Let's Make Robots!

robot

LMR meeting in Shanghai

We did it again. This time our friend OddBot (Russel) visited Shanghai and we got the chance to meet again, even with his limited time in Shanghai.

So, who is "we"? That's MarkusB (Markus), Taweili (David) and me. You can see Russel, Markus and me on the following picture. David as a photographer is behind the cam (sorry about the quality but this is not David's fault but the cheapy Point-and-Shoot camera ;-)

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!

Allows your robot to control PC applications / display sensor data
Using a
Gobetwino is a free program designed to allow Arduino boards to control PC aplications. Because it reads a serial com port it is not limited to Arduino boards and … Read more

I really like my FEZ Mini Robot.

I am totally ejoying my FEZ Mini Robot! I thought the C# code might be hard for me but I am really starting to like that language. It is a "shift" in ones thinking about writing a good program. Now I am sure I would "mix some things up" if I went back to programming on a Arduino.

No fears mate about the C# code running on the FEZ Mini, it works just fine. The build/deploy/debug procedure works, but it still holds a lot of secrets. (The FEZ Mini board sends back "Rebooting..." like your device is acting like small computer!)

IR navigation beacons

There have been several previous blogs and forums on LMR concerning different methods of robot navigation and room recognition. I have decided to make some IR beacons for experimenting with.

My theory is that if each room has at least 3 beacons spaced around it then the robot can not only triangulate it's position within the room but also determine what angle it is facing. Each beacon sends out a different identification code. This allows the robot to know which room it is in.

Awesome website!

Yes, LMR IS an awesome website, but some may also be interested in one I found.

See: http://www.helloapps.com/index.html  All the files and tutorials for getting into MRDS.

"Microsoft Robotics Develpement Studio" (Covering both versions 3 and 4,)

This website covers all aspects of robot system modeling including mesh design and science.

(I have a book on MRDS, but trust me, this website is easy compared to the book.)

When you get a chance, check it out.

 

 

 

A little robots journey - Epilog

Finally EL2ISA2 aka Artoo is back from his journey. Like in the vaste of the universe he was travelling thousands of lightyears kilometers/miles throught China: Following up the previous travel reports: Tatooine, here and here. Here are some of the pictures and comments of his adventure.

1. EL2ISA2 (Artoo) standing on the Great Wall of China:

Bluetooth and XBEE

Hi, I am working on a project that includes contolling a robot wirelessly though visual basic 2010. And I was researching and found that if you use an xbee it is the same code as when using a usb cord. But i want to use bluetooth instead. And I was wondering if the code is the same when using bluetooth (like the xbee). I assume that it is the same because it is a form of RF. But I need to know from LMR if it is the same code with Bluetooth or is it different.

Thanks,

Robot Teaches Itself How To Walk.

Very interesting work of making a robot learn about itself using gyro feedback and programming in rules based around this.

Looks like it would be a quicker way to program robots to do complex tasks perhaps...

A little robots journey

1. Chinese Great Wall

Artoo, I told you that's a dead end...

Annual Online LMRobo-games!!!

What if somebody makes an annual robo-games for LMR members that is held online? just like Robotgrrl's robot party but with games and stuff e.g. online robot racing, online robot chess games(for those who do have chess playing robots, and connect them o the internet and play with other people), robot catwalk, coolest robot of the year...etc. and the prizes would be certificates that can be sent and print by the winner, or stuff that i don't know.

so, anyone interested in this kind of concept?

An ATmega328 and L293D based variable speed and direction motor controller
NTRODUCTIONThe GOduino II is a self-contained Read more
Sings, recognizes faces, recognizes speech
Using a
I've been building Robot Betty9 for about 10 years. She has an Arduino, a Basic Stamp, A Vex for her power rollerskates, and uses an EZ Robot board for AI, and face … Read more

Robot Betty9 is ALIVE

My robot betty9 is really cool. I built her over several years. She sings at the Riverside Robot Expo.Robot Betty9 - humanoid

RC lawnmower for cut the grass from my android phone !
Using a
Hi everybody, First i present myself, so i am a 19 years old boy from france, i am actually studing at the university in tours ! I like technologics hackings and i … Read more
Grabs, holds, drops, point finger...
Using a
Here is "InMoov", the robot you can print and animate. You have a 3D printer, some building skills, This project is for you!! This is a hand builded for a job … Read more
Balance to one leg, move hand, move head with Power Led on
Using a
Hello everybody,I am back one year later, with my latest construction Red Dragon biped robot http://letsmakerobots.com/node/27414. After my second construction, … Read more

Micro Magician robot controller - I can finally tick the project complete box!

