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1  Using Arduino / Motors, Mechanics, and Power / Re: Servo-(Vigor VTS-08B) Problem on: February 06, 2014, 02:17:38 pm
First of all thank you for such a quick reply.
 
I will try a higher current rating power supply. Can anyone suggest any from their experience. It would be a lot help. Thank you
2  Using Arduino / Motors, Mechanics, and Power / Servo-(Vigor VTS-08B) Problem on: February 06, 2014, 01:45:46 pm
Hello,

I have a servo Vigor VTS-08B http://www.vigorprecision.com.hk/uploadfile/20120530/20120530173655378.pdf.
I am using the following code to command the servo via serial monitor move to a specific angle.

Code:
/*
  Servo Test Code
  Bascially user inputs no. between 0-180 from the serial monitor
  Arduino turns the servo to that position
 */
#include <Servo.h>
Servo myservo;  // create servo object to control a servo
void setup()
{
  // Begin Serial library
  Serial.begin(9600);
  // attaches the servo on pin 6 to the servo object
  myservo.attach(6); 
}
void loop()
{
  // Whenever there is some data input from serial monitor, i.e whenever user enters a number(position)
  // command arduino to move to the postion
  if(Serial.available())
  {
    // Move the servo to the postion as specified by user
    myservo.write(Serial.parseInt());
    // wait for some time
    delay(1000);
  }
}

Problem is that whenever i enter a number it moves to that angle (also not so accurately) and when it stops it constantly make a noise for a few seconds. And when I enter an angle again less than the previous angle I entered it moves reverse to 180 deg first than goes to the angle entered. Eg. First I move the servo to 135 deg by entering 135 in the serial. It moves to that angle but it still makes a constant sound for a few seconds than stops. And when I enter a smaller angle say 90 deg , ther servo first goes to 180 deg than to 90 deg.
I am using Arduino Uno with an external supply from an AC to DC adapter capable of providing 5.5V and 500mA. And Arduino UNO is being powered via my laptop's USB . No load is attached to Servo motor.

Also I have another motor V3003 (datasheet not available online) . It works perfect and does not give me the above problem. This Servo requires less power than above.  So i think Code works fine.

Please help me. Any more queries are welcome.

Thanks in advance

3  Using Arduino / Microcontrollers / Re: what's inside a micro controller? on: June 26, 2012, 10:59:18 pm
@jack

thnx for directing me what to read first in wikipedia.....i was so confused but now i really have some image of microcontroller and now can understand how can they be so small
4  Using Arduino / Microcontrollers / what's inside a micro controller? on: June 26, 2012, 09:07:39 pm
I wanted to know which components are there in micro controller and how they work and also what work they do in microcontroller  ? please explain or give links that provide the theory regarding it.
please do not explain in too technical language and if u want to use any technical term please explain it. And yes I am just a newbie at electronics.........
THNX a lot. smiley
5  Topics / Robotics / Re: help needed for humanoid on: October 10, 2011, 11:50:07 pm

Quote
Buy servos with dual-ball bearings on the output shafts with metal gears. Sure, it's a lot more expensive up-front to do this; but with a biped and the load (lots of side load) on the shafts, if you don't, your decision to go "cheap" may end up costing you more in the long run than if you had spent the money on the more expensive option in the first place.

IOW - don't be "penny wise and pound foolish".
Thnx for the advise ..... No doubt you are right but unfortunately  my budget will not allow...I live in India where such servo is not easily available moreover if a servo is $10 here they sell for $ 18 and Indian rupees have less value than dollar . And if I buy from other online site like robotshop.com and other the import duties are double of the cost.

I think I should not be needing so much high quality as my robot will weigh 1-2 kg and small in size.
6  Topics / Robotics / Re: help needed for humanoid on: October 10, 2011, 11:02:34 am
How do I find center of gravity
7  Topics / Robotics / help needed for humanoid on: October 10, 2011, 03:15:18 am
Hello there!
I am making a humanoid robot with arduino uno and Android........ I want to ask several question....ie

1how I choose the servo motor I mean how to calculate the torque needed
2) can and how I connect 10 servo to arduino uno and bread board with seperate powersupply
3)any good tutorial on humanoid structure (not biped plzz..ie not only legs)just for reference
8  Using Arduino / Project Guidance / ideas needed on: September 15, 2011, 06:05:44 am
 smiley hey guys suggest me project ideas
9  Topics / Robotics / Re: Help please-robot building on: September 08, 2011, 11:33:01 am
Yes it finds targets and I am planning to shoot marbles or nerf bullets....or any other you can suggest
10  Topics / Robotics / Re: Help please-robot building on: September 08, 2011, 09:44:49 am
Shoot at targets which will be detected by ultrasound sensors

I am making one from scrap but with no success till now
11  Topics / Robotics / Re: Grig & Maze Solving Robot on: September 08, 2011, 08:51:42 am
http://www.robosoftsystems.co.in/roboshop/index.php/robot-kits/nexus-swarm-kit.html
 smiley-cool
Sensor only
 http://www.robosoftsystems.co.in/roboshop/index.php/sensors/grid-solving-sensor-module-digital-output-designed-for-nexus-competitions.html

Gripping module.:
 http://www.robosoftsystems.co.in/roboshop/index.php/mechanical-accessories/meccano-gripper-module-designed-for-nexus.html
12  Topics / Robotics / Help please-robot building on: September 08, 2011, 08:38:20 am
Hello there,
I am an extreme amateur, 1st time builder. I am making a shooter robot and grabber.
My grabbing module is ready ...... But I am not able to make a shooting module.
Any ideas ? smiley-roll-sweat
Thank-you for your concern
Mohit Gupta smiley
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