 | | Re: Anyone know how to build a stall sensor?
|
|
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)
|
| |
| | About SetSerialComm(SERIAL_COMM_DEFAULT);
|
|
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)
|
| |
| | Code-only Line-tracking competition
|
|
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)
|
| |
| | RCX 3.0 and legOS 1.2.4
|
|
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)
|
| |
| | New patch for remote and message
|
|
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)
|
| |
| | Re: Anyone know how to build a stall sensor?
|
|
(...) 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)
|
| |
| | Re: Anyone know how to build a stall sensor?
|
|
(...) 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)
|
| |
| | RTSJ
|
|
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)
|
| |
| | JStamp
|
|
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)
|
| |
| | Re: Anyone know how to build a stall sensor?
|
|
(...) 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)
|
| |
| | Re: Anyone know how to build a stall sensor?
|
|
I assume you have already discarded the simple approach of using a rotation sensor and detecting that it has stopped rotating. (This gives you an odometer for free!) Or if you don't have a rotation sensor, you can use the half width six hole pulley (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Anyone know how to build a stall sensor?
|
|
(...) No. I didn't know it existed. Of itself it is interesting, but I actually want to use stalls as a means of collision detection. (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: legOS - Which site?
|
|
(...) Version 2.5 from Sourceforge is the latest. (...) Installed it the other day using these instructions without any problems: (URL) only thing that varies from memory, was setting the environment variables. (...) Not sure, but I don't think so. (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.legos)
|
| |
| | legOS - Which site?
|
|
Hi, I'm still new to legOS, and the RIS come to that, and while looking for info on legOS came across both of these : (URL) seem to have different versions. Noga.de seems to have more up-to-date newsposts despite having an older version of legOS. (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.legos)
|
| |
| | Re: Anyone know how to build a stall sensor?
|
|
(...) I suppose you've already considered using the white 24 tooth clutch (looks like a gear)to limit the torque and prevent motor stalls... Jerry (23 years ago, 5-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Anyone know how to build a stall sensor?
|
|
Hi, I'd like to be able to monitor the current being drawn by a motor using the RCX (not the CyberMaster :-( ), so that I can detect stalls and possibly spins. I can't believe that this is particularly hard but I can't find any references to one on (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: rotation sensor question
|
|
Hi Jurgen, (...) Ok, then I will anihilate my answer/question... :o) (...) Ok, then I can save some time there... Thanks! (...) It's working perfectly, thank you! It's been up and running flawless since 1.0.0beta3, for all I know... Regards, Martin (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.java)
|
| |
| | Communication API between RCX and a PC
|
|
Hi there, Have you seen this project: (URL) an API for communication between your PC and RCX using InputStream's and OutputStream's. Regards, Martin E. Nielsen (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.java)
|
| |
| | Re: Why compiler can't find header file program.h?
|
|
I found the reason, there are two config.h, one is for kernel in boot directory, one is for dll in dll-src, they have different definition. Zhengrong (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.legos)
|
| |
| | Why compiler can't find header file program.h?
|
|
I add lines as below into lnp.c #ifdef CONF_PROGRAM #include <sys/program.h> #endif But I got error message when compile it. lnp.c:36: sys/program.h: No such file or directory In some lnp.c file, there are #ifdef CONF_VIS #include <dlcd.h> #include (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.legos)
|
