Robot Challenge 006

Not as productive as I hoped this weekend. I managed to complete the cable harness of the motors and blue leds (which was rather boring but important for the project) and tried out a new look (as I’m moving away from the use of reel cans as my chassis). Here is the cable harness, before […]

Robot Challenge 004

The chassis is now more or less operational. Here is a video of it being controlled by an arduino. Robot Challenge 004 from Arkadian.Eu on Vimeo. In this example, all wheels get the same movement instructions, but, as the weight of the battery is falling mostly on one wheel, the rotation is not perfect. In […]

Vex Motors on Arduino

Vex motors (with the Vex Motor Controller 29) are essentially servos. To use them on an Arduino as motors, all you need to do is figure out the “angles” that give you the right speed. The problem is that all motors are slightly different. To find the right angles for my motors, I simply modified […]

Robot Challenge 003

Today I worked on a few necessary but rather boring parts of the construction. I got the Sparkfun compass module from Proto-Pic and spent a few hours setting it up and calibrating it. I used the HMC5883L Arduino library example to generate the following: 1 2 3 4 5 6 7 8 9 10 11 […]

Robot Challenge 002

The project is moving along quite well. Today I received my second order from VEX Robotics and got a chance to finish the chassis. Here are some photos: I now need to get a power source for the four motors. I’m thinking of getting a couple of lead-acid batteries at 12V and reduce the voltage […]

Robot Challenge 001

A friend of mine and I decided to start a robot challenge. The aim is simple: each one of us will build a robot, an autonomous vehicle that will be able to get out of a maze on its own. It won’t be remote controlled but it can talk to a remote computer for instructions […]