Archive for March 16th, 2007

Gyro and Acceleration Combination Sensor = 5 Degree Of Freedom

Friday, March 16th, 2007

Spark Fun Electronics is now carrying a rather interesting sensor:

Spark Fun Gyro Accelerometer Image

It’s actually two sensors in one: a gyroscope and an accelerometer! From SparkFun, “This small PCB board incorporates the new IDG300 dual-axis gyroscope and Analog Devices triple axis accelerometer in a tight footprint.”

Personally, I think helps open new doors to a higher level of thinking for students, hobbyists, educators and researches. Dave thinks there’s no point on having any more than three degrees of freedom because you can determine angular velocity from the X, Y, and Z coordinates from calculations. Although he has a point, I have to argue that it is a lot more convenient to an end user to have all six right out of the box without having to perform additional calculations outside of the sensor to retrieve the other three. What do you think?

Mirage Stereo vision from a single camera

Friday, March 16th, 2007
Mirage_Robotics

There is an interesting discussion happening over at robots.net around the theory of using mirrors to create stereo vision from single cameras.

Nelson Bridwell writes, “One of the many excuses for not using stereo vision on mobile robots is the complexity and expense of arranging two synchronized cameras that can simultaneously capture image frames from different positions. However, in many cases it is possible to capture simultaneous images from two different positions, using only a single camera and a single element mirror arranged in a very simple geometry.” For more details on this idea plus diagrams and photos, see Real Time Stereo from a Single Camera

Link to discussion

related: Real Time Stereo from a Single Camera by Nelson Bridwell

Steampunk robotics – Steam Powered Bots

Friday, March 16th, 2007

This is an older post, but I just saw it and it’s way cool so I’m posting it!

Steam Powered Robots by I-Wei Huang !

walker_v2

rover

trilobite_tank

via ancient boingboing post

link to gallery of bots