Let's Make Robots!
Mecanum wheels are hot, smart for robots, cool.. But impossible to get hold of, unless you want to spend USD 2-300. So why not just make your own?
Update: Here is how to make them really fast & stable.. but project will go no further, omni has arrived I got really pi**ed off by the fact that it was hard … Read more
Did you know you can make your own custom characters for a picaxe LCD display? You can make up to 8 different custom characters using the cgram wizard under the … Read more
Updated with Bonus tip! You can "easily" hook up some cheap UHF / FM whatever units to make 2 MCU's talk wireless by serial. But you need to learn some stuff, this is what I learned :)
Since I discovered this: http://letsmakerobots.com/node/5916  all has changed! I was blind, but now I can see. And I can program! On Picaxe, in order to send … Read more
Now with cool video of a real life military prototype! This is an easy to make 6 wheel drive robot platform designed for rough terrain. The chassis is made from 3 … Read more
The GWS servos are extremely easy to modify to continous rotation, here is how :)
Thanks to  ndupont for this: http://letsmakerobots.com/node/4873 and to Anders for this:http://letsmakerobots.com/node/259 - Now I had some GWS-servos that I … Read more
if you, like me, just want components to work, and do not care about making prints, this is a great way to get many little smart micro-boards ready to plug in!
If you ever shop in something like www.robotshop.ca and you (like me) would really like components to be just hooked up & ready, I can strongly recomend … Read more
A tutorial for calculating series resistance and reading LED data sheets
I've noticed that some people are uncertain how to calculate series resistance for a LED or when using a group of LEDs are uncertain about wiring them in series or … Read more
make a cheap servo rotate forever!
Here is how I've modified cheap e-bay servo for continuous rotation, Thanks to Oddbot for his explanations :)    Servo is a SG90 ,  equivalent to HXT900... and … Read more
French version of the "start here" robot
This article is only a translation on fritsl's excellent tutorial, all credits goes to him. Read more
can follow a black line on a flat lighter surface
Using a
This is a walk through for a simple line follower that can follow a black line on a lighter surface, i used black insulating tape on the floor. The robot can be … Read more
In an earlier tutorial on IR object detection sensors I mentioned that they could be used for object tracking. Now I show you how and my progress so far. I've also … Read more
Displays stuff sent through a serial connection from a PC or Microcontroller
Using a
10 October 2009 I discovered a flaw in the current design that will only allow the controller to work with a connection to the computer and not to a … Read more
We all know that a robot is supposed to move. Without movement, a robot is just dull. The same goes for pictures of robots. We wanna see them move! Here are a few … Read more
OK,you can read it now     "The SpeakJet is a completely self contained, single chip voice and complex sound synthesizer." This walk thru will show how to use … Read more
drive a parallel display using a 8574 port expander
Using a
Any parallelly interfaced character LCD you get these days will have a Hitachi HD44780 chip or a different one compatible with the HD44780. These usually have 14 … Read more
Recently I got two XBee modules. And after some struggle with serial comunication I finally understand how to share data between two Arduinos. As a start I used 2 … Read more
command an actuator through wifi
Using a
This describes how to use the GPIO on a wireless router as binary outputs and how to control your electronics from the linux commandline. Software I started out … Read more
How to make polymorph sheets, brackets and a link to making rods. So far I've worked out how to make flat sheets with a smooth glass like finish and from those … Read more
When I ordered my solarbotics track kit, I threw in a few of their "baby" GM motors thinking they would be fantastic for mini robots. When they arrived and it came … Read more