Search found 7 matches

by wrutiser
02 Mar 2012, 03:28
Forum: Site Comments/Complaints/Suggestions
Topic: Contests section?
Replies: 22
Views: 14328

Re: Contests section?

What sort of contests do you have in mind? I joined after the demise of nxtasy.
by wrutiser
26 Feb 2012, 23:44
Forum: Mindstorms Software
Topic: Dead reckoning and voltage questions.
Replies: 7
Views: 3934

Re: Dead reckoning and voltage questions.

Assuming you are working with the NXT-G visual environment, you may be able to compensate for the battery voltages effect on turning by setting the steering via a wire to the motor hub. I ran a bunch of experiments in an attempt to relate turning circle diameter to the steering setting but the data ...
by wrutiser
01 Feb 2012, 21:12
Forum: Mindstorms Software
Topic: Signal Processing
Replies: 9
Views: 4709

Re: Signal Processing

Current robotics depends heavily on probability. Lots and lots of applications of Baye's rule. Some suggested sources: Look through the videos at ai-class.com Look into the courses at udacity.com Seek lecture notes, class outlines, etc. for robotics and AI university courses. Some jargon: Processing...
by wrutiser
19 Jan 2012, 20:40
Forum: Robot Building
Topic: Gripper using an engine and four half-wheels
Replies: 10
Views: 7783

Re: Gripper using an engine and four half-wheels

An ordinary worm acts like a gear with one tooth. Each turn of the worm moves the gear by one tooth. Some worms have multiple start threads. A two-start worm acts like a two tooth gear. To visualize: wind a piece of string onto a pencil -- that is like a one start thread. wind two parallel pieces of...
by wrutiser
19 Jan 2012, 19:02
Forum: Robot Building
Topic: Gripper using an engine and four half-wheels
Replies: 10
Views: 7783

Re: Gripper using an engine and four half-wheels

Worm drives work best when the worm is powered and the worm turns the gear. When the gear is powered the friction between the worm and gear keeps both from turning. When a worm and gear are used in machines like jacks and hoists, the friction keeps the load from falling when the crank is released. I...
by wrutiser
13 Jan 2012, 19:54
Forum: Mindstorms Software
Topic: Details of NXT-G Move Block Question
Replies: 2
Views: 1454

Details of NXT-G Move Block Question

What is the best source of "deep" information about the NXT-G software and firmware? Right now, I am interested in how the Move Block data plugs interact with visual interface settings. How is the magnitude of the steering input applied? Is it possible to compute the steering input for a given turni...
by wrutiser
13 Jan 2012, 16:41
Forum: Open Discussion
Topic: Introduction
Replies: 2
Views: 1479

Introduction

If you can read this, I have found the secret handshake.

I am an old, retired, engineer and programmer. I survived the Stanford online AI class and have acquired a Mindstorms Nxt set to play with.
After a lot of Google searching, this seems to be the best place too ask technical questions.

Bill