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 Robotics / RCX / *9875 (-40)
  RCX infrared broken -- what now?
 
I recently dug my old MindStorms sets out of storage after about five years of inactivity. Naturally the RCXes (I have three) all needed to have their firmware re-installed. I was able to successfully refresh two of the bricks but not the third. I (...) (16 years ago, 20-Aug-08, to lugnet.robotics.rcx)
 
  Re: Problem to send long messages from RCX to PC via com Hack
 
(...) Dear Matthew I have found the problem. It was in kernel\lnp-locical.c -> cheking the echo was the problem solution: echo OFF it is a rough solution, but it works changes 1) rx_handler(void) ... // echos of own bytes -> collision detection // (...) (16 years ago, 29-Jun-08, to lugnet.robotics.rcx.legos)
 
  Re: Problem to send long messages from RCX to PC via com Hack
 
I don't know if this is would be of any help, as it uses a different approach, but I thought I'd pass it along anyway.... Bi-directional Bluetooth to IR translator - (URL) (PDF format: (URL) ) While this solution doesn't allow both the serial and IR (...) (16 years ago, 28-Jun-08, to lugnet.robotics.rcx.legos)
 
  brickOS is slower than NQC for sending message
 
I tested two ways with brickOS and NQC, source as below, you will find the NQC can only send about 80 messages in 4s, brickOS can send all 255 messages, but need 20s, in other word, NQC needs 50ms for sending a message, or brickOS needs above 100ms (...) (16 years ago, 26-Jun-08, to lugnet.robotics.rcx)
 
  Problem to send long messages from RCX to PC via com Hack
 
Hi, Once again i am back about RCX and BT-Connection. Receiving messages from the PC via BT to the RCX is OK. But if I send messages from the RCX to the PC with 4800 Baud i get only 4 Bytes. So I go back to 2400 Baud, forget BT and make a serial (...) (16 years ago, 10-Jun-08, to lugnet.robotics.rcx.legos)
 
  RE: multiplex 2 touch sensors on a single RCX port
 
Sorry, I don't mean the duration, not hysteresis. -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Elizabeth Mabrey Sent: Monday, June 02, 2008 6:11 PM To: lugnet.robotics.rcx....lugnet.com (...) (16 years ago, 3-Jun-08, to lugnet.robotics.rcx.robolab)
 
  multiplex 2 touch sensors on a single RCX port
 
I have these 2 touch sensors multiplexing on the same input port. Their raw values are 47 and 39. I tried to set up 2 separate events, one for the range of 45 to 50 and another one for 35 to 40. However, the one for the lower feedback often set off (...) (16 years ago, 2-Jun-08, to lugnet.robotics.rcx.robolab)
 
  Re: Remote control RCX by mobile phone
 
Dear Zhengrong Zang I don't thing that this will be work because as far as i know mobile phone's using the irda protokoll like on the pc's to comunicate to mobilephones and other devices. The protokoll is the same: baud parity and stopbit but it (...) (16 years ago, 30-May-08, to lugnet.robotics.rcx)
 
  Re: RCX Serial Hardware Hack
 
Dear Claude (...) A: Thank you for finding the PDF. (...) A: I will check ( measure the Voltage on the IF LEDS) should be approx. 9V betweem LED and Transistor if everything is off. (...) A: Now i had success . It works. (...) I have allready done (...) (16 years ago, 29-May-08, to lugnet.robotics.rcx.legos)
 
  Re: RCX Serial Hardware Hack
 
Dear Matthew (...) A: Now it works with 4800 baud via bluetoothconnection . There was a couple of Problems. 1) At first i tried with the USB Tower but i coult only swith to 4800 bauds but there is no possibilty to change parity. 2) With the serial (...) (16 years ago, 29-May-08, to lugnet.robotics.rcx.legos)
 
  Re: RCX Serial Hardware Hack
 
"Claude Baumann" <cbaumann@ci.educ.lu> wrote in message news:K1E031.y4@lugnet.com... (...) I was able to retrieve it from archive.org - (URL) . (16 years ago, 28-May-08, to lugnet.robotics.rcx.legos)
 
  Remote control RCX by mobile phone
 
I try to make a appli that executed in mobile phone, it can control RCX. The mobile phone's SDK provides class RemoteControlData with some methods as below: setPulse(int leader_on, int leader_off, int trailer_on) leader_on: start bit High period (...) (16 years ago, 27-May-08, to lugnet.robotics.rcx)
 
  Re: RCX Serial Hardware Hack
 
(...) The carrier should be quiet in any case, because it disturbs the TX signal. (...) We tried this,but it didn't work. Why, because the transistor will drain some current, if the emitter has positive voltage and the base goes low. If the carrier (...) (16 years ago, 24-May-08, to lugnet.robotics.rcx.legos)
 
