 | | Re: EGAD! (pneumatics)
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(...) When using LEGO's firmware and NQC the maximum number of power levels you have is 8 (plus off?), so the most you can identiy is 9. This of course presumes that current draw by your compressor's motors doesn't mess with the voltage going into (...) (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Blacktronicle II: Bohrokitron
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After building the first one, I couldn't resist making one using the Bohrok frame, since I already knew it was possible. I borrowed the basic concept from Paul Coombs' Gremlin, but the construction is completely original, though it borrows a bit (...) (21 years ago, 16-Jun-03, to lugnet.technic.bionicle, lugnet.announce.moc, lugnet.build.mecha, lugnet.space, FTX)
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| | Re: spider walker
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(...) Now if it could only turn corners.... BTW, those Brickshelf URLs (with ?i=xxx) are not available until after moderation either - you need to link one level deeper, like you did with the MPG URL. Regards ROSCO (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.build, lugnet.starwars)
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| | Re: All-Out Lego Drag Racing
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(...) Heh... you haven't seen the size of my rubber bands. (evil grin) For the speed I can get on small LEGO vehicles, let's just say that it's not entirely safe for me to launch them indoors. I can pretty much guarantee that a simple and light (...) (21 years ago, 16-Jun-03, to lugnet.technic)
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| | Re: EGAD! (pneumatics)
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(...) I was thinking that one could just use an ADC to directly convert the analog voltage level to a digital number of however many bits you could resolve it to and then taking that binary number to address a demux and have the demux's outputs (...) (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: All-Out Lego Drag Racing
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(...) I dunno - I reckon the RC motors from 8475 would do pretty well against rubber bands ;) ROSCO (21 years ago, 16-Jun-03, to lugnet.technic)
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| | Re: All-Out Lego Drag Racing
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(...) What sort of rules did you have in mind? BTW, if all you're concerned about is speed, by far the fastest racers would be ones that would be powered by elastic bands, and not electric motors at all. Motors and battery packs just add too much (...) (21 years ago, 16-Jun-03, to lugnet.technic)
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| | All-Out Lego Drag Racing
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Would anyone be interested in a LEGO drag racing competition? I don't have anything firm on paper right now, but I do have ideas. I think that it would be limited to four motors, but it would not be a robotics drag race, just an all out race to the (...) (21 years ago, 16-Jun-03, to lugnet.technic, FTX)
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| | Re: EGAD! (pneumatics)
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(...) Wow, that'll be great! (...) Keep at it. (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: MOC - Small Pneumatic Biped Walker
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(...) Thanks Paul! You are always so kind. The pneumatic control circuit is similar to one found in a two double acting cylinder engine, except slightly different. It makes the walking pace more even from side to side. (...) Kevin (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: MOC - Small Pneumatic Biped Walker
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(...) What can I say? Yet another amazing creation. You have a pneumatic control circuit in there somewhere, I think. I know what you mean about the small pneumatic cylinders needing such high pressure to move a switch. The engine I built following (...) (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: 2003 Technic sets appear to be released...
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(...) I don't mean to be rude but have you checked out this topic: (URL) M. (21 years ago, 15-Jun-03, to lugnet.technic)
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| | MOC - Small Pneumatic Biped Walker
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The other day I was given a challenge to make a small biped using small pneumatic pistons. Normally I don't use small pistons in combinations with switches, because the pressure must be increadibly high for a small piston to flip a pneumatic switch (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | spider walker
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I've had this wind-up mechanical spider for so long that I no longer remembered what it was called. I've always been fascinated with how it moved and wanted to recreate it with LEGO. It's been a fun project, and many challenges were overcome in (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.build, lugnet.starwars, lugnet.announce.moc)
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| | 2003 Technic sets appear to be released...
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I just went to the Lego S@H website and there are a number of new Technic sets there. In particular, the ten-piston 8455 Backhoe set is finally out and at $100 for all those pneumatics it is quite a deal too. I'm going to order some of this stuff (...) (21 years ago, 15-Jun-03, to lugnet.technic)
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| | Re: EGAD! (pneumatics)
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(...) You are doing well Mark. You can use three voltage comparators to detect which voltage level is being output. What you need is three comparators. One for 25%, then 50%, and 75%. If 75% is on, then you'll need to gate off the 25% and 50% (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: EGAD! (pneumatics)
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(...) Close. What I would actually be wanting is eomthing that could use the voltage level being output from a *SINGLE* RCX port to do the addressing. So for controlling up to four devices from one port, for example, would require that 25% power to (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: Building instructions for reversible, variable speed (barely) pneumatic engine
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(...) Beautiful! I will be putting one of these engines on my table! Thanks Kevin. Best regards, Paul (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.cad)
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| | Re: EGAD! (pneumatics)
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(...) Is this what you're looking for? A 3/8 RCX Output Multiplexer for the FT solenoid valves: (URL) the circuit diagram is a piece of art from France :-) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: EGAD! (pneumatics)
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(...) Sweet! So with these adapters, I can use regular aquarium hoses, which can be bought for pennies a foot -- way cheaper than LEGO tubing. Elbow, tee, and cross connectors for aquarium hoses are also really cheap, and I've seen aquarium hose (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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