Let's Make Robots!

Tips & walkthroughs

(Yes it's an old picture, but) as you see, we have our tools ready to work on robots.   This is just a miscellany of sensors your robot can use from time to … Read more
Provides a better alternative to the standard motor driver chips
For my first post here I've decided to present a tip rather than a robot build. While working on a my first robot I became frustrated with the selection of motor … Read more
Navigate without killing itself
Using a
Hello once again LMR! I recently made a few changes to my robot “Mobile Arduino Experimental Platform” (MAEP), and have written this tutorial on how to create a … Read more
Allows me to program my Arduino via bluetooth, USB not needed any more
I finally figured out how to program my Arduino controlled "Start Here Robot" clone without leaving my chair using bluetooth. Unfortunately it still only works when … Read more
Just a quick tip for desoldering components. Usually it’s hard to use regular pliers to hold on to a wire and find the right spot on the other side of the board … Read more
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
Gives a robot bluetooth capability
Some time ago I ordered a cheap bluetooth module on ebay for my Arduino. I went for a no-name module, when I say cheap I mean it. (well after all it were only a … 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
Controls small DC motors using a single I/O pin.
There may be times when you have a limited number of I/O pins and you want to drive a small DC motor. You could convert a servo for continuous rotation but servos … 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
 I recently read two great tutorials from gadget gangster on how to write to and read from SD card. Now this is great if you want to write pre-set text. But … Read more
Use a 38kHz remote control receiver sensor for detecting objects and avoid collision.
Do you want to know how to use cheap infrared receiver sensors to detect objects? How to build a Single or Dual proximity sensor and determine fast if you have … Read more
Reveals yet another cheap method of making PCB's at home.
Hi all, Yes you read the title right, I'm going to describe here the method I used to create the above PCB using an INKJET printer. Prerequisites: 1. Inkjet printer … Read more
make motorcontrollers/pcb's survive abuse
Did you know you can solder solid core wire on motorcontrollers and pcb's to make them survive abuse in extreme conditions. Think about it, pcb traces are thin and … 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