Let's Make Robots!
Read RFID tags and Smart Cards with this handheld device
A Basic Stamp 2px powered handheld device that can read RFID tags and Smart Cards then displays the data on an LCD screen. Future upgrades will include the ability … Read more
Caprolactone Thermoplastic - tonguetwisting mouthful of chemicalness. But this stuff is cool! You have to heat it up to work with it. Paradoxically, it still very … Read more
Price: $14.95 USD

 Collected by one member
This air pump really blows! This pump operates at 12V and has enough power for most small projects. Read more

Control Servos With PC.

Hello. I understand that this is a very broad question, and I have been looking into options but am confused as people tend to start getting quite technical with their answers rather quickly.

I am very very new to robotics, and would like to learn how to control servo motors via a PC, as in how to rotate the motor to different degrees around its axis. Ideally I am after a way that can control many servos at once.

Creating a Microcontroller from Scratch

So i want to make a basic first robot and i understand what to do with an already built microcontroller but as a challenge i actually want to build a microcontroller from SCRATCH.

Yes i understand that it's a tough thing to start off with but my plan is to understand how everything works by actually doing it. I'm currently working towards an electrical engineering degree so i know basic terminology or i can look up anything new.

08M2 had attitude problem; discipline applied, now behaving nominally :D

So this is for the hexaspider project I'm working on. Here's a rough timeline:

Follow Light Stop in front of Object
Using a
This is a light follower robot that stops in front of objects. Its made from a Microbot from Picaxe. Code:   symbol left = b9 symbol right = b7 symbol difference … Read more

Hackerspace and other things

I have been away for a while again :(.  But right now I am sitting at my desk sick as a dog.  I felt I should take this time to update my LMR.  I haven't been able to post my current projects on this site because of this.  Saskatoon TechWorks, a new hackerspace community that has been established.  This means that I will be able to share my knowledge and tools with other like minded individuals.  As an added bonus, I get to use awesome tools as well.

Tamyia tracks

Hello, I have a tank bot project using tamyia tracks. Is it possible to attach them directly to servos? is a gear box existing for servo/tamyia tracks? I don't have any motors and motor controller. Or do you know any cheap tracks compatible with servos?

Thanks for all reply.

Hi,   This is my first attempt at building a robot that will avoid obstacles. To begin with Picle has already had one major revision including a chassis change, … Read more

Dagu 4 channel motor driver fried

Hi,

I have fried my 4 channel motor driver and don't know how this can happpen. As you can see in the picture the Dual FET IC  U10 for motor 4 is blown away. This happened during a first test of my IOIO-SHR v2 robot. Before connecting the motor driver the program has been tested with an oscilloscope, all Outputs are working as expected. All connections has been double checked. Power supply testet with an voltmeter. Each PWM pin can be controlled from the Android phone with a Slider of my test app. PWM frequency was 1kHz.

When do I need to care about quadrature?

Could someone give me examples of where they are using information from quadrature encoders on a motor?

I am setting up a Rover 5 and am not sure why I would connect the quadrature pins (at the moment at least).  From my reading it seems that you use quadrature to determine: speed of rotation and direction of rotation (and possibly orientation of the shaft/distance travelled?)  Is there more to it that I'm missing?

Thanks

B

Homemade Filter Fan Distraction

Introduction

I was crusing YouTube and saw a few videos on these homemade filter fans from Altoid tins.  I don't have a fan system since I usually just do my building on the kitchen bar area, so I thought this would be a good idea to build.  After watching these videos and finding out that it was some article in Make magazine, I breadboarded the circuit and wrote down the diagram for the project.

The Filter Box

Why would you buy anything from Sparkfun?

Just to be able to serve you better in future LMR shop, I'd like to get any random thoughts'n inputs to why you might shop at Sparkfun instead of the LMR shop we are building?

Please don't hold back - we need to know where the sore points are, thanks :)