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Your wii sensor bar's wires are too short? It takes too much room? No problem! You can make wireless wii sensor bar instead thinking! So what you need: Battery … Read more
This is not as much a tip or walkthrough. It is more my experience of learning to use DipTrace and how to get boards manufactured. The first PCB layout program I … Read more
Generates Arduino code for custom LiquidCrystal library characters
Hi guys, just posting something that I made up to solve a problem and thought I would share it. I couldn't find a custom LCD character generator that worked on a … Read more
Give a sense of touch to a robot using light
I've been trying to think of a good sensor to mount onto my polypod's legs (Yes, I'm still working on it) to give them a sense of touch.  Some people have very … Read more
Helps newbies to learn how to program
Here I will try to explain general idea behind variables, one of the essentials of programming. And I will try to use following analogy: a glass of water. Here … Read more
uses ffmpeg to add the LMR logo to video
   I just uploaded a video of my latest robot to YouTube.  I wanted to add the LMR logo, but I didn't know how.  Here is the result of my efforts.  I run on … Read more
Helps newbies to learn how to program
“Hey, Chapter numbers are in binary!” could you say. And, yes, they are! And they are bytes. And we can have maximum number of 255. Will we go so far? Who … Read more
How to get a photo-interrupter to work as an encoder
I salvaged some photo-interrupters from some printers and scanners. Thinking they would make good sensors, I decided to use them as encoders on my robot (which I … Read more
Servos bring life to our ideas. Servos can be mysterious, but in fact they are very simple. Servos use a simple electronic pulse to tell them what angle you want … Read more
A comparison between Kalman and Complementary filter
Using a
The use of accelerometer and gyroscope to build little robots, such as the self-balancing, requires a math filter in order to merge the signals returned by the … Read more
Introduction SPURT stands for School Project Using Robot Technology, a concept introduced by the Rostock University, in Germany. You can find more about their … Read more
Hello Folks. I want to share with all what happened to me, why I was being wrong and what I learned:   The preface: I'm making a police-style led flasher for an RC … Read more
During my work on my ROV project I considered several ways of waterproofing the motors used as thrusters. There are many that use bilge pumps as they are already … Read more
I've noticed alot of posts lately have been about faulty power supplies, mainly because they are utilizing a 9V battery in their circuit. 9V batteries are intended … Read more
This is often referred to as STT (speech to text) and TTS (text to speech).  When I started with computers (eons ago) there were crude text to speech programs. … Read more
Accurate and simple way to mount a sensor
Let's say you have a sensor on your beloved (or hated) bot. You want to fix it so you can easily tune the distance between it and the floor (for example). You … Read more
How to use timer and interrupts on Arduino boards.
    Update 07/24/2013 04/24/2013 Example 3 has been updated to work with Arduino v1.x.Added ArduinoTimer101.zip examples source code for Arduino v1.x .    Read more
12 servos controller with Arduino
Building a robot with wheels or with legs needs a design completly different. One of the biggest difference is the type and number of motors. While for a robot … Read more
Most of you probably do this all the time, but it might be a helpful tip to any newcomer. One way to reduce noise in robots is to always twist power cables. It … Read more
I got a logic probe a while back but never got around to testing it. That was a mistake as it’s a brilliant tool for debugging your circuit. Until now I have used … Read more