 | | Re: Robolab - lejOS communication
|
|
(...) Mario, Lejos supports communication using the original firmware opcodes via the Serial class, but, apart from program download, this is designed for executing opcodes, not downloading data. F7Handler and F7DeliveryHandler are part of and (...) (24 years ago, 1-Dec-02, to lugnet.robotics.rcx, lugnet.robotics, lugnet.robotics.rcx.java, lugnet.robotics.rcx.robolab)
|
| |
| | Robolab - lejOS communication
|
|
Hi all, we are working on our final thesis using lego mindstorms. Our goal is to implement a neural network using the backpropagation algorithm. This neural network will then be used with a webcam for pattern recognition and classification. The (...) (24 years ago, 28-Nov-02, to lugnet.robotics.rcx, lugnet.robotics, lugnet.robotics.rcx.java, lugnet.robotics.rcx.robolab)
|
| |
| | iPAQ <-> RCX serial communication
|
|
Hello People I am working on a project where we are trying to use a compaq handheld with linux and a wireless card as the "brain" of robots. "Underneath" we have an RCX acting as a "spine", which is supposed to receive macro commands from the PC and (...) (24 years ago, 21-Nov-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: download speed
|
|
(...) Daniel, Much more than the 600 byte class gets downloaded. If you do lejos myclass -o myclass.bin, and look at the size of myclass.bin, you will see the true size of the download. If you have a serial rather than usb tower, then you can use (...) (24 years ago, 11-Nov-02, to lugnet.robotics.rcx.java)
|
| |
| | download speed
|
|
hi first, i would like to congratulate the Lejos team. When i bought Mindstorms, didn't imagine i was going to use it with my favorite programming language! I noticed that Lejos (2.0.0) is very slow to download programs or firmware to the rcx, (...) (24 years ago, 11-Nov-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: LEGO Mindstroms 2.0: Alternative transmission techniques
|
|
(...) Andreas, IR struggles to keep contact in one room, so you need an RF wireless solution. It is possible to include a PDA with Bluetooth or WiFi support as part of your robot, and communicate between the PC and the PDA over the RF protocol, and (...) (24 years ago, 20-Oct-02, to lugnet.robotics.rcx.java)
|
| |
| | LEGO Mindstroms 2.0: Alternative transmission techniques
|
|
Hi, we want to build a Roboter with the following characteristics and under the following conditions: The roboter should be able to drive through a whole building by itself. During his drive he detects obstacles, walls etc. Everything he detects he (...) (24 years ago, 19-Oct-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: remote program activation
|
|
Hello Jürgen (...) Thanks, I'll check that out. (...) For the same reason as lejos allows to link/upload up to 5 different programs and the rcx has a program select button! :-) No honestly, if I have a collection of short independent programs which (...) (24 years ago, 25-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: remote program activation
|
|
Hi Kaspar, (...) sending it the remote control sequence for button P1 it will start the currently selected program (not necessarily number 1). There was a more detailed discussion about this on the lejos mailing list a while ago. It's like this (...) (24 years ago, 25-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | remote program activation
|
|
Does anyone of you know, whether it is possible (with a special byte sequence for example) to send a command to the running LeJOS JVM on the RCX which tells it to run a certain uploaded program? Or, if not, is it maybe possible to call a program x (...) (24 years ago, 25-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: RCX <-> PC communication
|
|
(...) Kaspar, There is a bug with serial towers with RCXPort in lejos 2.0. This causes the problem you are seeing. There is a fixed version in (URL) fixes RCXPort, but I haven't put the fix in the LNP versions yet. I only have a USB Tower, and (...) (24 years ago, 16-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: RCX <-> PC communication, more details
|
|
Hi Kaspar, Thanx for the information. In the Lejos-discussion mailing list (Sept 13), Lawrie Griffiths wrote: "A timeout of 100 milliseconds or more should ensure that it reads all the bytes in one message." Looks like it confirms what you (...) (24 years ago, 16-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: RCX <-> PC communication, more details
|
|
(...) Great, I just had too much time at hand, so I could already test the hypothesis above. Great, to be able to post a followup to my own message within half an hour... Ok, here it comes: The PC __IS__ swamping the RCX when using the LNP protocol. (...) (24 years ago, 16-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | RCX <-> PC communication, more details
|
|
Thanks for the three of you (Francois, Roger and Lawrence) who have answered to my questions. I was asked to state some more details, which I'll do here: I am working under linux (SuSE 7.3) and since the linux version of java does not yet support (...) (24 years ago, 16-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: RCX <-> PC communication
|
|
(...) Lawrie Griffiths asked me to forward the following to you: RCXPort should be about twice as fast as RCXF7Port. Do you have a serial or USB tower? I am concerned that you don't get complete reliabilty with RCXPort - I do with a USB Tower. (24 years ago, 14-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: RCX <-> PC communication
|
|
(...) I have not done any experimenting with Data Streams yet since I can get by with bytes. I have tried both the RCXPort and the RCXF7Port. The big advantage of the RCXPort using the LLC protocol is that if the RCX gets out of range or behind an (...) (24 years ago, 13-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: RCX <-> PC communication
|
|
Hi Kaspar, Did you compile the PC end program using javac and did you add pcrcxcomm.jar from the lejos lib directory to your CLASSPATH? Could you give some more details about your problem (what platform are you working on? complete code...)? Wap (...) (24 years ago, 12-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | RCX <-> PC communication
|
|
Ok, here's a little something to think about: I have been testing the three communication protocol stacks of LeJOS 2.0 (josx.rcxcomm package; LLC, LNP and F7 protocols). Simple application: Array (size 20) of ints on both PC and RCX. Got both a (...) (24 years ago, 10-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: Help with Clock
|
|
(...) That's currently done in the leJOS loader (see rcx_impl/main.c), and only if no program is running. So you can't turn it off, but you don't need to turn it off either once your program is running ... Jürgen (24 years ago, 5-Sep-02, to lugnet.robotics.rcx.java)
|
| |
| | Re: Help with Clock
|
|
What about turning the timer off that turns the RCX power off. What would be the class and method or is it a ROM routine. Thanks, Scott (24 years ago, 4-Sep-02, to lugnet.robotics.rcx.java)
|
