User Manual

Lesson 3: Controlling the Speed of the Blink

In the last section, we studied that button only has two states, ON/OFF state corresponding 0V

and 5V, but in practice, we often counter the need for many states, not just 0V and 5V. Then you

need to use Analog Signal! Rotary Potentiometer is a classic example that uses an analog signal.

Background Information:

What is Analog Signal

Analog signals: Signals vary continuously in time and value, and the amplitude, frequency, or

phase of the signal changes continuously at any time, such as the current broadcast sound

signal, or image signal, etc. The analog signal has sine wave and triangle wave and so on. The

analog pins of your microcontroller can have between 0V and 5V is mapped to a range between 0

and 1023 where 1023 is mapped as 5V and 512 is mapped as 2.5v and etc.

Components Involved

1. Seeeduino Lotus

2. Grove LED

3. Grove Rotary Switch

4. Grove Cables(If broken out)

Grove Beginner Kit For Arduino®