Arduino 各种模块篇 震动模块 vibrator module

The vibrator I got works at the voltage ranging from 3.3V ~ 5.5V

I want to make it vibrate variably.

So I planned to test in 2 different ways.

1) analog valtage supply

2) PWM full valtage supply

Here's the test situations and codes

1) analog valtage supply

int vibratorPin=A1; // vibrator on A1
int i=0;
void setup()
{
  Serial.begin(9600);
  //pinMode(vibratorPin,OUTPUT);
  pinMode(10,OUTPUT); // Full valtage Pin
  digitalWrite(10,HIGH);
}
void loop()
{
  for(i=0; i < 256; i=i+1)
  //Acutally the vibrator works from on i = 130
  //analog doesn't work so ideally
  {
    analogWrite(vibratorPin,i); // analogRead values go from 0 to 1023, analogWrite values from 0 to 255
    Serial.print("vibration value");
    Serial.print("	");
    Serial.println(i);
    delay(50);
  }
  i=0;
}

--analysis : only when "i" goes up more than 130 , the vibrator begins to work.

Also not very different from if just give it full voltage supply. ( digital Pin 10 as a control experiment here )

2) PWM full voltage supply

int vibratorPin=9; // vibrator on Pin 9
int i=0;
void setup()
{
  Serial.begin(9600);
  pinMode(vibratorPin,OUTPUT);
  pinMode(10,OUTPUT); // Full valtage Pin
  digitalWrite(10,HIGH);
}
void loop()
{
  for(i=0; i < 256; i++)
  //Acutally the vibrator works from on i = 130
  //analog doesn't work so ideally
  {
    digitalWrite(vibratorPin,i); // analogRead values go from 0 to 1023, analogWrite values from 0 to 255
    Serial.print("vibration value");
    Serial.print("	");
    Serial.println(i);
    delay(50);
  }
  i=0;
}

--effect analysis:

Initially when variable "i" ranges from 0 to 100, I can feel the module vibrates dynamically clearly. But after "i" goes up to more than 100, I feel it all the same, which means "100" is no different from "200" for this instance.

So I re-code it.

int vibratorPin=9; // vibrator on Pin 9
int i=0;
void setup()
{
  Serial.begin(9600);
  pinMode(vibratorPin,OUTPUT);
  pinMode(10,OUTPUT); // Full valtage Pin
  digitalWrite(10,HIGH);
}
void loop()
{
  for(i=0; i < 5; i=i+1) // Here is the part i changed , but still not different from previous one
  //Acutally the vibrator works from on i = 130
  //analog doesn't work so ideally
  {
    digitalWrite(vibratorPin,i); // analogRead values go from 0 to 1023, analogWrite values from 0 to 255
    Serial.print("vibration value");
    Serial.print("	");
    Serial.println(i);
    delay(500);
  }
  i=0;
}

#############

Summery:

Above all, so for  this vibrator module, please don't think to use it like a vibrator variably.

Buy a digital one! Haha! Gonna get one!