An Arduino Compatible Hexapod

I had a chance to build the iitsii Robugtix hexapod and took some time to play with BigFoot Inverse Kinematics engine that comes with the platform. The engine really simplifies the gait management with the six legged platform. The build was easy, even though you have to manually position 18 servo motors by hand, also…

Quad Holomonic Drive Robot

Over at RJ McNamara’s Blog, he has put together a new Quad Holomonic Drive Robot based on the LEGO® NXT. The robot uses dual Rotacaster® Omni-wheels on each of the four axis’s and four LEGO® NXT Ultrasonic Sensors. Head on over to RJ McNamara’s Blog and check it out.

The Killough Platform Explained

Over at TechnicBricks there is a fascinating post that does a great job of visually explaining the Killough Platform to the uninitiated. As you know I am a big fan of holonomic drive robots and if you are new to the concept, they do a great job of explaining the theory without over complicating the…

Lego NXT Rocker-Bogie Suspension

One of my many Lego NXT project ideas is to build a Rocker-Bogie system similar to the Mars Sojourner, Spirit and Opportunity rovers. It turns out a similar mechanism is ipresented by Brian Bagnall in his book titled Maximum Lego NXT: Building Robots with Java Brains. While I wait on that book to move from…

Lego Mindstorms NXT Split Chassis Steering

Here is an idea I have been playing with for a little while. Instead of simply doing a car with regular steering, I wanted to try a split chassis design where the front of the car rotates in the direction you want to turn. Here are two attempts, but I abandoned any further design after…

Lego Mindstorms NXT Segway

The other night I was researching building a balancing Segway like robot with the Lego Mindstorms NXT kit. I wanted a robot that could balance on two wheels and could move forward and backward. I also wanted the robot to recover when “pushed”. I was familiar with Steve Hassenplug’s Legway built on the Lego RCX…

LEGO MINDSTORMS NXT Robotics Toolset

The Lego NXT Robotics Toolset: 32-bit Processor, More Memory, USB Connectivity to the PC for programming, BlueTooth so your phone can control the robot, Bump Sensor, Light Sensor, Sound Sensor, and RangeFinder Sensor. This is the RCX upgrade we were hoping for…downside, not backward compatible (so what). You want more details? Check out the Lego…

Why Lego Lost Interest In Mindstorms

A nice analysis of why Lego has seemingly lost interest in the Mindstorms line: Lego launched the Lego Mindstorms line of programmable toy brick construction sets with a lot of fanfare back in the fall of 1998, but in recent years the company has lost all enthusiasm for the Mindstorms line. For several years now,…