Let's Make Robots!

servos

Understanding servos...

Well, I'm trying to learn servos so I'm toying around a micro servo 9G.

I'm using an arduino one board and the following code:

 

#include <Servo.h>

Servo neckServo;            // Define the Servo object

void setup()

{  

  neckServo.attach(10);     // attach the servo on pin 10 to the servo object 

  neckServo.write(90);       // "favorite" default position

}  

 

void loop()

{

neckServo.write(0);

This is my project [DON'T LOOK, JUST BORING]


STARTED 5.7.2012

Okay, so here's my project, what i am designing.
It is a robot arm!
Some stats:

- 4 servos, not very big
- PICAXE 14M as brain
- SM-S3317S 2.0kg at 4.8V
- 4 Rechargeable 1.2V batteries
- Polymorph and lightweight woodsticks as materials 
- Maybe somekind of sensor and IR receiver
- Potentiometer to control

Pictures coming soon!

ButlerBot

This is my design for my new project: my ButlerBot

It's going to have a table where it can pick things and pour drinks into a cup or something.

I'am stil working on the last details of the design.

More info soon....

There's a science fiction novel I have, (About a robot of course.) Where a secondary character attempts to use some time management software to schedule a minor … Read more

RC aircraft model

Well After a year joining LMR..

I have finally starded to work on the real reason to join LMR...

Make a RC aircraft...

I have got all the materials and dont tell me about the materials/requirements for that...

 

Just please suggest me designs.. for it... I had few designs in mind but after surfin the net and knowing there are so lots and loads of designs to make, I got confused..

 

I am using dapron.

I want designs.. not any part of electronics... 

Arduino Mega controlled Hexapod robot with 9g Servos
      I have seen quite a lot of Hexapod robots on the internet with high torque servos with ATOM processors, but not the amazing Arduino with 9g servos, so I … Read more
radio controled robot with arm
Using a
My first robot MPU AtMega169(Butterfly dev kit) every information is attached in the uploaded files including source code 6 servos, 2 DC moters, radio modem(RS-232) … Read more

Different buttons for different loops, building wired control

Hi everyone.
Im new into this arduino programing and i totaly love it!
Im building a realy simple 3 servo hexapod walker. All the building is completed and im able to program it to do different thing for example walk forward, or turn.

Robotic Arm with Voice Recognition
Robotic Arm with big servos, at least 2 of them. It will have voice recognition and also can be controlled with a nunchuck. In 1 week I will continue to work on it. … Read more

How Much Voltage Should I Use

I'm working on a small robot that will be using 2 continuous rotation servos that each require 6v to operate. Now my question is should I hook both up to a single 6v power source OR hook both up to a 12v power source OR hook each servo to its own 6v power source? Hope someone can help me, thanks!

Li-ion 7.4v and servos

Hello,
At this time, I make a humanoid robot. This one: http://letsmakerobots.com/node/27414 and now it's time to use battery power.

Autonomous Robot Obstacle Deviance via ultrasound
Using a
MICBot is an autonomous robot for obstacles detection and deviance and goes around, it works indoor or outdoor. Therefore, this solution uses the ultrasonic sensor … Read more

Servos energy (Robotic Arm)

Update:

Well, now that I have time for this robot I've discovered that the SSC32 supports at maximum 9 volts and my PSU is 12 volts. The website for robotshop says 6v to 12 volts but the documentation says 7.2v. Help me please

Cheers

▬▬▬▬▬

Hi, I'm working on a robotic arm, but I don't know what power source purchase. My servos are the problem:

   This is my Tic-Tac-Toe playing robot controlled by a Picaxe 08M . It plays a perfect game as long as it goes first and it always goes first . It is a work in … Read more
Hi, I started with a clone from OddBots Chopsticks spider robot. I have used 8x12Kg servos and 16x6,2Kg Servos from TowerPro Servos I also buyed the spider … Read more

Problems with object tracking using a Dagu compound eye and pan tilt set up.

  Currently I am having problems with object tracking.  My current set up is a Dagu compound eye on a Dagu pan/tilt braket with 2 micro servos in it for turning.  All of that is hooked up to a picaxe 28x1 board correctly, but I run into my problem with my code.  My code kinda worked but was really jerky and will still move when there is nothing there.  Also sometimes it will go like it has a mind of its own.  I thought it was moving when there was nothing there because I made it read the two eyes on opposite sides and jus

Dead Servo?