  Re: RCX Serial Hardware Hack
 
Glad to hear it is working--thank you for the update. If I may ask, I have a few questions-- * So if I understand these posts correctly, 4800 baud now works with the IR connection and not just with the hardware hack? *A couple posts from Dick Swan (...) (16 years ago, 24-May-08, to lugnet.robotics.rcx.legos)
 
  Re: Success
 
Hi I have implemented the stuff // and set the port6<7> pin LOW. Now the upper PNP transistor isn't conducting anymore. Now TX and RX works Here are the program #include <lnp.h> #include <conio.h> #include <string.h> #include <lnp-logical.h> (...) (16 years ago, 20-May-08, to lugnet.robotics.rcx.legos)
 
  RCX Serial Hardware Hack
 
Hi As allready described in a other thread i have build a bluetoothconnection between pc and the RCX. There is one thing that the serial bluetooth is only available to tx/rx with a minimum from 4800 baud. At first i compiled brickos 0.9.0 with (...) (16 years ago, 20-May-08, to lugnet.robotics.rcx.legos)
 
  Re: brickos 090 problem no program download with CONF_LNP_FAST
 
(...) I have found the thread, its in (URL) is a also a 2 thread in (URL) the usb tower dll. and a c program called joybricxsrc.zip I looked short in the header files LEGOUSBTowerioctl.h and there is a posibility to set the speed #define (...) (16 years ago, 3-May-08, to lugnet.robotics.rcx.legos)
 
  Re: brickos 090 problem no program download with CONF_LNP_FAST
 
.Sorry for the delay Now i am in italy , triest. so i just do a short look in the messages. Thanks for the answers. In meantime i recogmised too that there is no serial baud rate change in the dll for the usb. I think i have something at home what i (...) (16 years ago, 3-May-08, to lugnet.robotics.rcx.legos)
 
  RE: brickos 090 problem no program download with CONF_LNP_FAST
 
Somewhere in the bowels of the header files within the RCX SDK is a list of "IODEVICE control commands" which does include description of messages required to change baud rate on the USB tower. I am assuming you're not using the LEGO Windows DLL (...) (16 years ago, 30-Apr-08, to lugnet.robotics.rcx.legos)
 
  Re: brickos 090 problem no program download with CONF_LNP_FAST
 
Hello Bernhard, (...) I just checked the source code. There is no speed setting for usb tower in the code. If you look into firmdl3 you also find that fast mode is disabled for USB, because it doesn't work. I think the USB tower sends at 2400 baud (...) (16 years ago, 30-Apr-08, to lugnet.robotics.rcx.legos)
 
  RE: brickos 090 problem no program download with CONF_LNP_FAST
 
You should scan for some old posts by either John Barnes or Philo concerning the different "IR transceiver" chips used between RCX 1.0 and 2.0 and between serial vs USB towers. As I recall: Serial tower can only transmit 38 KHz carrier. It's IR (...) (16 years ago, 30-Apr-08, to lugnet.robotics.rcx.legos)
 
  Re: brickos 090 problem no program download with CONF_LNP_FAST
 
(...) Now i have success ! !) i made to directorys brickos-0.9.0_orig with //#ifdef CONF_LNP_FAST in /boot/config.h and util/dll-src/config.h and brickos-0.9.0_pat48 with #ifdef CONF_LNP_FAST in /boot/config.h and util/dll-src/config.h 2) compile (...) (16 years ago, 30-Apr-08, to lugnet.robotics.rcx.legos)
 
  Re: brickos 090 problem no program download with CONF_LNP_FAST
 
Hello Jochen At first i was astonished, that somebody is answering so fast, because in the last 2 years there is not much conversation here. (...) I am not completly shure about your question concerning standart HW. I use the USB Tower and the (...) (16 years ago, 30-Apr-08, to lugnet.robotics.rcx.legos)
 
  Re: brickos 090 problem no program download with CONF_LNP_FAST
 
Hello Powolny, > > I build allready a bluetooth connection between the pc and the rcx . The > bluetooth module (BTM-222) supports the spp serial protocoll only for 4800 or > higher baudrates. But it is cheap in comparsion to other ones. Costs about (...) (16 years ago, 29-Apr-08, to lugnet.robotics.rcx.legos)
 
  brickos 090 problem no program download with CONF_LNP_FAST
 
Hi I build allready a bluetooth connection between the pc and the rcx . The bluetooth module (BTM-222) supports the spp serial protocoll only for 4800 or higher baudrates. But it is cheap in comparsion to other ones. Costs about 14 Euros. Look here (...) (16 years ago, 29-Apr-08, to lugnet.robotics.rcx.legos)
 
