Subject:
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Re: Lego de-lurks!
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 12 Dec 1999 17:04:34 GMT
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Original-From:
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Pink Tail <pinkmice@!stopspammers!borg.com>
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Viewed:
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582 times
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Hi !
Increased sensor/motor I/O is a must and do-able. RF would be
great, and I don't understand why Cybermaster is RF and the RCX
is IR.
As far as the sensors are concerned, having been working away on a
range of such devices, I am most noticably struck by how much they
cost (just at the component level) in comparison to what Lego costs.
So I applaud your list, but I doubt the engineers at lego will have the
freedom to design and build $50 sensors. So its back to the soldering
iron and dremel tool for me!
JB
----- Original Message -----
From: Roger Hamlett <roger@ttelmah.demon.co.uk>
To: <lego-robotics@crynwr.com>
Sent: Saturday, December 11, 1999 5:40 PM
Subject: Re: Lego de-lurks!
> In lugnet.robotics, "Marco C." <marco@soporcel.pt> writes:
> > WOW! YEAH! :)
> > Is there a page with an organized Lego pBrick related wish list ?
> >
> > Ok, let's see my wish list:
> >
> > 1) A SuperRCX with *at leat* 6 sensor ports, at least 4 motors, a
> > rechargeable battery through a it's own power port and RF antenas for PC
> > comms together with IR for inter-RCX's comms *or*
> >
> > 2) A CyberMaster<->RCX proper *comunication* interface, at least one that
> > could transmit/receive a value other than the light->lightsensor's
> > on(1)/off(0) values (I know, I know, it's possible to do a soft routine • for
> > serial comunication of >1 values)
> >
> > 3) LEGO Technic 9v Light brick (er... is this already available ?)
> >
> > 4) MORE Sensor's !!! :) (er... a GPS sensor is out of the question ? • ehehe)
> Well not much use given the limited accuracy of GPS over a small area.
>
> > 4.1) Compass Sensor ?
> Most of the compass sensors draw too much current. However it should be
> possible to do something.
>
> > 4.2) A compact *small* analogue-like Tilt Sensor (0 to 100% values)
> This is possible. I am having thoughts...
>
> > 4.3) Compact Ultrasonic range finder
> > (check John Barnes's http://www.plazaearth.com/usr/gasperi/ultra.htm)
> The problem is that the actual ultrasonic transducers 'limit' the minimum • size
> this can go to... I am just laying out a PCB for a 'variant' of this unit • (I
> use a variable current source to return the data, rather than the voltage
> source used by most people - requires one more transistor, but reduces • current
> demand by a noticeable amount - however the unit is still going to have to • be
> a couple of bricks 'high', just to get the transducers in.
>
> > 4.4) What about a magnetic sens... HEY!!! THAT'S IT! ...now I have
> > something for my LegoBot to search (simulating food)! I'll do a magnetic
> > sensor out of a TouchSensor and a magnet! Yes! (Has anyone done this • before ?)
> I have been trying to do an inductive sensor that will follow a wire • carrying
> a particular signal.
>
> > Ok, for Video/Audio "sensor" there's the X10 wireless color Cam thing :)
> > (well, a smaller 9v Audio/Video Sender would be nice)
> I could add a few more. Genuine 'light', rather than covering the brick. A
> full 'line track' sensor (I have a couple of quite good prototypes of • this).
> Lots of ideas...
>
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Message has 1 Reply:
 | | Re: Lego de-lurks!
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| (...) Very true, though prices drop sharply with quantity. One sensor I use, is nearly 50$ in 'one off' quantities, but if you but 10000, this drops to under ten dollars. Makes rather a difference to the potential market. It is sometimes difficult (...) (25 years ago, 12-Dec-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Lego de-lurks!
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| (...) Well not much use given the limited accuracy of GPS over a small area. (...) Most of the compass sensors draw too much current. However it should be possible to do something. (...) This is possible. I am having thoughts... (...) this can go (...) (25 years ago, 11-Dec-99, to lugnet.robotics)
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