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 Robotics / RCX / *4900 (-20)
  LegOS, WIN98 & Cygwin 1.3.2
 
Hello, Well after a week of head beating, cursing, downloads and chicken waving AND a great deal of help from Max Bowsher (this last bit was actually the most useful :-) I finally have legOS up and running with the above setup. Had I followed Max's (...) (23 years ago, 21-Jul-01, to lugnet.robotics.rcx.legos)
 
  Re: Maximum sample rate (turn rate) for rotation sensor
 
Dave and Luis, Thank you both for the information. I'm big admirer of the work you've done for the RCX community. (...) I see. (60/0.003)/16 = 1250 And if you were worried about the Sampling Theorem you would divide that in half just to be sure.. (...) (23 years ago, 21-Jul-01, to lugnet.robotics.rcx)
 
  Re: Mystery Part
 
I bow down to you, Bob! Many thanks for solving this mystery. (...) (23 years ago, 21-Jul-01, to lugnet.robotics.rcx)
 
  Re: Maximum sample rate (turn rate) for rotation sensor
 
When using the standard firmware, sensors are sampled every 3 ms. The rotation sensor uses a quadrature encoder with a 1:4 gearing between the axle and the encoder, so there are 16 "ticks" per revolution of the axle. The decoding routine in the (...) (23 years ago, 21-Jul-01, to lugnet.robotics.rcx)
 
  Re: Maximum sample rate (turn rate) for rotation sensor
 
The hardware can actually do (in my testing) up to ~3000 rpm with good accuracy. The problem is with the standard software, which cannot do more than some low number (which may or may not be 500, I don't recall) because of how it samples the HW. (...) (23 years ago, 20-Jul-01, to lugnet.robotics.rcx)
 
  sample code for the remote patch (pc side)
 
Hi, is anybody using the remote patch ? I d be glad if anybody could post or send me some sample code for the pc-side where remote messages are send to the RCX. Thanx, Olaf Christ (23 years ago, 20-Jul-01, to lugnet.robotics.rcx.legos)
 
  rotation sensor question
 
I installed leJOS, got it up and running, then read on the sourceforge site a support question about the rotation sensor, so I decided to test it out. I wrote a first cut at it and it didn't work, just like the support question suggested: import (...) (23 years ago, 20-Jul-01, to lugnet.robotics.rcx.java)
 
  Maximum sample rate (turn rate) for rotation sensor
 
Does anyone know the correct maximum sampling rate for the Lego rotation sensor? This morning I noticed that Dave Baum gives a value of 1250 RPM in his "Definitive Guide" (page 29), but looking at (URL) see a value of 500 RPM. Which is correct? (...) (23 years ago, 20-Jul-01, to lugnet.robotics.rcx)
 
  Re: Mystery Part
 
Hehehehe... I have to laugh, Brian. Other people have told you that it is a "Brick Separator", and it is extremely useful. The reason that I am laughing is that when I was just coming out of my dark ages almost exactly two years ago... I was just as (...) (23 years ago, 19-Jul-01, to lugnet.robotics.rcx)
 
  Re: Mystery Part
 
Search the Lugnet Guide for "brick separator" (...) (23 years ago, 19-Jul-01, to lugnet.robotics.rcx)
 
  Re: Mystery Part
 
It is a handy tool for separating plates and bricks. -- Bob Fay rfay@we.mediaone.net (URL) Bagnall" <bbagnall@escape.ca> wrote in message news:GGqCwD.4A7@lugnet.com... (...) year (...) (23 years ago, 19-Jul-01, to lugnet.robotics.rcx)
 
  Mystery Part
 
The part I am having problems with is the dark-grey "foot pedal" looking part. Does anyone know what this is called or what it's used for? This has been the single biggest mystery to me since I bought the RIS kit over a year ago. (23 years ago, 19-Jul-01, to lugnet.robotics.rcx)
 
  Re: Hardware Hacking of RCX
 
Roy Wood wrote: (snip) (...) (snip) Hmm... Heres one idea that'll look REALLY good on your resume :) Asymmetric Multiprocessing: RCX -> Basic Stamp 2p40 Use the RCX to communicate with a Parallax Basic Stamp. You can use a 5v regulator and control (...) (23 years ago, 19-Jul-01, to lugnet.robotics.rcx.legos)
 
  Re: Hardware Hacking of RCX
 
(...) Hi, if want to use more sensors, then you might wanna look at (URL) a look at "3 Sharps using 1 input", heat up your soldering iron and have fun. Olaf Christ ---...--- If knowlege is power, how come the more I learn, the more I realize how (...) (23 years ago, 19-Jul-01, to lugnet.robotics.rcx.legos)
 
  Re: working c++ program?
 
plz. I just need to how how everything is included and linked. I did declare it as a member variable. Thanks for your help! Jason P.S. You can just email it to me if you like. Thnx (...) (23 years ago, 18-Jul-01, to lugnet.robotics.rcx)
 
  Hardware Hacking of RCX
 
Considering that LegOS talks directly to the hardware, this seems like a good place to ask the following questions. I am yet again frustrated at having only three inputs and three outputs on my RCX, and am wondering at the possibility of hacking the (...) (23 years ago, 18-Jul-01, to lugnet.robotics.rcx.legos)
 
  Re: working c++ program?
 
(...) Hi Jason, did you declare it as a control member variable ? 1. Project\Add To Project\Components and Controls... 2. Registered ActiveX Controls 3. Choose "Spirit Control" then "Insert" 4. Put the Spirit Control (the Lego Sign) in your (...) (23 years ago, 18-Jul-01, to lugnet.robotics.rcx)
 
  Setup of winlnp
 
Hello, I'm having problems setting up winlnp and getting it to work. I have downloaded, compiled and utilized legos 0.2.5 successfullyand have downloaded and compiled the winlnp visual c++ package. But i haven't found any thorough documentationon (...) (23 years ago, 18-Jul-01, to lugnet.robotics.rcx.legos)
 
  Re: newby question, anyway to say not greater than?
 
How 'bout less than or equal ? (23 years ago, 18-Jul-01, to lugnet.robotics.rcx)
 
  Drive a motor using the sensor port - safe?
 
I accidentaly discovered that when the sensor port on the RCX is set to light sensor type, a motor connected to it will run. The motor can only run in one direction with a low torque, but it can be useful when you just need the extra motion and (...) (23 years ago, 18-Jul-01, to lugnet.robotics.rcx)


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