Servo and Two blinking LEDs...

Other Hardware General Electronics
1

I tried combining the two basic sketches and I'm not if sure if it's a problem of power or that I need a transistor (or something else?), but while the LEDs do blink, the servo doesn't work. Thoughts?

// Controlling a servo position using a potentiometer (variable resistor)
// by Michal Rinott http://people.interaction-ivrea.it/m.rinott

#include <Servo.h>
#define LED 13 // LED connext to
// digital pin 13

Servo myservo; // create servo object to control a servo

int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin

void setup()
{
myservo.attach(9); // attaches the servo on pin 9 to the servo object
pinMode(LED, OUTPUT); // sets the digital
// pin as output
}

void loop()
{
val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 179); // scale it to use it with the servo (value between 0 and 180)
myservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there
digitalWrite(LED, HIGH); //turns the LED on
delay(1000); //waits for a second
digitalWrite(LED, LOW); //turns LED off
delay(1000); //waits a second
}

2

Add some "Serial.println(val);"...

3

Add some "Serial.println(val);"...

...and some code tags

4

I want to know how he made one post and got karma for it.... (sock puppets?)

5

Is servo power connected to the arduino? If so then you should realize you are controlling a servos with just 500ma.. Connect it to an external power so an try things.

6

Thanks everyone for the fast response. I'll try adding power to see if that fixes it, I'm ultimately hoping to use a 9v battery as I need it to be portable. I'll make sure to add code tags for future posts. Cheers.

7

Reposting the code.

// Controlling a servo position using a potentiometer (variable resistor)
// by Michal Rinott http://people.interaction-ivrea.it/m.rinott

#include <Servo.h>
#define LED 13 // LED connext to
// digital pin 13

Servo myservo; // create servo object to control a servo

int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin

void setup()
{
myservo.attach(9); // attaches the servo on pin 9 to the servo object
pinMode(LED, OUTPUT); // sets the digital
// pin as output
}

void loop()
{
val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 179); // scale it to use it with the servo (value between 0 and 180)
myservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there
digitalWrite(LED, HIGH); //turns the LED on
delay(1000); //waits for a second
digitalWrite(LED, LOW); //turns LED off
delay(1000); //waits a second
}

8

Here's my attempt at adding code tags. Hope it works.

Close. Very close.