Let's Make Robots!

TB6612FNG and my basic stamp 2

I know i have asked this before, but jus for clarification, i wonder if some of you could clear my doubts.

according to robologist, i need to use this coding and connections 


Worlds Smallest Robot? (not mine)

I was just looking at some of the Instructables.. I found one that is pretty badass.. wasn't sure where to put it, so hope this is the right area!

I like what he did, haha talk about ghetto-resourcefulness! 

Small Robot with Picaxe 08


Picaxe LCD Direct Connection Problem

Hey There,

I've hit a snag on a project of mine. I've been trying to build a servo calibrator (to test a servo's limits and test them on robots before they're connected to the motherboard) which should operate by positioning a servo depending on the position of a potentiometer, and display the pulse rate on a 16x2 LCD. I've built one before, with an LED display and a single servo output, but this one should handle two servos.

Except it doesn't. I won't even handle one.  There's two major problems I've found which I'm looking for solutions to.

Movie Editor Recomendations

I have a video recorder that does HD, but the software that comes with it will edit th emovie and change the resolution to 640x480 instead of the original resolution of 1280x720. Anyone have a recomendation for a video editor that is free or fairly cheap that will edit HD vids without changing the resolution and if possible also allow the video to be cropped so it will only show the robot and not everything around it if the video is farther away.

 Windows Movie Editor changes the resolution so that isn't an option. The video editor needs to work in XP or ubuntu.


Need Rechargable Battery

Looking through my sparkfun order yet again, i've realized I really need two things: firstly a rechargable battery 7.2V +, I have no idea how amps work, but i doubt i'll be needing more than 2 (would a 2 amp battery work with 1 amp electronics or fry them?). The main battery would be used to drive auxiliary functions such as motors, servos, and sensors (two GM2's, 1 servo, and 3 IR, 1 ping) The second battery will need to run a RF reciever, LCD screen, and my main board.

5V More Current

I've asked this before, but I have pay-pal cash now... Could someone suggest a cheap. simple (limited extra parts) 5v voltage regulator? I'm coming down from 7.2v so I am not coming down much but I do need at least 2  amps --3 amps would be nice too. I did some digikey searching but they have so many options, I was a bit confused.

Final Question:

I need a digikey part # for a good, limited extra-parts, 5v, 2+amps voltage regulator.

 Thanks  Bunches.

Other electronics (not necessarily robotic)

A place for the discussion TofuRobot brought up regarding other electronic projects. Instead of being lost to the shoutbox nether regions,here's a screenshot of the beginning.


Personally, I think tip/walkthrough would be the right place for stuff that can also apply to robotics. Non-robotics (like the carduino example) would go in a blog.


Japanese geisha robots!

The latest humanoid robots from the land of the rising sun. God help us..


On a side note, I want to see this movie.

Edit: Warning! Danger to young minds! Fake blood and stupidity abounds!

Nike Ad : The runner




(i've read it's a picaxe 08M inside...)

Building Circuit Diagram Software

I have seen quite a few folks on here replying to others with circuit diagrams. My question is what software does everyone use/prefer? I know some use Photoshop or Illustrator. Anything else anyone would reccomend?


smoothing servo movements

Finally I finished zezinho's hardware and now heading to the software. 

When I have it programmed to jump into random poses I would like him to move smoothly instead of quickly jump into another pose.

Someone have any tip to achieve this using Arduino code?

Simple Servo Drive Help.... ie small - light and simple.

What is the simplest processor i can use for driving a single Servo plus   1 input/1 output (digital)

I am talking minimalistic here - ie small - light and simple.

My Plan is to construct a light weight Flight Robot.

It could be i use a servo or maybe a custom linear actuator for steering...

Muscle Wire example is one idea last video (thanks emuller)

How do we vote for the Mr. Basic comp?

How do we vote for the Mr. Basic contest? Is it just with the stars?

Where To Start

I am new to building robots but not new to electroics. i did systems and control at school which is basic, led resistors, transistors, sensors and simple designs like, input process output. I have also done basic circuit board designing but nothing to do with robots.


So my question;

Where is the best place to start making & learning how to create robots.


I am very excited; can't wait

Would anyone be interested in an XMOS challenge?

UPDATE: If you have a YouTube account or use YouTube, add/view our "MyXMOS" channel for latest videos and XMOS news!



The 9.9 version of the XMOS Development Tools is now available:

Problem with my first robot


I have a problem with my first robot following firtsl's tutorial, i've done a robot like the part II of his course and i've put the same code. (http://letsmakerobots.com/node/254). It take sometimes to understand the code but finally i understood it.

You can see in the video that the comportment of the robot is not the one I expected. It seems to reverse the motor to many times and i don't why.

Can I check if my new flashy Futaba s3003 is fair dinkum?

Okay so I got a few new futaba s3003 servos cheapish, and while I'm looking around on other sites to see some prices, I notice that somone left someon else some negative feeback for the servos they bought, claiming that they were not legit futaba servos.

Not knowing a lot about futaba, I'm not entirely sure if I have real futaba servos - at this stage, they were so cheap it hardly matters, but for future reference - how does one spot a fake?

A bit of advice on choosing the right battery


I've been running around past few days trying to figure out a suitable power source for my yet to build robot. It will be powered by two 12V gearmotors (about 1amp stall), on a simple diffrential drive. I am looking for a balance between power consumption and efficiency. My rough estimate is that the robot will weigh under 1kg (2.2lbs) after construction. 

Subsumption Archecture

Hey all I found this very interesting idea in a book (The Robot Builder's Bonanza) for a way to code a robot. Instead of having a robot that merely goes straight till it hits something you have several "levels" or "layers" of code. The first one being an obstacle avoidance sorta thing, and then on the next level an aimless wander. This wander section of code which would ask the obstacle avoidance level if it was OK to move. If it was OK then the random wander would do its magic but if there was an obstacle then the obstacle avoidance would take over like a sort of reflex.

CMU cam 3

Is there anyone familiar programming a CMU cam 3? I was just wondering if we could program the camera using Visual Basic?