Let's Make Robots!
Allows your robot to see and track nearby objects
The purpose of this cheap, easy to make eye is to allow your robot to track movement of nearby objects (within 200mm). After much experimentation and various … Read more

China 2010

21-5-2010

A few things have happened this last month. I meet Xiao Yue (Little Moon) about a month before I went to Australia. She can't speak much English and my Chinese is still very bad but she seems to like me anyway.

This was taken on her birthday. There was a bit of a food fight with the cake so we ended up with cream on our faces.

Arduino PWM output frequencies and Tone command

I've been playing with a new oscilloscope Dagu bought after the old one died. I decided to check out the Arduino PWM outputs because I'm using an Arduino in my new speed controller and wanted to check if there were any differences as the brake function requires two PWM outputs to be be in sync so that both input are high or low at the same time.

The PWM outputs on pins 5 and 6 share a timer with timing functions such as millis() and delay() run at about 976Hz while PWM outputs on pins 3,9,10 and 11 run at about 488Hz.

The caterpillar robot is available as both an AVR and Picaxe based robot. The picaxe version can be bought from Revolution Education and various picaxe … Read more

DAGU parts price list for LMR members only

I have now removed the pricelist as we now have distributors in Europe and America.

European customers can buy from: Arexx Engineering or Conrad.

American customers can now buy from Robot Shop.

Should Arduino based robot kits have the Arduino built in?

Now that I'm learning Arduino I've developed 3 Arduino robot kits. The first was fairly big and can take the Arduino Mega, Duemilanove or Nano. The second two have had the Arduino built directly onto the PCB so that little or no jumper wires are needed.

Which is better? The additional cost of the Arduino built in is less than buying an Arduino board and with all the basic wiring done it is much easier for those new to electronics.

When I joined LMR I had just written my first picaxe program.The picaxe was easy to learn since I knew basic and the manuals gave you all the information you … Read more
Write on the pavement at high speed!
Using a
Speed writter races around with a spring loaded piece of jumbo chalk writting words. Using a hacked "Rebound" RC car for the body and an Arduino Nano for the … Read more
Cheap 4WD off road chassis for your robot
The chassis of the "Rebound" is perfect for small off road robots. The PCB has a radio receiver and dual "H" bridge. This walkthrough shows you how to make the … Read more

From Picaxe to Arduino

When I joined LMR I had just written my first picaxe program. After 16 months I have finally crossed over to Arduino. The biggest problem I found was that all the commands were not in one neat package like the picaxe manuals (Manual 2 in particular).