《章節列表》
Chapter 1: Getting started
Chapter 2: Precise camera control
Chapter 3: Time-lapse photography
Chapter 4: High-speed photography
Chapter 5: Control the camera from Python
Chapter 6: Stop-motion and selfies
Chapter 7: Flash photography using an LED
Chapter 8: Make a Minecraft photo booth
Chapter 9: Make a spy camera
Chapter 10: Smart door
Chapter 11: Car Spy Pi
Chapter 12: Build a wildlife camera trap
Chapter 13: Take your camera underwater
Chapter 14: Install a bird box camera
Chapter 15: Live-stream video and stills
Chapter 16: Set up a security camera
Chapter 17: Quick reference
《深入研究》
因為 Zero 系列是單面組件放置,過去 Zero/Zero W 使用 Broadcom BCM2835 SoC (ARM1176JZF-S 單核心),其 SoC 和 SDRAM 使用 package-on-package(PoP)封裝技術,可以將 SDRAM 封裝直接位於 SoC 的頂部,看起來像是這樣。
圖片來源:New product: Raspberry Pi Zero 2 W on sale now at $15
而 Zero 2 W 使用四個 Cortex-A53 核心,因為四核心的處理電路面積會超過原本的大小,無法直接使用原本的 PoP 技術,因此在 Pi 2 以後的樹莓派都是將 SoC 和 SDRAM 分離。
但隨著半導體技術的演進,在 2011 年的 BCM2763 曾使用 system-in-package (SiP)封裝技術(將 128MB SDRAM 和 SoC 晶片直接封裝在一起)又被應用在這次的 Zero 2 W。這次的封裝技術 RP3A0 是新一代的 SiP,可結合 BCM2710A1 晶片和 4Gbit Micron LPDDR2,看起來像是這樣。
圖片來源:New product: Raspberry Pi Zero 2 W on sale now at $15
# add the following line in the end of /boot/config.txt
# control MUTE state is toggled by GPIO22
dtoverlay=iqaudio-dacplus,unmute_amp
dtoverlay=iqaudio-dacplus,auto_mute_amp
The Uni-body Aluminium case protects your Raspberry Pi from damage and also cool as a thermal conduction.
《特色》
【Silent & passive Cooling】 100% Aluminum Alloy material cools the Raspberry Pi as a heat-sink and comes with Silicone thermal pads for CPU, SDRAM and USB chip provides excellent heat dissipation.
【Durable & Quality】Alloy aluminum oxidation greatly improves the corrosion resistance, hardness, wear resistance, insulation, heat resistance of the cooler, and prolongs the service life.
【 High Performance 】 Optional installation for 25/30mm fan provides the best cooling potential to avoid overheating and create the perfect performance for Raspberry Pi4.
【Easy Access】- Aluminum casing with cutouts for GPIO / Camera / DSI display cable. Extra space for Pi POE Hat and Sense Hat. Obvious lights show the system status.
【 WiFi signal strength 】No limitation for WiFi due to Plastic Base; Using ABS UL 94V0 specifications material for flame retardant.
《規格》
AVAILABLE COLOR : Black
MATERIAL : Aluminum (1.5~4mm) , Glassy Acylic (5mm) ,Rubber
DIMENSION : L*W*H=92.05*67.25*39.5 mm / 3.62 x 2.65 x 1.56 inches
【Silent & passive Cooling】 100% Aluminum Alloy material cools the Raspberry Pi as a heatsink and comes with Silicone thermal pads for CPU, SDRAM and USB chip provides excellent heat dissipation.
【 High Performance 】 Optional installation for 25/30mm fan provides the best cooling potential to avoid overheating and create the perfect performance for Pi4. Max 1.28in / 32.5mm internal space with spacers.
【 WiFi signal strength 】No limitation for WiFi due to Plastic Base; Using ABS UL 94V0 specifications material for flame retardance.
【Easy Access】- Aluminum casing with cutouts for GPIO / Camera / DSI display cable. Extra space for Pi POE Hat (Need 4/40 pin extra tall Header) and Sense Hat. Obvious lights show the system status.
【Durable & Quality】Alloy aluminum oxidation greatly improves the corrosion resistance, hardness, wear resistance, insulation, heat resistance of the cooler, and prolongs the service life.
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!