 | | Re: Difference in motorspeed when activating lightsensor!
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(...) Hi! (...) Do you just add the sensor, or do you also change the program? Can you post the program(s)? (...) No! (...) I'd rather see what causes this behaviour first, before making some kludge to stop it. Jürgen PS: I'm also playing with the (...) (23 years ago, 9-Sep-01, to lugnet.robotics.rcx.java)
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| | Difference in motorspeed when activating lightsensor!
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Hi there, I've just been playing around with a vehicle with a motor for each of the two main wheels. If I don't load the RCX with anything else than these two motors and set their respective speeds to 0 and 7, it drives in a nice circle with a small (...) (23 years ago, 9-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: About SetSerialComm(SERIAL_COMM_DEFAULT);
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You know, I modified legOS to make message commnucation between legOS and NQC, I found new formware can send raw data so that I think if I can make LNP communication between legOS and NQC. Zhengrong (...) (23 years ago, 8-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Re: About SetSerialComm(SERIAL_COMM_DEFAULT);
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hi Zhengrong, Sorry, I didn't understand (or read) your message well, I thought you were looking for communicating with a PC. Well as far as my knowledge reaches, I agree with Dave, the RCX can't receive raw data (except for program downloading, (...) (23 years ago, 8-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Mindstorms 2.0 in Germany
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Hi, I 've seen the new Mindstorms 2.0 at Toys'R'us in Neuss (near Cologne and Duesseldorf). It comes with the new usb ir tower for 489 DM. They also sell the old package 1.5 with the old serial ir tower (no usb!) for 449 DM. I don't know if the (...) (23 years ago, 8-Sep-01, to lugnet.robotics.rcx)
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| | Re: About SetSerialComm(SERIAL_COMM_DEFAULT);
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Hi Stef, I read your page, but I can't find what I need, I want to know how to communicate between RCXs with raw data (without header 55,ff,00), I don't care to communicate between Rcx and PC. You can read Dave's message, it seems he is also sure (...) (23 years ago, 8-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Re: About SetSerialComm(SERIAL_COMM_DEFAULT);
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I haven't done a lot of testing with SendSerial(), so I can't say for certain what combinations are possible, etc. If you use SetSerialPacket(SERI...CKET_RCX), any bytes you send get built as a packet (with the 55 ff 00 header, data followed by (...) (23 years ago, 8-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Re: About SetSerialComm(SERIAL_COMM_DEFAULT);
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hi Zhengrong, probably Dave answered your question, but I didn't see his answer in this newsgroup. I'v done some tests with different serial protocols and different baudrates, see (URL) it's of some use to you. (...) best regards, Stef Mientki (23 years ago, 7-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Re: RCX 3.0 and legOS 1.2.4
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Would be great it it's true .... and I hope not only legOS will be updated ... all the other tools should get a new release, too Ralf (...) (23 years ago, 7-Sep-01, to lugnet.robotics.rcx)
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| | Re: About SetSerialComm(SERIAL_COMM_DEFAULT);
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My new question is how to receive this packet data sent by SendSerialData()? Zhengrong (...) (23 years ago, 7-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Re: Anyone know how to build a stall sensor?
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Paul, If you put a small lamp in serie with the motor , you can monitor the current drawn by thr motor through a lightsensor. The more current the more the light, there is only one thing you have less motorpower. Gretings, Rik "Paul Andrews" (...) (23 years ago, 7-Sep-01, to lugnet.robotics.rcx)
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| | About SetSerialComm(SERIAL_COMM_DEFAULT);
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Hi, Dave In your NQC Guide, there is a text about this function "The default is to send data at 2400 baud using a 50% duty cycle on a 38kHz carrier.", how about other settings, for example, parity and stop bit, is it odd parity without stop bit? (...) (23 years ago, 7-Sep-01, to lugnet.robotics.rcx.nqc)
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| | Code-only Line-tracking competition
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You can enter the WORKSHOP 3D LEGO RCX Challenge - a robot competition to be held in Seattle on October 6th - even if you don't want to travel here. There will be a "code only" line-tracking event that anyone can enter. Build a "standard robot" at (...) (23 years ago, 7-Sep-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | RCX 3.0 and legOS 1.2.4
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LEGO company will release RCX 3.0 at the end of next year, it will have 6 input port and 6 output port, 20x200 dots LCD, CPU is H8/3294 with 32K ROM and 64K RAM, it has a power socket as RCX 1.0, and with a built-in speaker, you can play wav or mid (...) (23 years ago, 7-Sep-01, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | New patch for remote and message
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I made a new patch for remote control and standard firmware message communication, I defined three config constants in config.h: 1. CONF_REMOTE_CTRL: Remote control services, comment it if you don't use remote control. 2. CONF_MESSAGE: Standard (...) (23 years ago, 7-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: Anyone know how to build a stall sensor?
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(...) Yes. I just got a rotation sensor. Trouble is that the motors could stop for a variety of reasons (like the robot isn't moving). That isn't the real reason though (I could always handle that in software). The real reason is that ever since I (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | Re: Anyone know how to build a stall sensor?
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(...) Yes. I found on article on using the battery voltage to determine the same thing, i.e. more current, less volts. To do it you need replacement firmware. I use leJOS (a Java VM), I'm one if the developers, so I could go in that way. I'm going (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | RTSJ
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So you're in to Java and the RCX? If you're in to it deep then you might be interested in the Real Time Specification for Java (RTSJ) at: (URL) - Paul (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.java)
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| | JStamp
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So I don't know if this is heresy on a Lego web site but if you're interested in Java and RCX you'll probably find this interesting too: (URL) I have no affiliation with this company, I am a contributer to leJOS. But I do like robotics and I do like (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: Anyone know how to build a stall sensor?
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(...) Hi Paul, I was interested in doing the very same thing a while ago. It sure would save on sensors if the motors had their own feedback! I know (as you are probably aware also) that the current can be monitored using the cybermaster. I saw how (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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