I started designing this controller in December 2011. After 4 months and 2 previous revisions it will finally be shipping out April 2012. I think this is DAGU's best Arduino compatible robot controller yet!

Designed for small robots using small batteries, the Micro Magician is a 3.3V controller running at 8MHz.
Working from 4.5V to 9V means this constroller can run from a single LiPo cell or 3x NiMh batteries.
Reverse polarity protection means no blue smoke if you get your power wires crossed (reverse polarity diode rated at 3A).

TITAN robot

This project is HUGE. Lets start form the begining, I am a university student and for my final project I wanted to do a big robot, that is untill I found out that the university picks a group of projects and you choose one, so I've decided to make it anyway. 

UPDATE: New post has me controlling servos with my arms!!! check it out at my blog

Gears and gearboxes. What do you want for your robot?

Sometimes when your building a robot you will need gears. Although there are plenty of ready made gearboxes on the market they will not always fit your needs. I have been looking at puting together a collection of gears, shafts and even small bearings so that you can build you own gearboxs.

I started off with the green bevel gears shown below, they have big, strong, chunky teeth that are hard to break. These allow you to have a 90° output.

Wild Thumper goes Wild hunting Lions in Africa!

I heard through the grapevine (amando96, Gareth) that a Wild Thumper Chassis was being used to photograph wild animals!

UGV trainer kit - Unmanned Ground Vehicle

Typically when I hear the words "Unmanned Ground Vehicle", I tend to think of military and off-road vehicles but these days big companies are investing millions of dollars on cars that can drive themselves.

This kit is an affordable beginners kit to help students and hobbyist learn the basics. Using the Arduino compatible Micro Magician robot controller with it's library of basic control functions ensures an easy and fun learning curve.

Little Black Duck - 12g, 2Kg/cm miniature servos from DAGU

Have you ever built a robot and then found your miniature servos were not quite strong enough?
Get yourself a flock of ducks! DAGU's little black ducks!

DAGU are now selling a 2Kg/cm servo that is only slightly taller than a standard miniature servo. The height difference allows for thicker, stronger gears and a bearing to support the load.

Polycarbonate 90° bevel gears with aluminium mounting brackets

When you build robots, sooner or later you will need a 90° bend in a drive shaft. Crown gears are fairly common but the teeth are relatively small and strip easily.

DAGU have now produced some relatively small, polycarbonate bevel gears to help solve your gear train problems. Unlike crown gears, bevel gears have a longer, tapered tooth that is much stronger and harder to strip.

Magnetic servo clutches from DAGU

After years of being frusatrated by stripped gears in my servos I have finally done something about it. DAGU is now producing servo clutches to suit 8g and 9g miniature servos.

Unlike normal servo savers, Dagu servo clutches can be continuously rotated without damage to the clutch or the servo. They look like a servo horn but are a few millimeters thicker. They can be configured for both standard and continuous rotation servos. Here are some common configurations:

Robot position localization using Monte Carlo filter

I am taking Udacity's "Programming a robotic car" free online class and I think it is a great resource for all robot builders! Since the beginning I have seen a lot of question about the way to try algorithms we are learning with real robotic vehicles.

Building a line following robot Need help with programming

 

#define INA_2   10   //This is the left forward control of the robot, I defined each pwm pin that is connected to the arduino

#define INB_2   11   //This is the left backward control of the motor, e.g set this high and INB_1 high and others low you will do a reverse

#define INA_1  5    //This is the right forward control of the motor

#define INB_1  6   //This is the right backward control of the motor

 

 

 

 

Navigate around via infrared
Using a
This is my first robot ever. Read more