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Lesson 1/1: What is Arduino? Types of Arduino Boards and SunFounder Kit Lesson 2/31: Getting Arduino Software and using Documentation for SunFounder Arduino Kit 第3/31課:項目LED閃爍,咩係麵包板、LED同電阻,用SunFounder套件 Lesson 4/31: What are Binary, Decimal, Hexadecimal and Octal Number, Arduino Serial Monitor Lesson 5/31: Introduction to Arduino Data Types SunFounder Learning Kit Lesson 6/31: Buzzer, Driver Wheel and mini Water Pump using Arduino SunFounder Kit | Robojax Lesson 7/31: Digital Read Push button, detecting magnetic field SunFounder Kit | Robojax Lesson 8/31 : AnalogWrite LED Fade, for loop, while loop and do while loops | SunFounder Robojax Lesson 9/31: Reading Voltage Using Arduino, Potentiometer AnalogRead SunFounder Kit | Robojax Lesson 10/31: Conditional Statement in Arduino and Using Array | SunFounder Robojax Lesson 11/31: What is Arduino library and How to use DHT11 Temperature and Humidity Sensor | SunFounder Lesson 12/31: Using Arduino Programming function and switch | SunFounder Robojax Lesson 13/31: Using XY Joystick with Arduino and turning a buzzer with joystick Motion | Robojax Lesson 14/31: Arduino Millis (no delay) and map functions | SunFounder Robojax Lesson 15/31: Using Soil Moisture Sensor with Arduino SunFounder Kit | Robojax Lesson 16/31: Detecting Obstacle Using Infrared Obstacle Avoidance Sensor using SunFounder Kit Lesson 17/31: How to interrupt a delay in Arduino and Light Dependant Resistor LDR | Robojax Lesson 18/31: Using Servo Motor with Arduino SunFounder's Arduino Kit Lesson 19/31: Measure Distance Using Ultrasonic Sensor with Arduino | SunFounder Robojax Lesson 20/31: Using LCD1602 with Arduino display temperature, voltage and distance | Robojax Lesson 21/31: Using Infrared Remote Control with Arduino | SunFounder Robojax 第22/31課:使用七段顯示器配合Arduino同電子骰仔 | SunFounder Robojax 第23/31課:智能車第一部分:SunFounder智能車組裝及直流電機全橋講解 第24/31課:智能車第二部分:前進、後退、左右轉同控制車速 第25/31課:智能小車-3 使用紅外線感測器避開障礙物 | SunFounder Robojax 第26/31課:智能小車 第4部分:使用超聲波傳感器避障 | SunFounder Robojax 第27/31课:汽车-5 SunFounder智能车使用Arduino跟随你的手 | Robojax 第28/31課:汽車-6 SunFounder自動駕駛Arduino汽車使用 | Robojax 第29/31課:汽車-7 使用遙控器控制SunFounder智能車 | Robojax 第30/31課:SunFounder Arduino套件嘅智能車進行Car-8線追蹤 | Robojax 第31/31课:使用DHT11和ESP01 SunFounder套件通过Wi-Fi测量温度和湿度
Lesson 14/31: Arduino Millis (no delay) and map functions | SunFounder Robojax
Introduction
This lesson teaches two essential Arduino functions: millis() and map(). By the end of this tutorial, you will understand:
How to use millis() to manage timing without stopping program execution.
How to use map() to scale and control values, such as LED brightness or motor speed, based on percentages.
Part 1: Understanding millis()
The millis() function returns the number of milliseconds since the Arduino started running. It's crucial for creating non-blocking code where multiple tasks run simultaneously.
Why Use millis() Instead of delay()?
The delay() function pauses the entire program, preventing other code from running.
millis() lets you perform actions at specific intervals while the rest of your code continues executing.
Example: Blink LED Without delay()