi 4 Gets 8GB RAM, Raspbian 64-bit (Beta)

《軟體更新》
* 官方版本的 Raspberry Pi OS(原名稱為 Raspbian),不過目前還是 32-bit。
* 可搭配 64-bit 的作業系統,例如 Ubuntu 20.04 LTS 或是 Gentoo
* 持續更新 Vulkan 驅動程式,並且開源

新版本(2020-05-27-raspios)的 Raspberry Pi OS也一併釋出。release notes 如下:

2020-05-27:
  * Added Bookshelf application
  * Added Raspberry Pi Diagnostics application
  * Added magnifier plugin to taskbar - needs magnifier application installed from Recommended Software to enable
  * Added Magnifier application to Recommended Software
  * Added marketing questionnaire as initial Chromium tab
  * Version 0.25 of Scratch 2 included - uses external application to access IMU on SenseHAT
  * Version 1.0.5 of Scratch 3 included - uses external application to access IMU on SenseHAT
  * Version 32.0.0.371 of Flash player included
  * Version 1.0.6 of Node-RED included
  * Version 6.7.1 of VNC Server included
  * Version 6.20.113 of VNC Client included
  * Internal audio outputs enabled as separate ALSA devices
  * MagPi preinstall removed and replaced with Beginner’s Guide
  * MagPi weblink removed from main menu
  * Chromium made default application for PDF files
  * Common icon loading code for lxpanel plugins used
  * Italian translations added
  * Initial move of mouse pointer to menu button disabled
  * Padding at left of menu button removed
  * Focus behaviour changed so that focus moves to desktop if no windows are opened - improves reliability of Orca screen reader
  * Bug fix - focus bug in volume plugin
  * Bug fix - keyboard repeat interval bug in Mouse & Keyboard Settings
  * Bug fix - battery detection bug in battery plugin
  * Bug fix - spurious active areas on taskbar when plugins are hidden
  * Bug fix - occasional crash in file manager on file selection
  * Disk ID is now regenerated on first boot
  * Updated udev rules
    - Remove unused argon rule
    - Add vcsm-cma to video group
    - Add pwm to gpio group
  * i2cprobe: More flexible I2C/SPI alias mapping
  * Raspberry Pi firmware 21e1fe3477ffb708a5736ed61a924fd650031136
  * Linux kernel 4.19.118

《新聞》
* 8GB Raspberry Pi 4 on sale now at $75
* Raspberry Pi 4 Gets 8GB RAM, Raspbian 64-bit (Beta)

* 現貨供應中 ===> 馬上填寫訂購表單!

[產品] Raspberry Pi 3 Model B (現貨)

Raspberry-Pi-3-Model-B
《規格》

SoC: Broadcom BCM2837(已全面升級新版晶片,詳細資料請參考下方連結)
CPU: 1.2 GHz 64-bit quad-core ARM Cortex-A53
GPU: Dual Core VideoCore IV® Multimedia Co-Processor; Open GL ES 2.0; hardware-accelerated OpenVG; 1080p60 H.264 high-profie decode
記憶體: 1GB LPDDR2(和 GPU 共享)
視訊輸出: Composite RCA; HDMI
音訊輸出: 3.5 mm jack; HDMI(1.3 & 1.4)
儲存: microSD
USB: USB 2.0 x 4
Ethernet: 10/100 RJ45
Wireless: 802.11n
Bluetooth: Bluetooth 4.1; Bluetooth Low Energy(BLE)
GPIO: 40-pin 2.54 mm (100 mil) expansion header: 2×20 strip
工作電流: 800 mA
尺寸: 85mm x 56mm x 17mm
重量: 42g

《下載》
* Raspberry Pi 3B v1.2 Schematics
* BCM43438(CYW43438)
* SMSC LAN9514-JZX USB and Ethernet controller
* BCM2837 package change

《新聞》
* [新聞] Raspberry Pi 3 Model B

《相關》
* [產品] Official Model B Pi 3 紅白雙色外殼
* [產品] HDMI 轉 VGA 轉換器(帶音訊)
* [產品] Raspberry Pi 3 Model B + 外殼 + 5V/2A電源組

$ 1600

※若無法使用Paypal購買,請到 這裡 填寫表單購買,造成您的不便敬請見諒。

 

[新聞] Raspberry Pi 3 Model B

根據 CNXSoft 報導,Raspberry Pi 3 Model B 已經出現在 FCC 的網站裡了,表示離開賣也不遠了。更詳細的文件可參考這裡

這次的改變主要是增加了 WiFi 802.11 b/g/n (2.4GHz),Bluetooth 4.0Bluetooth Low Energy (LE),天線位在 microSD 卡插槽旁邊。在 GPIO 腳位旁的兩個孔位可能是用於重置(reset)使用。
Raspberry-Pi_3_vs_Raspberry-Pi_2
圖片來源:Raspberry Pi 3 Model B Board Adds WiFi and Bluetooth Connectivity
而 SoC 部份,記憶體維持 1G,處理器直上 64 位元 1.2GHz 的 ARM 核心(Cortex-A53)。
下圖可看到原來 J5 腳位是給 JTAG 使用,這次已經焊上 connector,還不確定用途。
Raspberry-Pi_3_vs_Raspberry-Pi_2_WiFi_Module
圖片來源:Raspberry Pi 3 Model B Board Adds WiFi and Bluetooth Connectivity
最後,也祝 Raspberry Pi 四週年生日快樂! Matt Timmons-Brown(The Raspberry Pi Guy)剪了一片 Raspberry Pi 歷年的活動與專案,值得一看。

Pi 3B 現貨供應中,馬上購買!

相關新聞:
* Raspberry Pi 3 Model B Board Adds WiFi and Bluetooth Connectivity
* Raspberry Pi 3 – Wireless LAN, Bluetooth, 64-bit, 1.2GHz — From the last page spread of the Essential Sonic Pi issue of MagPi released today
* FOUR YEARS OF PI