 | | Re: Pneumatic Quadraped 242
|
|
(...) Thanks Eric! (...) Sure! (...) I just ordered up 20 small pistons to make one that is faster. I should add head and tail. I wonder if a tail and a head can be articulated so I can reduce foot side. (...) Thanks Eric. (...) Very cool Eric! (...) (22 years ago, 27-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics, FTX)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) It really is. I do think somebody made a mistake specific to the rotation sensor, though. I haven't decided yet whether it's the firmware, the sensor, or just the overall mechanism. I can understand how it got past quality control - sometimes (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) Unfortunately, I fear the comparison is all too true! So, is my robot going to blow up? ;) (...) I'd appreciate some specifics. So far, I have not been able to find a way to do this in Robolab. I wrote some code to test raw sensor values and (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Pneumatic Quadraped 242
|
|
(...) Perfect! (...) Way to go! (...) (URL) Facinating! (...) Intense! (...) Can I build a Mecha Sheith for it? An outer skin? Can I can I! Question: Any entertainment for a Tail of some sort to study the effect during articulation? Nice work. e (...) (22 years ago, 27-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics, FTX)
|
| |
| | Re: multiple motors
|
|
(...) hmm. see rule #1: (URL) my BIGGEST piece of advice for your sumo robot: make SURE it does not leave the sumo area on it's own." :) Steve (22 years ago, 27-Nov-03, to lugnet.robotics.rcx)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
OK You do something great, and all the world is looking at it, finding the finest detail one could have made much better. That's the power of internet-exchange. Don't take this personally. I only wanted to remind the great job they did at LEGO's (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) Please don't take my post as a criticism of the original firmware, I merely wanted to point out alternatives. I agree, the 3ms sample rate is more than adequate for most applications. (...) Yes, the RCX is rugged in many respects, but I think (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) We should not forget that the RCX has initially been designed for kids. So the standard firmware should be considered according to the initial aims, which were to provide a really great tool - toy for children. Therefore the firmware designers (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | External Power Supply
|
|
Hi ! I also have already used an external power supply for my RCX, which was a battery pack of 7 cells (8,4 V) with 2Ah each. It worked quite well but from one day to the another my RCX didn't word any more. I haven't found out jet, why my RCX (...) (22 years ago, 27-Nov-03, to lugnet.robotics)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) By contrast, BrickOS continuously samples each sensor at a rate of about 6.7 samples per millisecond. This is 20 times more often than the standard firmware. It's no wonder it's more accurate at higher rotation rates. Of course, it also (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
---...--->snip (...) Welcome to LEGO Mindstorms robotics: do great things in real world with imperfect tools and objects. That's what makes it so interesting. It's always the Apollo 13 challenge: "Here guys, that's what they have on bord! Come on (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) That may be another problem to be solved; haven't got there yet because simply counting rotations has been unreliable. I mean with a motor shaft connected to a rotation sensor - no wheels, no robot! Can't even count rotations correctly. (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) I tend to think that positionning errors are more a problem of slip/skid than a problem of lost counts... Philo (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
Thanks for the response. (...) It seems to me it's a design flaw in the entire method of counting rotations, which relies on the theoretical ideal of "instantaneous" voltage changes, which can't be produced. You can't go from 2V to 5V without (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) Yes, I did read your information. It was very helpful - the best stuff I found on the subject. But as you said, modifying the sensor would probably disqualify. But, that does make me think again about the recent unavailability of the part . . (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: multiple motors
|
|
(...) Rather well... (...) ...but it was beaten by a simpler but slightly heavier 'bot! And it sometimes committed suicide too :-(( Philo (22 years ago, 27-Nov-03, to lugnet.robotics.rcx)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
"Don Stauffer" <BrainChild@Skyler.com> wrote in message news:Hoz4Gp.1zto@lugnet.com... (...) <<SNIP>> (...) The rotation sensor bad counts cannot be fixed at the byte-code level. The problem is "native" to implementation in the underlying firmware (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | !!!!!!REMOVE!!!!!!!
|
|
Please remove this email address from all you email lists. -----Ursprungligt meddelande----- Från: Alex Jayasundara [mailto:AJayasundara@onfin.com] Skickat: den 24 november 2003 18:25 Till: Ruth; lego-robotics@crynwr.com Ämne: Re: HELP, please! USB (...) (22 years ago, 27-Nov-03, to lugnet.robotics)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
Hello Don, Did you had a look to my analysis of this problem ((URL) But unfortunately I don't think that my modification is "competition-legal"... I agree that sampling can occur at the wrong time, but this should not occur more often at low (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
| |
| | Re: Robolab, byte codes and assembler
|
|
(...) I've used some of the LabView features, though it seems like they work best when used on constants, rather than variables or containers. My impression, though, is that the non-Robolab-specific LabView features aren't what I'm looking for (...) (22 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
|
