Let's Make Robots!

robot arm

What sensors make sense on a simple gripper arm?

I just purchased a dagu MkII gripper,  and am making a 5dof arm for it.  I do not have any experience whatsoever with operating a robotic arm/gripper.   What sensors make sense on this?   I know servo feedback for grip force, but does a gyro or accellerometer make sense?   I can visually see the full range of motion with the Raspberry Pi cam, but would feel better if there was some way to gaurantee "level".... 

 

ganging servos together

I am in the design phase of building a robot arm roughly 40 cm long that can pick up several pounds ( 1 kg for easy math).  To get a 40 kg-cm torque servo is a pretty expensive servo ($60 at pololu.com although anywhere else anyone knows something cheaper, please share!). 

Has anyone ever tried to gang several servos of the same brand and type together to work in concert?  I was going to put a balancing weight on the far end which will help, but still calls for a pretty expensive servo (30 kg-cm)

I need help with picking a controler

I'm making a 6 wheel robot with a 6 degree arm I need some thing that will keep programming with out a computer tethered to it and will run 3 programs at a push of a wireless remote controller for the robot arm. Three different buttons. I have my eye on the wireless ps2 controller. I have 4 years of of schooling but haven't done it in a while so I'm a little rusty. Any ideas?
Hi, this is my test platform for my grade project on the University, since the University have a Lynxmotion rover with the AL5D robotic arm and I've already managed … Read more

Max servo size for picaxe 08m2

Hello i would like to build my first robot using the picaxe 08m2. The servos i have are: two mg945 servos stall torque is 12kgcm (hooked up in parrallel as they will lift the arm up together.) 0ne unbranded servo with the same torque as the above servos for the gripper. The other two are 9g servos that will be used for activating switches. 

Draws light trails in long exposure photographs.
Using a
My heads been buzzing with project ideas lately and one such idea revolves around a light painting (aka light graffiti) robot. Too often I don't follow through with … Read more
Surveillance robot controlled by remote control. autonomous upgrades to follow
What in inspired me to build this machine: I was always fascinated with robots and how they worked. I was further inspired by superdroid robots's wheeled platforms … Read more

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!

Draw numbers of the winners of the LMR Donation
Using a
Introdution: This is my competitor for the LMRv4 Donor Appreciation Robot challenge. Using 5 Dynamixel AX-12+ Servos and an Arduino Mega. Programming has been done … Read more
Hello world! This is my very first robotic project. I made a 5 degrees of freedom manipulator arm completely from scratch. First thing i want to say is that this … Read more

First Robot Plan

I'm about to start my first robot project so i thought i would document my progress, I don't imagine anyone else will be interested so i'm mainly doing this so i have a record.Controller PCB

For a project at Uni I have made a Wireless controller and a motor driver PCBs. They both include a built in arduino and communicate via XBees. I get to keep the PCBs from the project and have bought the ATmega328 chips, XBees and a chassis as these are the parts we had to return.

I plan to use this as a base for my robot and add more features as and when i can.

Operates by voice command
Using a
This is my first Robot ARM controlled by Basic Stamp 2 microcontroller with voice recognition "Say It Module". I used 5 Servo motors 3 large and 2 medium. Say It … Read more
Light wieght Desktop Automation- Intelligent Find Pick and Place
Using a
Humanoid Robot: Human Motion Capture and Replay This is a series of clips showing the development of robotics at DesignFeats We also hope to complete our powerful, … Read more
Pick small things up and put them down
Using a
I had this idea after I studied a tulip on my roof garden. In the morning the blossom opened, in the evening the blossom closed. If I forgot to water it, it let its … Read more
Listen to spoken commands or EMG and move accordingly
Using a
Construction of the arm The arm is made from 2mm ABS sheet. This material is very easy to cut with a carpet knife, can be very well glued with superglue and be … Read more
A complete new update :) Since the old robotic arm was so terrible I decided to spend a pound or two on some acrylic and make robot arm version two, and here it is. … Read more

University Library Robot Phase#1

it is required to build a line tracking robot for the university library. This Robot job is to return back the books to their shelves. in this phase the robot is not expected to bring the books from the shelves also it is not required to put the book in its correct place inside the shelf. it is required to take the book and lay it on its correct shelf then the librarian should put each book in its place.

Each book must have bar-code sticker contains the book ID code (or ISBN code) in the library. Also each shelf must have its bar-code label.

Festo robotic flexible arm

 

Nice flexible robot arm with gripper. No motors only air pressure.

http://www.festo.com/cms/en_corp/9617.htm

When robot programmers get board

Hi all,

I'm new here. I found this on Youtube and thought you might enjoy it.

Engineers Build Ferrari Simulator with Robot Arm

Difference between men and boys = the pricetag of the toys

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

UPDATE - 8. sept. 2010 - first h-bridge and controller board done.--- This is part of my biggest robot project ... It has enough degrees of freedom (5+gripper), … Read more
Navigate around via IR, light off sparklers, fire crackers or do simple chemical experiments
Using a
Update 2010.06.11: New video for those who have birthday today   Ni hao robot builders,  Read more
Picks up things with a robot arm
Using a
    I made this CAD in Google Skechup after I had an epiphany. I thought this would be a really cool idea, and would give me some good experience. Here is how it … Read more
well, it's my first manipulator. ist's nothing special, but it's better than everything i did with this metal contruction box i have. it would be great, when there … Read more