 | | Re: train control
|
|
(...) hi Juergen I tried it with load, and it works much better! Only that the speed is not very stable in the curves. (...) If i use a cycle of 10ms, then i could only use 10 different speeds, because the Thread.sleep has a resolution of 1ms... (...) (22 years ago, 8-Jul-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: Communication Speed, PC -> RCX, LEJOS!
|
|
From the picture (d1_p31) it looks as though all 4 RCXs can see the tower. I don't know anything about pcrcxcomm.jar or rcxf7port; and not much about lejos, however, if all 4 RCXs try to respond to the tower, you will have collisions. Try covering (...) (22 years ago, 7-Jul-04, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
|
| |
| | Communication Speed, PC -> RCX, LEJOS!
|
|
Hi everyone, Im working on a project with controlling a large Container Crane by 4 RCXs. I have implementet some controlling and a lot of functions in the model, including a userinterface made in Java for a laptop. The crane is controlled by a (...) (22 years ago, 7-Jul-04, to lugnet.robotics.rcx.java, lugnet.lego.dacta, lugnet.robotics.edu, lugnet.robotics.rcx.legos, FTX)
|
| |
| | Re: train control
|
|
Hi Daniel, (...) sorry to reply so late, I wanted to try it myself but didn't get around to do it yet (I'm starting an IT-Business as a consultant/systems programmer, see (URL) managed to run a train from an RCX with the standard power levels using (...) (22 years ago, 5-Jul-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: train control
|
|
(...) There is a fundamental difference between the RCX and a Lego Train controller - the controller uses smooth power from a 3-pin regulator, with the voltage varied using a chain of resistors. The RCX uses PWM power with approximately 166ms square (...) (22 years ago, 3-Jul-04, to lugnet.robotics.rcx.java)
|
| |
| | train control
|
|
hi I want to use rcx to control a lego train, but the fact that lejos only have 7 levels makes it dificult to set the speed. Jürgen Stube wrote in september2001: "Yes, the standard LEGO routines make it very hard to control speed. Basically with an (...) (22 years ago, 28-Jun-04, to lugnet.robotics.rcx.java)
|
| |
| | RE: Bluetooth and firmware query
|
|
Mike, If you're interested, pbForth replacement firmware may be the answer for many of your issues. My serial driver for the RCX is a straight half duplex that turns off the receiver when transmitting to avoid echoes from the IR. It could be (...) (22 years ago, 5-Apr-04, to lugnet.robotics.rcx.java, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.robolab)
|
| |
| | Bluetooth and firmware query
|
|
As some of you may know, we have been hacking RCXs and adding bluetooth modules. What would make life easier is some help modifying the firmware to increase the speed of the serial protocols to the max the Hitachi chip can handle, which is a lot (...) (22 years ago, 5-Apr-04, to lugnet.robotics.rcx.java, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.robolab)
|
| |
| | LejWay (Re: Legway with Standard Lego Light Sensors)
|
|
Salut Philippe, hi everybody, (...) a Lejos version. The hardware is the same with two sensors, and the program is loosely based on yours. Tweaking was not easy, but with a little luck the program below now manages to stand on a sheet of white paper (...) (22 years ago, 17-Mar-04, to lugnet.robotics, lugnet.robotics.rcx.java)
|
| |
| | Re: Driver for Linux USB Tower
|
|
How did you do to specify that it is an 2.4.20-4GB-athlon kernel version? When I'm trying to compile it using : ./configure make su make install the complier says : /lib/modules/2.4.20-...usbtower.o was compiled for kernel version 2.4.20-4GB while (...) (22 years ago, 10-Mar-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: Voltage>10V????
|
|
Hi, I think it is better to continue the discussion here so everybody can profit. (...) The difference is probably negative, often the voltage increases after batteries get a little exercise, maybe because they get warmer. Can you try to display it (...) (22 years ago, 10-Mar-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: Voltage>10V????
|
|
Hi, (...) maybe your RCX is broken? What value do you get, >28000? Jürgen (22 years ago, 9-Mar-04, to lugnet.robotics.rcx.java)
|
| |
| | Voltage>10V????
|
|
Hi and thanks to all that answered my questions. I'm using the method 'getVoltageMilliVolt()' in my robot. But i don't understand the value that i get, more than 10000 mV, why? if 9600mV is the total voltage that batteries provide. Bye and thanks (...) (22 years ago, 9-Mar-04, to lugnet.robotics.rcx.java)
|
| |
| | rcx communications
|
|
hello, for the needs of a robotic course, I am looking for programs for 2 rcx that will make 2 robots communicate and enable some "team play". if you have examples to send me, I will be pleased to get some help. my email: gros_chacal@hotmail.com (...) (22 years ago, 2-Mar-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: getVoltage???
|
|
(...) That's not true. The accuracy is exactly the same, as the value is calculated from the internal one and none is lost through rounding. Jürgen (22 years ago, 25-Feb-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: getVoltage???
|
|
Hi Sole, I've used the getVoltageMilleVolt() in projects to measure how much voltage was used to complete a task. It is the most granular, hence the best accuracy. Don't worry about the other methods. The getVoltageMilleVolt() method is all you (...) (22 years ago, 25-Feb-04, to lugnet.robotics.rcx.java)
|
| |
| | getVoltage???
|
|
Hi!!! I'm trying to test my robot executing certain programms. I take the voltage value in mV with the method getVoltageMilliVolt() before and after the execution. Then i subtract these values in order to get the voltage wasted. But i don't really (...) (22 years ago, 24-Feb-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: where leJOS firmware ?
|
|
(...) In RAM, as specified. RAM will hold onto the data just fine, as long as you supply power to it. And the RCX RAM is powered, via battery (that's why if you remove the batteries, you loose the firmware... and everything else). (22 years ago, 12-Feb-04, to lugnet.robotics.rcx.java)
|
| |
| | Re: where leJOS firmware ?
|
|
(...) The 32K RAM in the RCX is powered by the batteries even when the RCX is turned off. This is why the firmware (leJOS or otherwise) does not get erased when you turn the unit off. But if you remove the batteries for a few minutes, it does get (...) (22 years ago, 12-Feb-04, to lugnet.robotics.rcx.java)
|
| |
| | where leJOS firmware ?
|
|
Hi everybody. I'm trying to guess where exactly the leJOS firmware is stored. All domcuments i've read say that it's in the 32K RAM. But i ask my self why they say RAM; if you turn off the RCX neither the firmware or the user programms doesn't (...) (22 years ago, 12-Feb-04, to lugnet.robotics.rcx.java)
|