I was working on my first robot and it looks like my servo just died.  One works and one doesn't when I swap the two, the "dead" one doesnt work with the "good" hookup.  Are servos that delicate?  Its a GWS continuous rotation servo.  Was working fine, then ran for a while with a wierd ground, then nothing.

 

Thanks for any suggestions.

Controls more servos than you can fit on one robot :p
Using a
This tip/walkthrough will work with all Arduino Mega PCBs and their clones. I have found the instructions for the servo command to be a little vague so in this tip … Read more
Haven't touched the dusted Mindstorm NXT at corner for long time I decide to combine it with lots of parts salvage from friends for 4 leg walker. The leg idea … Read more

What causes servo "jitter" and how can I cure it?

Edit    Sorry, should have read this first.

http://letsmakerobots.com/node/3541

Not sure I'll be able to implement fritsl's solution, though.

 

I have a humanoid robot, which has 16 original servos, plus I have added 2 standard servos in claws, and recently 2 more micro servos for the head.

These 2 micro servos occasionally get a bad case of the "jitters", not all the time, but intermittently.

Holonomic move, remote controlled with a RC transmitter.
Using a
This is a hexapod robot based on OpenSCB, an open source servo controller. All code and schematics will be provided under an open source license. It's still a work … Read more

Wired Control with Buttons and Analog stick for Mini Arm

ok. Im trying to build a minature arm to lift and move small things. Ive got it built with 4 servos connected to a picaxe 28X project board but i really have no idea as to how i am going to control it. Ive bought a couple of playstation analog sticks which i want to use to control the robot but i do not know how to connect or encode them.

So can anyone make a suggestion as to how i would go about this. thanks

control 2 motors with arduino motor shield

Hey guys I have a arduino motor shield from adafruit and I want a code for it so that i can control two motors from it. So please could you post a code for it. Also could you tell me that can I connect 2 servos and 2 motors on the shield at one time without having any problem.

Thanks for your help.

TLC5940 anyone?

Allthough these chips are actually called LED drivers they are apparently capable of controlling servos...up to 16 of them :) There is even an Arduino library available for doing so. Pretty cool stuff. But I was wondering if anyone has any experiences with this? If yes then I'd like to know more about it. If not well then consider this a tip to keep in mind the next time you run out of servo pins ;)

Encoders for servo mounted wheels

Picture_004.jpg
 
 
I have 2 questions, 
 
- First, when using a C-stamp (programmed using MPlab) is it possible to track the movement of a continus rotating servo so that I dont need to add encoders to know how  much the wheel has turned?  
 
This is an example of coding that makes 2 servos turn(if it helps):
 
void goforth(BYTE lp, BYTE rp, WORD t)
{
  WORD i;

Microservos from DAGU?

I was just wondering..does anyone have experiences with the 8g microservos from DAGU? I'm talking about item 19 in the PDF found on this page. How do they perform compared to other generic servos of similar size like HXT900 or TowerPro SG90?

can i still add a laser, speaker, led?

in my robot SC-QR-1 i have allready used all 8 servo-ports.

but can i still ad a laser(to see where it looks), a speaker(for it to call hor help or showing some sound-emotions..   etc.) and some leds(like a red to show power, white/bright to help my "primary-back-mounted-not-night-vision-spy-camera") 

and if yes would the servos disturb the lasers, speaker and leds?

and i was also thinking, stuff like the sharp ir sensors have ir leds in them, could i attach an led or laser to those pins??

 

please reply!! :D

Wanting to hook up batteries to 3 servos

I want to hook up 3 servos to some batteries.  Since it show it operate at 4.8v and 6v, that mean I need 6v to get the most out of one.  Does that also mean I just need 6v for altogether to make them all move.  They will all be moving at the same time.  I figure I would need more V then that but maybe it would have to do with mah.  Could someone explain how it able to all three use the same power source.  Also does having more mah mean the battery last longer or make it stronger??? thanks in advance.

Servo Advice

Hello LMRers,

I've never used Servo's nor microcontrollers in any of my robot projects, always computers, dc continuous or steppers motors, and solenoids!

So, last Christmas Santa gave me an Arduino Duemilanove (I love Santa).

Now, I'd like to get some steppers.

I was wondering general advice, shops, prices, and other considerations of my nerdy bretherin 

This seemed like pretty good prices .. http://www.hobbypartz.com/servos.html