Robotics : 19801


Robotics / 19801	19800 \| 19802

Subject:	Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
Newsgroups:	lugnet.robotics
Date:	Wed, 18 Dec 2002 00:59:39 GMT
Viewed:	963 times

In lugnet.robotics, Steve Baker <sjbaker1@airmail.net> writes: > Roy Nelson wrote: > > To add to Stephane question: > > > > Are there any hardware differences between between the 2.0, 1.5, and 1.0 > > versions of the RCX brick? Has anyone noticed any performance differences? > > The only difference is that the 1.0 brick has an external power connector > so you can save batteries while testing by plugging in an external mains > adaptor. > > In all other respects, the three bricks are identical. Actually I've noticed that the 2.0 brick's IR capabilities don't seem to be as strong as the 1.0/1.5 bricks. I don't know why this would be, if something got changed in the hardware? It isn't an issue for most things, but if you want bricks talking to each other, and need them to talk across a room, this might be an issue. Can anyone confirm this with some sort of laboratory test? (Using an IR photon counter, or something? :-) -- David Schilling

Message has 3 Replies:

		Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
I have one of each RCX (1.0, 1.5 , 2.0) and have tested the signals using a palm app called IRMonitor with little or no difference between the three. This is by no means a "labratory test". Haveyou noticed this with more than one brick? For the (...) (22 years ago, 18-Dec-02, to lugnet.robotics)

		Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
I have not performed any tests, but if you go in configuration panel, you will see that the USB tower can't be put in long range mode if it is placed behind a passive (non powered) USB hub. That may also be the case for low power laptop usb ports. (...) (22 years ago, 18-Dec-02, to lugnet.robotics)

		Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
I have observed a bit of sloppiness in the manufacture of the RCX's such that, in some cases, the IR diodes aren't mounted perfectly horizontally, they may be at an angle which will affect the apparent range. Opening the case and re-aligning the (...) (22 years ago, 20-Dec-02, to lugnet.robotics)

Message is in Reply To:

		Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
(...) The only difference is that the 1.0 brick has an external power connector so you can save batteries while testing by plugging in an external mains adaptor. In all other respects, the three bricks are identical. (...) Yes. My 1.0 brick runs 2.0 (...) (22 years ago, 17-Dec-02, to lugnet.robotics)

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