簡易電路單元一：LED亮度(Control a LED lightness without Arduino)
此單元要介紹如何設計控制一顆LED亮度的電路。
This tutorial will design a circuit that can change a LED lightness.
This tutorial will design a circuit that can change a LED lightness.
硬體材料(Materials)：
1. LED燈 x 1
2. B10K variable resistor可變電阻 x 1
3. 160孔麵包板 small breadboard x 1
4. 電池 battery(本例用12V電池 12V in this tutorial)
5. 單節電池盒 battery holder (本例用12V電池盒 12V battery holder in this tutorial)
硬體電路(Circuit)：
完成圖(The finished circuit)：
示範影片(Demo video)：
延伸練習(Practice)：
- 使用開關控制LED燈的亮滅，無亮度調整 (Use a button to turn on/off a LED)。
- 多幾顆不一樣顏色的LED燈 (Try multiple LEDs with different colors)。
- 換成三色(RGB)LED燈 ( Change to a RGB LED )。
- 用一些東西將LED燈蓋住，例如塑膠袋、棉花、壓克力、彩色塑膠片等，看看會有什麼效果。 (Cover the LED with different objects. For example, plastic bags, cottons, acrylic box, etc.)
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