Let's Make Robots!

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wrench_orange.png Your work in progress or a finished robot: Robot project
script_edit.png Write in your own blog: Blog entry
comments.png Discussions and questions: Forum topic
brick.png Show what you are making robots of: Component
lightbulb.png Help others with what you have learned: Tip or walk through
link.png Add a good web shop, a guide or a cool link: Web link
The trigger senses light changes inside the birdbox and activates the camera
This is another of my camera projects, a light sensing trigger for my bird box. The system uses an LDR to sense changes of light inside the bird box. That occurs … Read more
Drives according to switchboard settings
Using a
This is a toy I made for my kids (twin girls age 5) and they had great fun changing the running patterns. It is programmed by changing the sequence of yellow, … Read more
This is a test platform for me entering to robotics. at the moment there is only tracked chassis,gear-box twin motors,arduino,breadboard . soon I add the  GP2D120 … Read more
I have been asked recently to design a beambot for a customer. According to Wikipedia this is a true beam bot because only analog components are used. This model … Read more
Walks in a circle (no, not on purpose)
Using a
*Update 2010 Jan. 26*  I figured out one of the problems with R7 was there was too much flexibility in its feet. I added several polymorph goobers around the edge … Read more
Introducing Scooty, my first attempt at robotics. Scooty is a self-balancing two-wheeled bot, which loftly aims at being the prototype for a larger ridable version … Read more
This will be my 1st attempt at a sumo style bot/RC. My design stems from Deadblow (http://www.lazytoad.com/teamtoad/season2/deadblow.JPG). Although it wont be as … Read more
The MARC series were designed to test various aspects of bipedal robotics. MARC I was a 1 degree of freedom robot built to test basic balance control.  … Read more
The MARC 1 prototype was used to test some balance software. A small accelerometer was attached to a Stamp PIC. When MARC 1 would tip to one side a servo would move … Read more
History: Inspired by Animusic's bodacious films, I was wondering whether a music robot in a much more simple way would be possible to make. Here is what my little … Read more
First robot navigate around brain.
Hi guys, I´m new here (nine years old), and this is my second robot of the site but my first robot on my page. My first robot is on site of my father (Aruniosmo). … Read more
This might be useful for anyone building self-balancing robots or similar projects
This article introduces an  implementation of a simplified filtering algorithm that was inspired by Kalman filter. The Arduino code is tested using a 5DOF IMU unit … 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
Here's a simple analog pressure sensor I read about years ago in "Robot Builders Bonanza".  It's not an accurate pressure sensor since it's affected by … Read more
Vision guided line following to start with
Using a
Video added August 16, 2009.  I'm using this platform to experiment with vision processing.  It uses the Blackfin Camera with the Matchport WIFI module. The … Read more

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Recently collected


Charges lithium polymer and lithium ion cells
About a year ago, I bought a pretty nice, but old, digital camera in a thrift shop for $3.  I really like the camera, and one thing I like about it is that it has … Read more
Dear: LMR Just to let you know I have been developing for the past month a steampunk robot. I have finished the mechanical and moving onto electrical and software. … Read more
Obstacle avoidance using sonar and IR sensors
This is my latest robot project which I have named BFRMR1. It is a differential drive robot with two castors at the rear. The chassis is made from aluminium sheet … Read more
Using artificial intelligence to identify a disease by its symptoms
1. Introduction A medical tricorder is a handheld portable scanning device to be used by consumers to self-diagnose medical conditions within seconds and take … Read more

DreamMaker Overlord sneak preview

Well, it's time to inform you that the DreamMaker Overlord is launching on Kickstarter soon. 

What is the Overlord? 

Overlord is a FFF (Fused Filament Fabrication) delta 3D printer with a build volume of 150mmD x 160mmH (OverLord) or 170mmD x 260mmH (OverLord Pro). The 3D printer is capable of printing PLA or ABS, uses automatic leveling for precise printing, pause/resume function and many other new features.

inspired by BOB by badji here at LMR, i wanted to build my own four servo biped walker after i kind of failed on the rather complicated 12 servo ROFI. i love BOB's … Read more

Verbal Skills and NLP

I'm starting this forum for discussing verbal skills in robots including but not limited to natural language processing.  I'd like this to be a place to discuss conventional and out of the box ideas for improving verbal skills in robots.  This could involve:

Simplified occupancy grid mapping

I have a setup, where a distance sensor, such as sonar or IR, rotates about 180 degrees and takes a distance measurement every few degrees. What I would like to do is to create a occupancy grid out of these measurements on an Arduino or, more specifically, I would like to compare two different algorithms, which create the grids.
One of these algorithms would be made by myself, but in order to make a solid comparison, I would like the other algorithm to be the one which is mentioned in occupancy grid materials and research papers, which utilizes a binary Bayes filter.