 | | Re: Gray code vs. Binary
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(...) Haha! I've found a better way to do it, and a better drawing :-) Take my Pick and Place robot circuit: (URL) out the Elbow pistons and switch and connect the Elbow piston inputs to the Wrist piston instead (effectively draw the horozontal (...) (19 years ago, 20-Oct-05, to lugnet.technic)
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| | Re: Gray code vs. Binary
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(...) Hi Mark, You are right. I've had the wrong term in my head all this time. Gray code is not what I was thinking about I guess...... I'll have to go study Gray code better, and then study your descriptions. Man I wish you had a scanner and could (...) (19 years ago, 20-Oct-05, to lugnet.technic)
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| | Re: Gray code vs. Binary
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(...) Hi Kev, I think the cheapest way to do 3 or 4-bit binary with pneumatics would be to use gray code and convert it. Gray code always changes the least significant bit possible in order to achieve a change to a new state, so there will always be (...) (19 years ago, 20-Oct-05, to lugnet.technic)
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| | Re: Idea Books 8888 and 8889
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When I was approx. 16 years, I built (URL) this> (book 8889, pages 38-41). Lousy picture, I know (my dad didn't want me to take a picture myself). Trying to rebuild something without building instructions was always more challenging... ;-) If I (...) (19 years ago, 20-Oct-05, to lugnet.technic, FTX)
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| | Gray code vs. Binary
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To all those pneumatic gurus..... The classic pneumatic timing circuit made with one switch per piston changes state following gray code (i.e. only one piston changes at a time). This means that a two piston timer goes through these states: (...) (19 years ago, 20-Oct-05, to lugnet.technic)
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| | Re: Idea Books 8888 and 8889
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(...) I really wanted to use the 4.5V motor from [LEGOSet 8700] since the motor is near-identical to 870's, but the battery box from that set is cylindrical and very long, so it's doubtful I could make it fit in there. However, if I decide to use 9V (...) (19 years ago, 20-Oct-05, to lugnet.technic, FTX)
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| | Re: Idea Books 8888 and 8889
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From memory the crane was a bit of a clunker with 4.5v. Let us know how it goes with 9volts in the back ! Steve (19 years ago, 20-Oct-05, to lugnet.technic)
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| | Re: High Failure Rate of New Type 9V Geared Motor
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(...) Thanks! No, these motors were only used for FLL type challenges, not in fast RC cars. I can submit the bad motors for *CSI* and 'autopsy' if need be. C S Soh (19 years ago, 20-Oct-05, to lugnet.robotics, lugnet.technic)
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| | Idea Books 8888 and 8889
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I recently acquired the two first Technic Idea books. The pictures included leave me hungry for more. Is there anyone here who has built the larger models AND took some pictures of them ? I would be anxious to see them (and any variation made to (...) (19 years ago, 20-Oct-05, to lugnet.technic)
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| | Reliable Switch Point Control with Pneumatics
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Here's a reliable scheme for controlling unmodified switch points with pneumatics. This scheme is for use on track that is raised up off the baseplate in modules. I have reduced the depth required below the track to a minimum of 9 plates in the (...) (19 years ago, 19-Oct-05, to lugnet.trains, lugnet.technic, lugnet.loc.uk, lugnet.build, lugnet.announce.moc) !
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| | gearbox pack 673F - any use for it?
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The gearbox pack 673F is now on sale at half-price at S@H (URL) there a good use for it? I could use it as a motor, except I can't tell how it's powered (how many volts, nature of connection). If it only works connected to another RC motor, then it (...) (19 years ago, 19-Oct-05, to lugnet.technic)
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| | Re: Pictures of New technique: Cascaded Trinary Pneumatics (aka mid-stop)
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(...) I'll start a schematic next week as this week is an unusual week at work. That should cover the pneumatic circuit. Basically, each stage gets a feed from the compressor, which goes to the middles of the two switches that drive the next stage (...) (19 years ago, 17-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: High Failure Rate of New Type 9V Geared Motor
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(...) I had the same problem with one of mine. Using them in a fast RC car might do this if it gets slammed into something. I will inform Nathanael Kuipers of the problem since he works at TLC and can tell the proper person. (19 years ago, 17-Oct-05, to lugnet.robotics, lugnet.technic)
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| | Re: Road Grader
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(...) Hi Vineet! The model is 80% done and I have run out of yellow studs. Here is Saturday's link- (URL) may decide to make it with a black stripe down the side which would utilize the large supply of black studs I have. Since I never make (...) (19 years ago, 17-Oct-05, to lugnet.technic)
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| | Crane MOC made during boredom
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Hey all, thought I'd share my little crane MOC. It's a custom base with two new 9v geared motors used to drive each track through the following gears: 24 tooth crown on motor 24 tooth 8 tooth 8 tooth 24 tooth 8 tooth 24 tooth 40 tooth driving treads (...) (19 years ago, 17-Oct-05, to lugnet.technic)
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| | Problem registering on BZPower
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I tried to create an account on BZPower a couple of days ago. I never recieved a confirmation e-mail but have managed to logon using the details I entered (username talltim) but I then can't use most functions such as posting or looking up members. (...) (19 years ago, 17-Oct-05, to lugnet.technic.bionicle)
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| | High Failure Rate of New Type 9V Geared Motor
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Bad tidings! I'm experiencing a rather high failure rate with the new type 9V geared motor (#43362). This motor has been discussed before ((URL) motor can be easily recognised: when you twirl the shaft it turns very little and quickly comes to a (...) (19 years ago, 17-Oct-05, to lugnet.robotics, lugnet.technic)
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| | Re: Road Grader
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Nate- Compliments go out to the design of the grader! I like the way you used the pneumatics in the front steering (I guess I was wrong about the length of the piston arm!). On your other creation, the road scraper, do you also plan to use (...) (19 years ago, 16-Oct-05, to lugnet.technic)
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| | Re: Pictures of New technique: Cascaded Trinary Pneumatics (aka mid-stop)
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In lugnet.technic, Mark Bellis wrote: <snip> (...) Mark, I've tried to study the pictures, but I cannot resolve the mechanical linkages, and/or the pneumatic hookups. I was going to try to draw up a schematic, but I just can't resolve the images. (...) (19 years ago, 16-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Bionicle Muaka and Kane-ra 8538 instructions scans needed
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Hi. I recently bought a used dusty set 8538 ( Muaka and Kane-ra) (URL) There were no instructions, as often happens when buying used sets. I could not find instruction scans neither on Peeron (URL) nor on (URL) There are sets of the same (...) (19 years ago, 16-Oct-05, to lugnet.technic)
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