Introduction to Arduino

F1

2024-2025

Floor 4 - Physic Lab

Mr. Peter

Outline

Arduino Exercises

Arduino Structure

Arduino Programming Blocks

void setup() {

}

void loop() {

}

Arduino Programming Blocks

pinMode( pin, mode )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin)

Mode

INPUT
OUTPUT
INPUT_PULLUP

digitalWrite( pin, signal )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin)

Mode

HIGH or 1
LOW or 0

delay( milliseconds )

Delay Milliseconds

One thousandth of a second
Input parameter 1000 represents a delay of one second

Arduino Programming Blocks

pinMode( pin, mode )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin)

Mode

INPUT
OUTPUT
INPUT_PULLUP

digitalWrite( pin, signal )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin)

Mode

HIGH or 1
LOW or 0

delay( milliseconds )

Delay Milliseconds

One thousandth of a second
Input parameter 1000 represents a delay of one second

Arduino Programming Blocks

pinMode( pin, mode )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin)

Mode

INPUT
OUTPUT
INPUT_PULLUP

digitalWrite( pin, signal )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin)

Mode

HIGH or 1
LOW or 0

delay( milliseconds )

Delay Milliseconds

One thousandth of a second
Input parameter 1000 represents a delay of one second

Arduino - white board

Button Control

digitalRead( pin )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin).

bool ledState = false;

The code above shows how to define a true or false variable in Arduino

delay( milliseconds )

To prevent the code within the `loop()` function from repeatedly executing while a button is held down, a `delay()` function can be implemented after the button press is detected.

Button Control

digitalRead( pin )

Pin Number

0 ~ 19 (14 ~ 19 can be represented as A0 ~ A5)
On Arduino, the pin “~” indicates an analog signal
LED_BUILTIN (Built-in LED Pin).

bool ledState = false;

The code above shows how to define a true or false variable in Arduino

delay( milliseconds )

To prevent the code within the `loop()` function from repeatedly executing while a button is held down, a `delay()` function can be implemented after the button press is detected.

Ex01 - Gradual LED Fade with Button Control using PWM

Controls an LED on pin 5 using PWM (Pulse Width Modulation).
A pushbutton connected to pin 2 is used as input.
When the button is pressed, the LED gradually brightens.
When the button is released, the LED dims down smoothly.
Demonstrates:
- Reading digital input with a pull-up resistor.
- Controlling LED brightness using analogWrite().
- Creating smooth transitions with incremental changes and delays.
Useful for learning basic input/output and analog effects using digital signals.

Ex01 - Gradual LED Fade with Button Control using PWM

Controls an LED on pin 5 using PWM (Pulse Width Modulation).
A pushbutton connected to pin 2 is used as input.
When the button is pressed, the LED gradually brightens.
When the button is released, the LED dims down smoothly.
Demonstrates:
- Reading digital input with a pull-up resistor.
- Controlling LED brightness using analogWrite().
- Creating smooth transitions with incremental changes and delays.
Useful for learning basic input/output and analog effects using digital signals.

Ex02 - Double Press Magic Light

Press the button two times quickly (like a double click).
If you press fast enough:
- The LED turns ON for 2 seconds.
- Then it turns OFF automatically.
Learn how to:
- Use a button to control an LED.
- Detect a double press using simple timing.
- Use delay() and millis() for time control.

Ex02 - Double Press Magic Light

Press the button two times quickly (like a double click).
If you press fast enough:
- The LED turns ON for 2 seconds.
- Then it turns OFF automatically.
Learn how to:
- Use a button to control an LED.
- Detect a double press using simple timing.
- Use delay() and millis() for time control.

Ex03 - Recording and Replaying Button-Driven LED Patterns

Use Button A to control an LED:
- Press and hold to turn the LED on
- Release to turn it off
- Each on/off transition and its timing is recorded
Use Button B to replay the recorded LED pattern:
- The LED turns on and off with the same timing as recorded
Demonstrates:
- Reading digital inputs
- Detecting input transitions (press/release)
- Storing time-based events
- Reproducing time-accurate output behavior
Useful for understanding:
- Event-driven programming
- Timing with millis()
- Input debouncing and real-time feedback

Ex03 - Recording and Replaying Button-Driven LED Patterns

Use Button A to control an LED:
- Press and hold to turn the LED on
- Release to turn it off
- Each on/off transition and its timing is recorded
Use Button B to replay the recorded LED pattern:
- The LED turns on and off with the same timing as recorded
Demonstrates:
- Reading digital inputs
- Detecting input transitions (press/release)
- Storing time-based events
- Reproducing time-accurate output behavior
Useful for understanding:
- Event-driven programming
- Timing with millis()
- Input debouncing and real-time feedback

F1 - Arduino Ex05

By Mr Peter

F1

2024-2025

Mr. Peter

F1 - Arduino Ex05

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