 | | Re: Powering motors from the mains
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In lugnet.technic, Mark Morgan writes:> (...) wanted to power, it is exactly what you need and no extra. Those 4548s turn up in the strangest places, though, so haunting old and poorly managed stores (TRU comes to mind, as Mark said!) that carried (...) (23 years ago, 17-May-02, to lugnet.technic, lugnet.robotics)
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| | Re: latest legOS strangeness
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(...) I may be wrong - 'my' RCX is actually my brother's, and is 3 hours drive away - but doesn't the remote control with the official firmware do float when buttons released, but brake if forward and reverse are pressed together? Max (23 years ago, 17-May-02, to lugnet.robotics.rcx.legos)
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| | Re: Powering motors from the mains
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(...) Thanks Larry and JB (via e-mail) I'll be following your advice. I'd always assumed the track power connection was hard-wired but this pic shows where a standard connecter attaches. (URL) the speed regulator facility might come in handy too. (...) (23 years ago, 17-May-02, to lugnet.technic, lugnet.robotics)
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| | Re: Powering motors from the mains
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(...) 4548s were 5ukp in Toysrus a while back Someone in the UK has a UK 3 pin adaptor for $5 (URL) sure you can find a UK person to trade a controller. Mark (23 years ago, 17-May-02, to lugnet.technic, lugnet.robotics)
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| | RE: Microscout assembly?
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Last night I took apart my Microscout just to see what was going on... Unfortunately, my pictures look like crap, so it'll be a few days before I post those (at least, the closeups of the guts). In the meantime, you'll have to suffer with my equally (...) (23 years ago, 17-May-02, to lugnet.robotics)
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| | Re: Part modifications
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Don't cut anything. In this exact same situation, I use a pair of medium pulley-wheels, mated together with half-pins through the six outer holes (3 in one direction, 3 in the other). There is very little grip area, but because you are right at the (...) (23 years ago, 17-May-02, to lugnet.robotics)
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| | Re: Powering motors from the mains
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(...) Purist approach is to use a 9V train speed reg and LEGO(r) wires from the speed reg to your motor(s), possibly through the polarity reverser switch to give control. The speed reg is powered from a wall wart trafo so if you buy a UK train set (...) (23 years ago, 17-May-02, to lugnet.technic, lugnet.robotics)
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| | Powering motors from the mains
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I find batteries a pain, especially as there output isn't constant over their lifetime, therefore I'd love to be able to power my motors from the mains. I'd like to know what methods their are are doing this. I'd prefer a purist option but I do know (...) (23 years ago, 17-May-02, to lugnet.technic, lugnet.robotics)
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| | Re: BrickFest 2002 Presenters Wanted
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(...) Sounds like a great line-up, I wish I could make it! Oh, well, there's always next year... ROSCO (23 years ago, 17-May-02, to lugnet.robotics, lugnet.technic)
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| | Part modifications
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Well, this is probably off-topic for this forum, but I couldn't really find a suitable one and it *does* involve Mindstorms parts, sort of. ;) The one piece that seems not to be available but always in need for me is a part with a short axle on one (...) (23 years ago, 17-May-02, to lugnet.robotics)
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| | Re: somewhat off topic, but...
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I'm NOT biased because I DIDN'T write the thing... Forth is a wonderful language that has a proven track record. I don't use it in my job simply because management has never heard about it. I don't mean to imply that languages are chosen by (...) (23 years ago, 17-May-02, to lugnet.robotics.rcx.legos)
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| | Re: latest legOS strangeness
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(...) is (...) Not really.. braking using the current generated by the motor (acting as a generator) once the power is removed from it. H-Bridge has what is called a break bit. The break bit simply shorts the two terminals on the motor together, (...) (23 years ago, 17-May-02, to lugnet.robotics.rcx.legos)
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| | Re: latest legOS strangeness
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(...) Maybe make this selectable with a build option? The bad thing about brake is that it actually draws current (=reduces battery life) ROSCO (23 years ago, 17-May-02, to lugnet.robotics.rcx.legos)
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| | Re: where buy Rot Sensor and Micro Mot in EU
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You can buy the micro motor from your local Lego Dacta distibutor. See a list here: (URL) can get the rotation sensor in the Ultimate Acessory Set (#3801), which has lots of other useful bits, including the remote control and a touch sensor. (...) (23 years ago, 16-May-02, to lugnet.robotics)
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| | Re: Microscout assembly?
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Hmm... Well, you could try www.mindstorms.com (or whatever it is) and look fo the configuration. I remember looking around that side and seeing some diagrams and shematics. I have that set too, and I have no intentions of taking it apart (lucily) (...) (23 years ago, 16-May-02, to lugnet.robotics, lugnet.robotics.microscout)
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| | Re: where buy Rot Sensor and Micro Mot in EU
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(...) If you check eBay you will find them sometimes. Do a search on 'Lego Mindstorms'. In fact, one Micro Motor just went up for auction to-day. Look here: (URL) (23 years ago, 16-May-02, to lugnet.robotics)
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| | Re: where buy Rot Sensor and Micro Mot in EU
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(...) Well, you can try www.bricklink.com . They are worldwide and are sort of like Ebay for LEGOs. Or maybe check E-Bay. They`ve got lots of LEGO's cheap. Car (23 years ago, 16-May-02, to lugnet.robotics)
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| | where buy Rot Sensor and Micro Mot in EU
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Does anybody know where I can order the Rotation Sensor (#9756) and MicroMotor (#5119) from Europe (I live in Belgium) ? I asked "Lego Direct Europe", but they claim these are not for sale separately. Many thanks ... (23 years ago, 16-May-02, to lugnet.robotics)
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| | cygwin error
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i got this error while trying to setup legOS 0.2.6 i'm running windows XP scott@FAMILYCOMPUTER /legos-0.2.6 $ make depend for i in util lib boot demo ; do make - --unix NODEPS=yes -C $i depend || exit 2 ; done make[1]: Entering directory (...) (23 years ago, 16-May-02, to lugnet.robotics.rcx.legos)
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| | Re: nqc question
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(...) I don't see how that could possibly work - where does this code turn the motor off? You need something like: task sensor_to_motor () { while ( 1 ) /* Do this forever... */ { Off ( motor ) ; /* Turn the motor off */ while ( sensor == 0 ) /* (...) (23 years ago, 16-May-02, to lugnet.robotics)
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