Let's Make Robots!


Droid Planning

Firstly Thanks to Oddbot, Pome & the Dagu team for this amazing Robot.

Assembly time was about 16 hours, that included rebuilding the right wrist to get the servo in a position to be able to pour a liquid ;-)

Life with Little Free time!

Right... It has been Way to long since I have had enough time to jump back into this amazing community so this is a quick Catch up on what has happened and what I've learnt in the last 9 months! (Why-Lumi once said if it's not on LMR it hasn't actually happened! & Some Pretty AWESOME Stuff has happened!)


The Low down....(More Info will Follow)

Moved to Australia, Got a Crap 60hr a week job driving-NO TIME for ROBOTS :-(

This is Tic Tac MAGneToe, As the name suggests it uses an electromagnet to move the game pieces, both for you and itself. NOTE: It does drop pieces which I'm hoping … Read more

Arduino Wavefront Algorithm

First Up... If you want to find out what Wavefront Mapping is all about head over to the Society of Robots Tutorial. It has a great wtite up and its where I first learnt about it.


Basic's done, So lets talk about Map size limits.....

The Arduino 2560 & 1280 both have 8k of SRAM (where the map is stored)

I'm using an array of Int's, each Int is 2 Bytes, so max size would be the square root of 8k / 2.

8192 / 2 = 4096

Sqaure Root of 4096 = 64


So this is the basic idea, more so I don't forget but any input/comments always welcome.

Create a mini CNC for drilling PCB's, it would require...

Building an X/Y Table similar to Geir's (sorry can't link, using a Tab). Instead of a pump hook up a 12v motor with a drill bit adapter

Mount the motor so it can move on the Z axis, either on a spring with a servo to push it down, or threaded rod like normal CNC mechanics. Use the handy TIP120 for switching on/off. (2.2K resistor, Diode)

Map's a robots enviroment, produces shortest path movement
This is my first Visual C# Program.   After a few attemps of trying to get wavefront mapping working on an Arduino, I decided to try simulate it on a PC. After … Read more
This is an Idea I've had and I'd like to know if people think it's possible before I spend loads of money ;-)   It's based on a Hubless Wheel. Read more
Solve's a maze and remembers the quickest route.
Using a
aMaze is A Maze solving robot. Custom build using an Arduino bootloaded atmeag328p as the brain, a SN754410 as Motor Control, all wired on a solderless breadboard … Read more
Navigate around using an IR Rangefinder
Using a
My First attempt at a robot, basically the LMR start here bot hacked out of a BigTrak Jr. If I added on all the time researching to the build time it would be HUGE, … Read more

The Beginnings of My 1st Robot - Bigtrak Jr hack

This is my first attemp to step into a world that has interested me for years.

NOTE: If anybody see's something I've done wrong or could do better please let me know. I'm here to Learn :-)

I have a very limited knowledge of electronics, an OK understanding of programming, Not much spare time, Alot of enthusiasm and google as a teacher. Hence I landed here at LMR, Such a wealth of knowledge is contained in these pages that actually got me started!

So... Finally having some spare cash, I did my best at buying parts I though I could use.