2017年2月14日 星期二

Led Blinking in Raspberry Pi 3 with Scratch 在樹莓派3用Scratch實作Led燈的閃爍

需要什麼材料:
What you need:

  • LED x 1 (LED x 1)
  • 220 ohm resistor x 1 (200歐姆電阻 x 1)
  • Breadboard 300 holes x 1 (300孔麵包板 x 1)
  • Male-to-female jumper x 2 (公對母杜邦線 x 2)


步驟一:(若是使用 NOOBS v2.1.0版本的話,可略過此步驟)
Step 1: (You can skip this step if you are using NOOBS v2.1.0 or above)

更新Raspbian系統
Updating Raspbian OS
sudo apt-get update
sudo apt-get dist-upgrade

步驟二:從選單-->軟體開發-->Scratch,來開啟 Scratch 1.4 (Linux),之後在Scratch中點選編輯-->Start GPIO server
Step 2: Open Scratch by clicking on Menu --> Programming --> Scratch. Then, click on Edit --> Start GPIO server.

步驟三:接線
Step 3: The circuit.

Led 正極接 RPI3 的 GPIO17 ( Led anode --> RPI3 GPIO17 )
Led 負極接 RPI3 的 GND ( Led cathode --> RPI3 GND)

樹莓派的針腳說明:
Pin Mapping for Raspberry Pi 3:

步驟四:使用廣播積木來設定GPIO17的on與off,訊息分別為 config17outputgpio17ongpio17off
Step 4: Using broadcast block to configure GPIO17 and the messages are config17outputgpio17ongpio17off.



示範影片:
Demo video:

參考資料:
Reference:
[1] https://www.raspberrypi.org/learning/robot-antenna/