 | | Re: Line Follower
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(...) Thanks Steve! It's perfect. I will use it in one of the NXT robots. But now, part of this project is to show some comunications between two robots, (and the other one is a RCX driven. It will also follow a line). I saw some time ago a small (...) (18 years ago, 3-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: straight line differential drive code
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(...) I built a project to do just what you want. In a tracked vehicle I have each track driven by a separate motor and each also drives one side of a 'differential' but in opposite directions. If both motors run exactly the same speed the sum is (...) (18 years ago, 2-Jan-07, to lugnet.robotics)
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| | Re: straight line differential drive code
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(...) Just one rotation sensor. The differential gives you the difference (hence the name) of the two sides. If it's zero, you're driving straight. A positive rotation means you are turning one way, and negative is the other. It's not pseudocode, (...) (18 years ago, 31-Dec-06, to lugnet.robotics)
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| | straight line differential drive code
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Does anyone have some RCX code to make a simple differential drive (2 independent motor/wheel combinations) with 2 rotation sensors drive straight. I'm sure it's been done many, many times before and I don't want to reinvent the wheel here. NQC or (...) (18 years ago, 31-Dec-06, to lugnet.robotics)
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| | straight line differential drive code
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Does anyone have some RCX code to make a simple differential drive (2 independent motor/wheel combinations) with 2 rotation sensors drive straight. I'm sure it's been done many, many times before and I don't want to reinvent the wheel here. NQC or (...) (18 years ago, 31-Dec-06, to lugnet.robotics)
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| | Connect BT devices to the NXT without a passkey?
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Is it possible to connect BT devices to an NXT without using a passkey? The device I'm trying to use (a Nintendo Wii remote) doesn't use passkeys, AFAIK, since when I connect it to my PC I skip the pairing process. (18 years ago, 28-Dec-06, to lugnet.robotics.nxt, lugnet.robotics)
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| | Seymour Papert - Status
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All, In some unrelated correspondence, I received news that Dr. Papert was badly injured in Hanoi: (URL) Many of you know that Dr. Papert coined the term Mindstorms and was a key player in the early development of what became the RCX at MIT. I'm (...) (18 years ago, 27-Dec-06, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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(...) Unfortunately, I've got a dongle with Widcomm 5.1.0.1100 software. I need it for devices not supoorted by Win XP SP2 so I can't really go back. I assume that it the PC connects to the brick using the simple serial port profile (SPP) - Is this (...) (18 years ago, 26-Dec-06, to lugnet.robotics)
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| | Re: Bluetooth and windows 2000
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I am using a Compaq (HP) nc8000 laptop which has a built-in BT device and it works fine with Windows 2000, so BT should be OK on W2K (with the right device). "Patrick Levy" <patrick@omiccron.com.br> wrote in message news:J7HJJI.6x3@lugnet.com... (...) (18 years ago, 24-Dec-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: and the sine & cosine functions for the NXT
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(...) As explained on our pages, I am using CORDIC algorithm. This assures best accuracy and converges much more rapidly than Taylor. There is one trade-off though, because there is no bit shifting operation in the toolkit, I must do division (...) (18 years ago, 23-Dec-06, to lugnet.robotics)
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| | RE: and the sine & cosine functions for the NXT
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Maybe a cheap sollution, but if I have to draw a sine or cosine I wouldn't calculated. Well, I will calculate it once and put it in a table. Then draw the sine & cosine from the calculated coordinates from the table. Really fast. And, euh, nobody (...) (18 years ago, 23-Dec-06, to lugnet.robotics)
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| | Re: and the sine & cosine functions for the NXT
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(...) I'm doing a project using trig, but I was going for computer control. I may be able to use this though. Steve (18 years ago, 22-Dec-06, to lugnet.robotics)
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| | Re: and the sine & cosine functions for the NXT
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(...) Well, I've already done that, as well as a nifty display meter, and some other stuff that depends on trig functions... but I did it all in NXT-G, without the toolbox: (URL) looking forward to trying your custom stuff, however, as my NXT-G trig (...) (18 years ago, 22-Dec-06, to lugnet.robotics)
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| | and the sine & cosine functions for the NXT
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now we have a complete integer trig-function package. Challenge : who is going to draw the first sine and cosine waves on the NXT display? Please report any bugs. www.convict.lu/Jeune...sIntro.htm Claude (18 years ago, 22-Dec-06, to lugnet.robotics)
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| | arctangent block for NXT
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Hi interested, LV toolkit is amazing ! It allows writing cool blocks. Now we have the arctangent function... for integer numbers !!! f(x)=atan(x) You enter x as milli_x. Example: 1000 milli = 1 !!! The result of the function is deci-degrees, a (...) (18 years ago, 21-Dec-06, to lugnet.robotics)
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| | Re: Mindstorms USB connection and memory
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In article <C351BAFF646DAC4F8F7...98F@YS-EX- CLUSTER.ysi.int>, Fred Mullins <lego-robotics@crynwr.com> writes (...) It is not safe to do this. Perhaps there is a power-down PC connected, that will be unable to deal with 5V being applied to the (...) (18 years ago, 21-Dec-06, to lugnet.robotics)
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| | RE: Mindstorms USB connection and memory
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There is a lot of "not quite standard" to existing USB capable products. Some things like digital cameras and thumb-drives get along fine with current operating systems, but most of them have their own drivers available to implement extra features. (...) (18 years ago, 20-Dec-06, to lugnet.robotics)
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| | Re: Super Rex Robot
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Updated Super Rex Information is now posted at: (URL) Bryan (18 years ago, 20-Dec-06, to lugnet.robotics, FTX)
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| | Re: Mindstorms USB connection and memory
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(...) That being said, I did once load my brick up with custom firmware that made it look like a USB key - with just under 256K (yes K) of storage - not very useful, and probably the most expensive USB key ever made! Ralph (18 years ago, 20-Dec-06, to lugnet.robotics)
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| | Re: New mini-motor?
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(...) Yes, it's real. Do a search on Ebay and you will see it being sold there. Although I dont have one, I have talked with the seller about it and he seems quite legit to me.. and interested in building them for use with Mindstorms NXT, RCX etc. (...) (18 years ago, 20-Dec-06, to lugnet.robotics)
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