light sensor controling a servo motor

Forum 2005-2010 (read only) Hardware Interfacing
6

i done it a few days ago without knowledge of this post..

It looks like this: Arduino + Cheapservo + ldr = Servo dj - YouTube

The code that i used was a little bit botched.. and it can be easy improved making that to do a high light mesurement and a low light mesurement.. it has been modified so many times thats why there are a lot of variables and is too long :wink:

I'm newbie on programming and it works so i'm happy with the result.

#include <Servo.h>

Servo servo1; 

int valoranalogic;  
int Pinanalogic = 4;   
int marje = 800;
int led = 13;
int marje1;
int marje2;
int marje3;

void setup() {

  pinMode(1,OUTPUT);
  servo1.attach(14);
  servo1.setMaximumPulse(2200);
  pinMode(led, OUTPUT);

digitalWrite(led, HIGH);
delay(1000);                 
digitalWrite(led, LOW);  
delay(200); 
digitalWrite(led, HIGH);
delay(500);                  
digitalWrite(led, LOW);   
delay(500); 
digitalWrite(led, HIGH);
delay(1000);
digitalWrite(led, LOW);   
marje1 = analogRead(Pinanalogic);
delay(100);
marje2 = analogRead(Pinanalogic);
delay(100);
marje3 = analogRead(Pinanalogic);
delay(100);
marje = (marje1 +  marje2 + marje3) / 3;
digitalWrite(led, HIGH);
delay(1000);
digitalWrite(led, LOW);  
} 



void loop() {

  static int angle = 0;
  valoranalogic = analogRead(Pinanalogic);
  angle = (valoranalogic - marje) * 2 ; 
  servo1.write(angle);
  Servo::refresh();

  }

I'm working now in a servo robot arm controlled with arduino..

I doesn't have the final desing decided.. i will be similar as lynxmotion arm.. but with the cheapest servos that i could find, the dynam 34g.