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Subject: 
Re: Questions about unoficial (?) use of electrical LEGO parts
Newsgroups: 
lugnet.robotics
Date: 
Wed, 1 Mar 2000 10:29:19 GMT
Original-From: 
Marco C. <marco@ANTISPAMsoporcel.pt>
Viewed: 
602 times
  
At 19:19 29-02-2000 +0100, Thomas Christiansen wrote:
I wouldn't advice you to connect the Cybermaster directly to the RCX,
you should use an optocoupler or similar...

Hi Thomas :)

hmmm... well, I always thought so, but thinking something along the lines of:

"Well, LEGO's for Kids, and kids make mistakes (adults too, eheh), so
wouldn't LEGO prepare the INPUT's to withstand a "mistake" of such a
connection ?"

John has the some opinion:

At 13:38 29-02-2000 +0000, John Barnes wrote:
Hi !

My impression would be that the engineers at Lego would design the
input circuitry in the RCX to be very robust. Since the the input swings
upto 8 volts anyhow during the power phase, I would not expect damage
to occur if you connect an output to an input. I'm sure one of the
first things the Lego quality people did was connect a Lego wire from
an output to an input, when they were validating the RCX design.

I'd say try it.

I'm sure the nice customer service people at Lego will give you another
RCX brick if you pop it. There have been lots of reports of replacement
pneumatic parts and notors. Haven't heard of a RCX problem. That makes
me think they must be pretty robust.

By the way, we are working on a RCX multiplexor which gives you six
motors and nine sensor inputs! So all is not lost!
GREAT! :D


Oh well... I was hoping that someone already "tested" this type of
connection, on purpose or by mistake ;)

I'm not going to be the first to try it on my little old CyberMaster :(

Thxs all :)
____________________
Marco C. aka McViper



Message is in Reply To:
  Questions about unoficial (?) use of electrical LEGO parts
 
Well, before I go ahead and try it, I would like to get some feedback on the following (some naive) questions: 1) Is there any risk of damaging the Fiber Optic Light Unit (#6637) if I connect it to a pBrick (RCX, CiberMaster, etc) OUTPUT port ? 2) (...) (24 years ago, 29-Feb-00, to lugnet.robotics)

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