截至 2020 年底，Raspberry Pi 已經銷售了三千七百萬台，並且被廣泛應用在個人創客、學校教學或是量產品上。但如果是想做單純 I/O 功能的應用，就需要考慮使用樹莓派的限制了。因為 Raspberry Pi 的功耗至少是 100 毫瓦(milliwatts)起跳，而且 Raspberry Pi(包括 Zero 系列)都沒有支援類比輸入，而使用 Linux 作業系統更不適合低延遲的場景。
3. 主動散熱，可將熱氣從 USB 和 Ethernet 空隙中帶走。
Raspberry Pi 4 Case Fan 採用下吹式的主動散熱方式，配合紅白外殼的機構，可有效的將熱氣從 USB 和 Ethernet 處抽走，達到絕佳的冷卻效果。
圖片來源：Designing the Raspberry Pi Case Fan
The 33th the Raspberry Pi meetup, the topic is “Raspberry Pi 4 + Ubuntu and Boot Analysis”.
Speaker 1: Taiten(Canonical)
Topic：Snap your application for embedded system
1) Snap and Ubuntu Store for IoT
2) Snap vs Docker
3) Snap your app demo
Speaker 2: StarNight
Topic: A journey to boot Linux on Raspberry Pi
Outline:
I will share several possible boot process of Linux distribution on Raspberry Pi, and the boot process of a Linux distribution with OSTree technology. Take Endless OS booting on Raspberry Pi as an example.
Lightning Talk 1: Alvin(Creative5)
Topic: Running Compal 5G module on Raspberry Pi 4
第三十三次 Raspberry Pi 社群聚會，希望能透過社群活動的分享和交流，找到更多 Raspberry Pi 的可能。本次主題是「Raspberry Pi 4 + Ubuntu 和系統開機分析 」。
分享者1：Taiten(Canonical)
題目：Snap your application for embedded system
1) Snap and Ubuntu Store for IoT
2) Snap vs Docker
3) Snap your app demo
分享者2：StarNight
題目：A journey to boot Linux on Raspberry Pi
大綱：本次將分享幾個 Linux distribution 在 Raspberry Pi 的可能開機過程，以及自己實做一個搭配 OSTree 技術的 Linux distribution 的開機流程。以 Endless OS 在 Raspberry Pi 上開機為例。
透過觀察幾個 Linux distribution 的開機過程，發現 U-Boot 可以做到將開機過程分為「高度硬體相關」與「一般系統皆可通用」的兩大步驟。特別是「一般系統皆可通用」的開機步驟，滿足搭配 OSTree 技術的系統(包含，但不限於)有方便、一致的開機模式需求。更進一步，有機會解決各硬體專屬 Device Tree 的佈署問題。
這次將分享如何實做讓系統在 Raspberry Pi 上開機的過程！
The 32th the Raspberry Pi meetup, the topic is “The applications of Raspberry Pi HAT, part 2”.
Speaker 1: Mikey(Banana Pi)
Topic：How does a AIoT chip start to open source – BPI-EAI80
1) The air-conditioning giant Zhuhai GREE’s open source road
2) Meet GREE Edgeless AIoT-EAI80
3) How BPI-EAI80 works with Raspberry Pi and Arduino
4) Make AI products without understanding AI with BPI-EAI80
5) Demo
Speaker 2: sosorry
Topic: Prototyping with Raspberry Pi HAT
1) The Power Management & UPS HAT
2) The Enviro + Air Quality HAT
3) The NB-IoT HAT
Additional Information:
2020/09/28 19:00 ~ 21:30
2F., No.105, Sec. 1, Chongqing S. Rd., Zhongzheng Dist., Taipei City
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
