Let's Make Robots!
I have some robots and robot parts looking for a good home. I want to give as many as possible a chance to win but I want entertaining video for everyone. There is … Read more

A peek inside an electric bike motor

I have started on a new project and decided to use electric bike motors. I though some of you would be interested to know what's inside. These motors have good power and torque so no gearbox is required and with all those small windings inside they allow fairly precise control of speed and direction without any mechanical play.

As I want these motors for a robotic project I did not buy the speed controller normally used as it would not suit my needs. Electric bike controllers do not normally have reverse. Now I am building my own.

This is an experiment to see what sort of robot can be made with a cheap picaxe08M. It is also the first time I've actually used my "reusable robot base" as a robot … Read more
Every now and then I want to test a circuit or a new sensor or even some new idea for code but I don't have a starter kit or anything. While shopping for some robot … Read more
Allows a robot to track body heat and flame
This is a new version of my compound eye.I am attempting to make a new version of Splatbot using a 6WD "Wild Thumper" chassis that can fight fires. The major … Read more

Could you use the 256K of memory on the newest Arduino?

Recently the Arduino IDE has jumped from 0018 to 0019 and today I found version 0020 available with support for the ATmega2560!

To me this is great timing as DAGU is developing a new robot controller (Arduino compatible) designed specifically for humanoid and hexapod style robots that require a lot of servos.

The real question is, does anyone think they could use 256K of flash program memory? I thought 128K was heaps with Mr.Tidy's sample code being about 18K at the moment.

Is it worth paying the extra money for an additional 128K you might never use?

Designed as an introduction to robotics. This robot has some autonomous behavior but is also controlled via the supplied universal TV remote making it ideal for … Read more
I have posted some tip/walkthroughs on home made IR sensors for obstacle detection and later for motion tracking. Now DAGU proudly presents the IR compound eye. … Read more

Arduino "Tone" command and the ATmega8 - it just won't work

Recently Frits pointed out that sound was used much with robots on this site. I agree and am trying to add sound to a miniature bi-ped robot I am designing. I am now using an ATmega8A processor set up as an Arduino and recently tried using the tone command with strange results. I only get a few frequencies. The digital oscilloscope shows that I am only getting 5 frequencies  which I guess change when the timers prescaler is changed. These frequencies are:

61Hz, 244Hz, 976Hz, 3.9KHz and 31.2KHz

Robots can have children too!

For some time now projects like RepRap have been aimed at self reproducing robots. Although this was not my original goal I have taken a step towards achieving this.

After a few days of trying to get an Arduino to burn the bootloader onto a blank ATmega chip I have finally had some success. As a result, robots lying about my office waiting for repairs are now capable of burning a bootloader into a blank chip.