Let's Make Robots!

PLA 3D Printer Filament.

Hey all,

Long time no see. I've been on an adventure starting my own business, Citizen Scientific Workshop. We've just got some air in our wings with new products and such, and one of them is PLA 3D Printer Filament. If you visit my site, you can see all of the pretty colors


Recognizing patterns in accelerometer output

My quadruped spider-like robot is practically blind and deaf, but I did give it one sense that I hope to use to the fullest -- it has an accelerometer on board. Initially it was just to somehow level the robot when it's walking on uneven surfaces, but then I started coming up with all sorts of cool behaviors that I could implement, for example:

Stuff to get rid of

Hey guys I have some stuff that either I have no clue what it is, I dont know how to use it, or just simply dont want to use it. Ill post some pictures and things as I find stuff.


Here is the first thing, It is a bluetooth module I bought off ebay and didnt know it wasnt broken out. If you want it, PM me an offer. :D

How to change the robot direction in Picaxe

Hello everyone ,

                I am new to picaxe , i am making a two and a three whell robot , i am stuck in a problem of rotating the robot body to other directions using picaxe commands . I need some help .

Hair dryer components not dangerous?

I've recycled the nichrome wire/element from a couple hair dryers and hot hair curler station for use in a 3d printer project.  All of the houshd items have an unusual heat proof material supporting the heater wire.  It is very thin,  almost feels like a stiff cardboard, but doesn't have any layers and light can be seen through it. Has a silver, mother-of-pearl type finish.

  It doesn't seem to burn since it holds red hot nichrome wire. I just want to make sure it is not asbestos or something.  Does anyone know what it is?



Simple servo bracket

Birdmun an Hi jinx got me looking into open scad, he is code a bracket for a servo you can adjust just by playing with a few numbers, the software is free and there's some tutoreals on line and youtube, you can export STL's as well. I did not think I would like it but after playing with it, my mind is more open, for simple shapes it is very fast.


Servo Bracket p, li { white-space: pre-wrap; }



A new cheap 2D Robotic Obstacle Detector

It allows your robot to determine the distance to obstacles and walls and to avoid them.

Here are some parameters:

* detectable range: 20 cm to 150 cm (6 to 60 inches )

* 7.5 degrees angular resolution

* 2 scans per second

* 180 degrees view

* easy interface with other boards it comes pre calibrated

* USB interface power and data  Rs232  and SPI

It is intended more for terrestrial robots (is a bit slower than the laser rangefinders) 

Here is the link :

Servo problems!

I'm having a lot of problems with the servos I'm using to build a quadruped robot. I should start by mentioning that I bought the servos from Dagu like 4 years ago, BUT most of them had never even been unpacked until recently.

The problems are the following: