1. One LED powered by Ardunio.

11-1
11-1

2. A parallel crcuit of two LEDs powered by Ardunio and controled by a switch.

3-1

3-23-13-33

3. Add a potentiometer in one circuit.

4-14-1

4-2

4. Add a LED in another circuit to make a series circuit, then parallel the two circuits.

img_7849img_7850

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