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1. Arduino Beginners Tutorial: Arduino Overview and Simple Examples
Arduino is an open-source electronic platform that attracts many users with its easy-to-use software and hardware. It includes a microcontroller, circuit board, and Arduino IDE, the latter allowing programming and control of circuits through a computer. Its original design intention was to enable students without programming backgrounds to quickly develop products. Nowadays, whether they are students, hobbyists, or professionals, they can find applications in the world of Arduino. The appeal of Arduino lies in its easy to get started feature. Affordable prices, such as Arduino boards priced below $50, make it a choice for entry-level users. Its IDE supports cross platform compatibility with Windows, MacOS, and Linux systems, while other platforms may be limited to Windows only. In addition, the programming interface is concise and friendly, making it easy for beginners to get started quickly. Through Tinkercad, we can create a simple Arduino example connected to a potentiometer. Potentiometers control voltage by changing the resistance. Connect the circuit to the A0 interface of Arduino and read the potentiometer signal. The following is the basic code used to measure and print the output voltage of a potentiometer: void setup() {Serial. start (9600);//Start serial communication} void loop() {float sensorValue=analogiRead (A0);//Read A0 interface signal float Vin=5 * sensorValue/1023; //Convert to voltage Serial. println (Vin); //Print voltage value delay (1); //By using this simple example, users can intuitively understand how Arduino detects voltage changes. This is just the tip of the iceberg of Arduinos features, and we will delve deeper i
2. How to use Scratch and Arduino to edit programs to make a car navigate a maze?
/* **************************************************************************************** 1 Arduino Uno//A0 (Analog Input) → Infrared Sensor S (Signal)//A1 (Analog Input) → Infrared Sensor S (Signal)//A2 (Analog Input) → Infrared Sensor S (Signal)//5V (Power Positive) → Infrared Sensor VCC (Power Positive)//5V (Power Positive) → Infrared Sensor VCC (Power Positive)//5V (Power Positive) → Infrared Sensor VCC (Power Positive)//GND (Ground) → Infrared Sensor GND (Ground)//2 Infrared sensor//GND (ground) → Arduino Uno GND (ground)//3 TT DC deceleration motor-1//VCC (positive pole of power supply) → L298N OUT2 (signal)//GND (ground wire) → L298N OUT1 (signal)//4 TT DC deceleration motor-2//VCC (positive pole of power supply) → L298N OUT3 (signal)//GND (ground wire) → L298N OUT4 (signal)//5 1.5Vx3 battery pack//VCC (positive pole of power supply) → L298N 12V (power supply)//GND (ground wire) → L298N GND (ground wire)//6 L298N//IN1 (signal) → Arduino Uno D2 (digital IO)//IN2 (signal) → Arduino Uno D3 (digital IO)//ENA (signal) → Arduino Uno D9 (digital IO)//IN3 (signal) → Arduino Uno D4 (digital IO) -----------------------/L293 motor drive pin (controlling left/right motor) const int IN1=2; //Left motor forward rotation const int IN2=3; //Left motor reverse const int IN3=4; //Right motor forward rotation const int IN4=5; //Right motor reverse const int ENA=9; //Left motor PWM speed regulation (pins supporting PWM) const int ENB=10; //Right motor PWM speed regulation (supports PWM pins)//Infrared sensor pin const int LEFT_SNSOR=A0; //Left sensor const int MID_SNSOR=A1; //The middle se
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