 | | RIS 1.5 kit
|
|
I am looking for the lowest priced RIS 1.5 kit. I was wondering if anyone knew of someplace online that is selling it for cheaper than $200. I have heard that it sells for around $150 or $160 at some site, but do not know where. Any help is (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | RE: FW: Another DIY sensor
|
|
Steve I would hope that better mice would have better encoders, but I don't know, I have a Logitech track ball I think I will take it apart and look at it to see how much difference there is.... The guy who suggested duct taping a mouse to the (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | Re: any idea if radar can be used with the rcx?
|
|
Radar tends to overkill for most Lego applications. (Large and expensive) I have a couple of infra-red based detectors on the web page below, that are built into a standard 2x4 bump brick. Maximum range is about two feet. (URL) - pete. (...) -- Pete (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
I forgot to mention that two optical mice are needed for accurate navigation. With only one sensor you cannot track if the robot turns. I think it’s a good idea to buy a optical mouse because I haven’t seen any suppliers carrying the HD2000 chip. If (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | Re: any idea if radar can be used with the rcx?
|
|
(URL) Too see the store is 100 times more expanse as the web site. Happy surfing... Fred (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | Tracks.
|
|
Just a swift note: The 5934 "Track Master" from the adventurers' range has some nice *small* rubber tracks. They are about half the width and 2/3rds the length of the RIS tracks...which I found was very useful for making a *small* tracked robot. (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | FW: Another DIY sensor
|
|
I was throwing a mouse away the other day and instead took it apart to see what makes it tick, well, it's a perfect rotation sensor. I think it will be almost twice as accurate as the lego rotation sensor, more as this project develops. I think it (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | Re: any idea if radar can be used with the rcx?
|
|
I work at a Mercedes-Benz dealership and checked into the pricing of the radar in the new 2000 S-Class... Retail, $4300!! Just for the control unit, all the other gizmos needed total to about $1500. Guess that puts radar cost into perspective. Might (...) (25 years ago, 18-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
(...) All optical mice use the HDNS-2000 (short: HD 2000) chip from Agilent Technologies. There are two output modes: the rs232 output and the quadrature output mode. The quadrature output gives the Delta X and Delta Y values (how much the x,y (...) (25 years ago, 17-Nov-00, to lugnet.robotics)
|
| |
| | Re: Sets with worm gear box?
|
|
I just tried to send this reply directly to pavogel@pacbell.net and my message is returned as undeliverable. Is this some kind of "special" email address? So here is my answer, to the more general audience, please forgive; The two odd pieces, in (...) (25 years ago, 17-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
(...) Those cameras have a small, low-resolution CCD in them, and they take snapshots of the mousing surface and compare them to detect the quantity of motion. If you were going to use one of those mice your best bet would be to put together a (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
(...) Did you consider buying a $5 computer mouse and gutting it? That will give you not one but TWO slotted disks and TWO dual optical detectors. It's hard to imagine another solution for $2.50 per sensor! IIRC, most cheap mice are ~200 clicks per (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
The optical mice are still $50. I bought one and ended up taking it back, didn't work so well. But it definitely looked cool. Would probably make a good sensor though I don't know what kind of values it sends out... (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
(...) How about (URL) you filter out the marketing-speak it would appear that the optical sensor is a combination digital camera and signal processor. Dunno what the chances are of getting any sort of intelligle output other than +/- x and y is. (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
| |
| | A technic elevator
|
|
I have updated my Lego page with my new own creation : a Lego elevator. (URL) Klein A Mindstorms fan. (25 years ago, 17-Nov-00, to lugnet.robotics, lugnet.technic)
|
| |
| | Re: Clarification of access control
|
|
(...) I forgot to show that resources get released, the functionality is more like this: try { grabResource(X); ...body... releaseResource(X); } catch (ResourceLostException e) { } Dave (25 years ago, 17-Nov-00, to lugnet.robotics)
|
| |
| | Re: Another DIY sensor
|
|
Does the ratio of the disk track diameter and the seperation between the interuptors allow you get 90 degrees (optical) seperation ? IE could you get quadrature off of it ? BTW, Please post pictures : ) Thanks, -JSM (25 years ago, 17-Nov-00, to lugnet.robotics)
|
| |
| | BrickBots.Com is launched - New Robotics Contest with Prize
|
|
I have received so much good information by lurking in the LUGNET community, I am finally giving something back. I am pleased to announce both the launch of BrickBots.Com ( (URL) ) and the start of our first contest, the Aluminum Can Stacking (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
| |
| | Re: any idea if radar can be used with the rcx?
|
|
You can get pretty good proximity detection using the built in IR port to send (arbitrary) messages out and simultaneously sampling with the stock light sensor to pick up IR returns. Proximity detection out to about 10 inches is possible. Search the (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
| |
| | Re: Clarification of access control
|
|
If a task loses its resources (due to an equal or higher priority task acquiring them), then control leaves the body of the acquire statement. If there is a "catch" block following the acquire, then the catch block is executed, otherwise control (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
|
