Fan speed adjustment experiment

Fan speed adjustment experiment

Experimental phenomena

Use potentiometer to adjust DC motor speed

Theoretical study

Use the learned potentiometer analog value sampling and PWM output experiment, combined with DC motor drive, to achieve the effect of motor speed regulation

Schematic diagram

Code writing

The development board information of the experiment chooses Arduino Leonardo

#define pot A0//电位器引脚对象
int iapin = 6;
int ibpin = 5;
int val = 0;

int potbuffer = 0;//读取数据缓存变量
void setup() {
    
    
  // put your setup code here, to run once:
  pinMode(iapin, OUTPUT);
  pinMode(ibpin, OUTPUT);
  digitalWrite(ibpin,LOW);
}
void loop() {
    
    
  potbuffer = analogRead(pot);
  val = map(potbuffer, 0, 1023, 0, 255);
  analogWrite(iapin, val);
  delay(100);
}