 | | legOS timers
|
|
Hi! Did anyone write any 'nicer' wrapper functions for handling the RCX timers? Or am I blind and can't find them? 8^) /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: Light sensors
|
|
(...) more light and is working.... Erm... it isn't really working - it exhibits the same 'inverted' behaviour, looking for a white line on a black background... /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Light sensors
|
|
Hi! Maybe this is obvious for all experienced legOS users - I am displaying the values read from the light sensor on the LCD, and I get values of ~30 for light and ~520 for darkness... This seems very strange - is it the display wrong, or are these (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: Firmware startup bug?
|
|
I have replaced my batteries without erasing the firware several times. The trick is replacing the batteries one at a time with the brick turned off. You have then several (10 or so) seconds between each replace. If you leave the brick switched on (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Firmware startup bug?
|
|
Probably related to the garbage on the lcd that you get when turning off the RCX with a sensor active: if there is a light or rotation sensor or a pressed touch sensor connected to the RCX when you download firmware legOS will crash immediately (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) That's one of the reasons I got mine. I was trying to make a simple balancer when I built the pendulum I described (with 4.5 degree accuracy). There were a lot of problems with my mechanism, but the overriding problem was that the 0 point (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) which (...) I added code to assume that 2 step transitions were 2 steps in the last known direction of travel. The results were MUCH worse than just ignoring those steps, as the current code does. This seems to suggest that the 2-step (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) I got a letter two days ago indicating that the two rotation sensors I ordered the first week in January are nicely on backorder and will ship in a month or so. This is similar to what I was told on the phone when I ordered them from Shop and (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) I tried hacking something like this into the old rotation sensor code, and it didn't go real smoothly, but is definitely a necessity (I think) if you want the sensor to handle very, very high speed apps. (...) I am. I'm almost tempted to steal (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) What exactly do you intend here, Martin? I spent quite some time working on this over the summer and in the fall, and had a great deal of problems but also some success. I'd be happy to help you out with my experiences if you have some idea (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) It is very very interesting. I have worked the last weeks evenings to discover the fault in my concept, my modell and my Software. and I have discovered, that the fault can't be on my side. I discovered that my implementation of a fake (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) Hi Ben, i think that's very interesting work you're doing, especially because i'd like to build sophisticated balancing bots, and already got 2 rotation sensors from lego world shop for this reason. I'm currently not actively working on that, (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
I put in some debug code to catch rotations which skip a state (transitions like 3->1 or 0->2) which the legOS table `diff2change' currently translates to 0 steps (because we can't be sure whether that was 2 steps forward or 2 steps back). These (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: sending keepalive... ???
|
|
Hi Rossz (...) Yes, I downloaded the legOS.srec on top of the existing Lego firmware and some programs. When you download the legOS firmware will anything currently in RAM be deleted? I'll try taking the batteries out for a while and starting again. (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
|
| |
| | Bug in WinlegOS installer
|
|
In my rush to get the package released I made "one more insignificant change". This resulted in a bad path setting being placed in the autoexec.bat file. At the end of the install skip rebooting and open autoexec.bat in the editor. The installer (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
|
| |
| | Re: more user questions
|
|
Thanks, your directions worked perfectly. (...) Originally, the line appended to autoexec.bat was (something like): set path=set path=c:\LEGOS\H8\BIN...ath%%path% which I altered to: set path=c:\LEGOS\H8\BIN...BIN;%path% (25 years ago, 26-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
|
| |
| | Re: rotation sensor mystery solved?
|
|
(...) old (...) The version I posted works with all cable lengths and battery strengths I have access to. I just extended the range of each state a bit toward the low battery end of the scale. --Ben (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
|
| |
| | Re: more user questions
|
|
A general note, there is a README.WRI file. This includes information beyond what Markus originally wrote in README. Perhaps I should have deleted his README (I include it in README.WRI, anyway). Open your copy of MAKEFILE. You'll find this line: (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
|
| |
| | Re: sending keepalive... ???
|
|
(...) If the readme file says the demo LX files are included, that is a mistake (or should I include them?). I'll have to correct it. As for your download problem, did you download the firmware first (firmdl3 legOS.srec)? LX files are relocatible (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
|
| |
| | more user questions
|
|
I too have had my problems with this system. Perhaps they come from my inexperience with LEGOS or UNIX, which doubtless is apparent in my description below: Downloading and installing went well. Then, after correcting a minor SET PATH syntax error (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
|