  Re: robolabatceeo/college/tutorials Is not working
 
(...) (URL) all the information that the missing link had and more. (16 years ago, 28-Apr-08, to lugnet.robotics.rcx.robolab)
 
  Re: Camera Error
 
In lugnet.robotics.rcx.robolab, Tom Lohre wrote: The error from within RoboLab is “OLogitech QuickCam Web-WDM ; Problem (...) I solved the problem by migrating to LabView. I look forward to learning how to send programs to the RCX via LabView. (16 years ago, 28-Apr-08, to lugnet.robotics.rcx.robolab)
 
  Re: Camera Error
 
(...) The error from within RoboLab is “OLogitech QuickCam Web-WDM ; Problem connecting Video Output to Video Renderer.” (16 years ago, 28-Apr-08, to lugnet.robotics.rcx.robolab)
 
  Camera Error
 
I am working on a program that uses RoboLab 2.9 with the camera. When I open the Vision Center I get an image but when I run my program I get no image just black then a speckled image. I tried running my program with Vision Center running and got (...) (16 years ago, 28-Apr-08, to lugnet.robotics.rcx.robolab)
 
  Re: Trains, DCC, and pbForth
 
I realize this thread is kinda old but ...does anyone know if Chris Phillips ever made his TrainLab software available? I have tried a few times to contact Chris without any success. I have been looking into automating my train layouts and would (...) (16 years ago, 11-Apr-08, to lugnet.trains, lugnet.robotics.rcx.pbforth, FTX)
 
  Re: advice on what Mindstorms book(s) I should consider buying
 
(...) This is my preferred RCX book too! Philo (16 years ago, 28-Mar-08, to lugnet.robotics.rcx)
 
  Re: advice on what Mindstorms book(s) I should consider buying
 
My son really liked the book "Building Robots with Lego Mindstorms" by Ferrari, Ferrari, and Hempel, because it teaches design principles, rather than just giving step-by-step instructions. (16 years ago, 27-Mar-08, to lugnet.robotics.rcx)
 
  Re: advice on what Mindstorms book(s) I should consider buying
 
(...) Hi Jonathan, If you're looking for a great introduction to RIS 2.0 and would like some building instructions, I recommend "Definitive Guide to LEGO MINDSTORMS, Second Edition" by Dave Baum. If you're looking for tons of interesting ides but (...) (16 years ago, 27-Mar-08, to lugnet.robotics.rcx)
 
  advice on what Mindstorms book(s) I should consider buying
 
I own a RIS 2.0 and an Ultimate Accessory Kit (with the remote control) along with a large collection of technic (such as 8448, 8466, 8431 and more) and would like recommendations from people here as to books that would be good to buy to expand my (...) (16 years ago, 27-Mar-08, to lugnet.robotics.rcx)
 
  FW: light active mode vs inactive mode
 
I am attempting to turn the reflective light on and off periodically. It works fine in RobotC. However, in Robolab, once it is turned off (via the robolab light sensor initialization - set the light on to "false"), it won't turn on again during (...) (16 years ago, 18-Mar-08, to lugnet.robotics.rcx.robolab)
 
  Re: BricxCC-brickOS (bash) interoperability problems
 
(...) That is how BricxCC executes the command. I have already implemented the fix and it will be in the next BricxCC test release and, subsequently, in the next BricxCC official release. John Hansen (16 years ago, 20-Feb-08, to lugnet.robotics.rcx)
 
  Re: BricxCC-brickOS (bash) interoperability problems
 
(...) Yes, I have verified that removing the end of line char in the command line, the old bash is also working normaly. To test that I am executing the following in a windows command terminal: D:>bash file.cmd I am not sure if BricxCC is executing (...) (16 years ago, 20-Feb-08, to lugnet.robotics.rcx)
 
  LDCC control from PC
 
Hello people, I got a bit tired of compiling and uploading programs to a second RCX every time I need to make a small change (ok, adding the possibility to do adjustments with the remote control helps a bit), so I decided to make a win-program that (...) (16 years ago, 19-Feb-08, to lugnet.trains, lugnet.robotics.rcx, FTX)
 
  Re: BricxCC-brickOS (bash) interoperability problems
 
(...) Thank you very much for investigating this problem. I looked into it a while back and was very puzzled as to why it no longer worked after I upgraded my cygwin install. If I delete the EOL at the end of the command line it will work? (...) I (...) (16 years ago, 19-Feb-08, to lugnet.robotics.rcx)
 
  BricxCC-brickOS (bash) interoperability problems
 
Hi all. I am using BicxCC versión 3.3.7.17 with my RCX and brickOS. Recently I have updated my cygwin versión and now I am experiencing problems: I got the following general error trying to compile: "Compile Failed Unknown GNU error code (-1)" After (...) (16 years ago, 17-Feb-08, to lugnet.robotics.rcx)


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