Subject:
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FW: Several RCX/Mac Q's
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 4 Mar 1999 10:36:39 GMT
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Original-From:
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kengu@credo.ieANTISPAM
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Viewed:
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2435 times
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this needed sending to the list...
# -----Original Message-----
# From: rkippenhan@transactor.net
# Sent: mercredi 3 mars 1999 18:01
# To: Ken Guest; hchea@ramapo.edu
# Subject: RE: Several RCX/Mac Q's
#
#
# --------------------------------------------------------------
# --------------
#
#
# I'd have to echo ken's comments. Dave Baum's site is pretty
# much *the*
# starting place for RCX/Mac work.
#
#
# Nobody has yet been able to use the native IR port on the Mac. Palm
# Pilots and a couple universal remotes, yes. From an earlier post on
# this group:
# Good point, I also had the brief idea to construct something like a
# IR-mirror
# which scatters the IR but with only 2 motors the mechanics become a
# nightmare.
#
#
# I looked into the palm III and its actually more difficult than
# initially
# thought:
# Lego is transmitting data with the help of a carrier
# frequency, meaning
# a bit is
# signaled by the existence/absence of 1/2400 sec of 38.4khz IR bursts.
# Palm
# however is using IrDA which works with timed IR pulses only and there
# seems to
# be a pulse length limiter built into the PalmIII sending HW.
#
#
# The solution as demonstrated by Remote for PalmIII seems to
# be the IrDA
# sampling
# of the lego bursts as bytes and translating these into bits. Meaning
# reading the
# Logo bits as IrDA bytes (of a higher frequency) and then
# assembling the
# Lego
# bytes out of a series of IrDA data. For that, one has to
# circumvent the
# std IrDA
# framing (leading byte, trailing byte and CRC checksum).
#
#
# I am actually talking to the developer of Remote for PalmIII
# and in the
# next
# version there seems to be a library which does this nasty translation
# for you.
#
#
# I will post my experience on the news group while I am going
# forward on
# this.
#
#
# Cheers
# Reimer
#
#
# Have Fun!
#
#
# Roland
#
#
# >-----Original Message-----
# >From: kengu@credo.ie [SMTP:kengu@credo.ie]
# >Sent: Wednesday, March 03, 1999 12:54 AM
# >To: hchea@ramapo.edu; lego-robotics@crynwr.com
# >Subject: RE: Several RCX/Mac Q's
# >
# ># From: hchea@ramapo.edu
# ># Sent: mercredi 3 mars 1999 07:41
# ># To: lego-robotics@crynwr.com
# ># Subject: Several RCX/Mac Q's
# ># --------------
# ># Hi All,
# ># I just signed onto this list. I got a mindstorms kit
# yesterday, but
# ># have not had the chance to try using it because I don't
# have a wintel
# ># box. Actually, I bought the box for the raw materials used for a
# ># physics project that my team is presenting to the
# Smithsonian Museum
# ># next week. As compensation, I get to keep the unused legos (cool).
# ># For a person with some knowledge in c++, applescript,
# hypercard,logo,
# ># and basic, what compiler would you recommend for a Mac user?
# ># Where can
# ># I find this compiler?
# ># Has anybody been able to try using the Apple IRTalk port
# ># commonly found
# ># on Powerbooks to talk to the RCX?
# ># What kind of power supply should I use to power up my
# RCX--one sold by
# ># Lego, or one from Radio Shack? What voltage should I use?
# ># Thanks for your replies!
# >
# >I'd recommendd that you visit
http://www.enteract.com/~dbaum/lego/nqc/
and
> download NQC ("Not Quite C"), as the name suggests it's similar to
> C, but not quite - I doubt that you will have any problems with it.
> The documentation there suggests using either the modem or printer port • - it
> says nothing about IRTalk though.
> I'm using a bog standard power adapter at about 12v or 9v for powering
> my RCX, it hasn't blown up on me yet!
>
> --
*****************************************************
Ken Guest
Credo Group Limited
Tel: +353-1-6310200 (New Number)
Fax: +353-1-6310300 (New Number)
Internet Address: kengu@credo.ie
Home Page: http://www.credo.ie
"THE VIEWS AND OPINIONS EXPRESSED IN THIS E-MAIL
MESSAGE ARE THE SENDER'S OWN AND DO NOT NECESSARILY
REPRESENT THE VIEWS AND THE OPINIONS OF CREDO GROUP
LIMITED OR ITS PARENT COMPANY"
*****************************************************
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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