Arduino ADK Mega vs. Arduino Leonardo

Other Hardware Motors, Mechanics, Power and CNC
1

Hello Guys!
My first post on this Forum!

OK Guys Check this out i need ya really help maybe it was allready discussed but i dont know what to do:

Ive got a Project where i Controll a Servomotor directly connected to a µC.

At first i used the ATmega2560 with an XbeeShield and a bluetooth module. I wrote the Code Connected everything and tested it, it worked. The Servo is moving to the Positions i decide.

Now im putting the same Code on an Leonardo with a bluetooth module. The Servo cant reach any of my positons!!

I dont know what to do i tried on the Leonardo following pins 9,11,3;

Please help me fast :slight_smile: thank you Machete

2

Now im putting the same Code

, which, rather inconsiderately, you didn't post.

3

Here the code:

#include <Servo.h>

#define step_1 10
#define step_2 20
#define step_3 30
#define step_4 40
#define step_5 50
#define step_6 60
#define step_7 70
#define step_8 80
#define step_9 90



Servo myservo; //create servo object

int pos = 90;
int pos_A = 165;
int pos_E = 0;
double scale = 0;
int menu_pos = 0;
char input;


void setup(){
  Serial.begin(9600);
  pinMode(led, OUTPUT);   

myservo.attach(3); // attaches the servo on pin 9 to the servo object

  myservo.write(pos); //moving servo to init pos (90)
  delay(10);  //time to move for servo 10 ms

  scale = (165 - 0)/100;

  myservo.write(pos_A); //moving servo to init pos (90)
  delay(100);  //time to move for servo 10 ms


}


void loop(){
  if (Serial.available()){
    input = Serial.read();
    switch (input){

    case 'A': //Go to pos_A
      myservo.write(pos_A); //moving servo to init pos (90)
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;

    case 'E': //Go to pos_E
      myservo.write(pos_E); //moving servo to init pos (90)
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;


    case '9':
      menu_pos = (scale * step_1); //Opening 10%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;


    case '8':
      menu_pos = (scale * step_2); //Opening 20%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;


    case '7':
      menu_pos = (scale *step_3); //Opening 30%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;


    case '6':
      menu_pos = (scale *step_4); //Opening 40%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;


    case '5':
      menu_pos = (scale *step_5); //Opening 50%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;

    case '4':
      menu_pos = (scale *step_6); //Opening 60%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;

    case '3':
      menu_pos = (scale *step_7); //Opening 70%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;

    case '2':
      menu_pos = (scale *step_8); //Opening 80%
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;

    case '1':
      menu_pos = (scale *step_9); //Opening 90%
      Serial.println(menu_pos,DEC);
      myservo.write(menu_pos); //moving servo to menupos
      delay(50);  //time to move for servo 10 ms
      digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(250);               // wait for a second
      digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
      break;



    }
  }
4

Do you see the LED?

(Your code would benefit from using some simple arrays, which would shorten the code considerably, and make it easier to debug)

5

Yes i see the LED and, the Code is working on the leonardo too, BUT it seems like the Servo is getting to low current or a wrong PWM signal because hes doing wrong positioning

6

For Information this is the hardware i am using:

-Arduino Atmega ADK form DFRobot

and

-Arduino Leonardo with Xbee Shied

Bests, machete

7

Looking again, you may not need arrays (though they would add flexibility), some arithmetic may be all that's needed to shorten the code.

How is all this powered?
You have a separate supply for the servo?

8

Yeah i know i could shorten it...

i am powering with the Arduino's with 6V and 2A.

The Servo is not External powered, its getting his Supply via the Arduino.