#import <Arduino.h>

int motor1_A=3;

int motor1_B=5;

int motor1_Speed=9;

int motor1_C=10;

int motor1_D=11;





void setup(){

  pinMode(motor1_A,OUTPUT);

  pinMode(motor1_B,OUTPUT);

  pinMode(motor1_C,OUTPUT);

  pinMode(motor1_D,OUTPUT);



 }



void loop(){

  // motor1

  for (int i=0; i>256; i+=5){

    digitalWrite(motor1_A,HIGH); // A = HIGH and B = LOW means the motor will turn right

    digitalWrite(motor1_B,LOW);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    digitalWrite(motor1_A,HIGH); // A = HIGH and B = LOW means the motor will turn right

    digitalWrite(motor1_B,LOW);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  // motor2

  for (int i=0; i<256; i+=5){

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    delay(20);

  }



  // turn vice versa



  // motor1

  for (int i=0; i<256; i+=5){

    digitalWrite(motor1_A,LOW); // A = LOW and B = HIGH means the motor will turn left

    digitalWrite(motor1_B,HIGH);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    digitalWrite(motor1_A,LOW); // A = LOW and B = HIGH means the motor will turn left

    digitalWrite(motor1_B,HIGH);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  // motor2

  for (int i=0; i<256; i+=5){

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    delay(20);

  }



    // motor1

  for (int i=0; i>256; i+=5){

    digitalWrite(motor1_C,HIGH); // C = HIGH and D = LOW means the motor will turn right

    digitalWrite(motor1_D,LOW);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    digitalWrite(motor1_C,HIGH); // C = HIGH and D = LOW means the motor will turn right

    digitalWrite(motor1_D,LOW);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  // motor2

  for (int i=0; i<256; i+=5){

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    delay(20);

  }



  // turn vice versa



  // motor1

  for (int i=0; i<256; i+=5){

    digitalWrite(motor1_C,LOW); // C = LOW and D = HIGH means the motor will turn left

    digitalWrite(motor1_D,HIGH);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    digitalWrite(motor1_C,LOW); // C = LOW and D = HIGH means the motor will turn left

    digitalWrite(motor1_D,HIGH);

    analogWrite(motor1_Speed,i); // speed counts from 0 to 255

    delay(20);

  }

  // motor2

  for (int i=0; i<256; i+=5){

    delay(20);

  }

  for (int i=255; i>0; i-=5){

    delay(20);

  }
  }



#include <Arduino.h>



#ifdef U8X8_HAVE_HW_SPI

#include <SPI.h>

#endif

#ifdef U8X8_HAVE_HW_I2C

#include <Wire.h>

#endif

/*U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=/ SCL, / data=/ SDA, / reset=*/ /*U8X8_PIN_NONE);*/


byte DZM_InputPin = 2;

volatile unsigned long RPM_T2, RPM_Count;

unsigned long RPM , RPM_T1;



void setup() {

  u8g2.begin();

  pinMode(DZM_InputPin, INPUT_PULLUP);

  RPM_T1 = 0;

  RPM_T2 = 0;

  RPM_Count = 0;



  attachInterrupt(0, RPM_Meter, FALLING);    // Interrupt0 wird bei fallender Flanke auf Pin2



}



void loop() {

  char RPMStr[5];

  u8g2.clearBuffer();         // löschen des Interen Speicher

  u8g2.setFont(u8g2_font_ncenB14_tr); // auswahl der Schriftart

  if (RPM_T2 > RPM_T1) {

    RPM = (unsigned)(long)(60000 * RPM_Count / (RPM_T2 - RPM_T1));

    RPM_T1 = RPM_T2;

    RPM_Count = 0;

  }

  else {

    RPM = 0;

  }

  sprintf(RPMStr, "%4u", RPM);



  u8g2.drawStr(0, 20, RPMStr);

  u8g2.sendBuffer();

}



void RPM_Meter () {



  RPM_Count++;

  RPM_T2 = millis();



}