Alt-BEAM Archive
Message #13785
To: beam@sgiblab.sgi.com
From: JVernonM@aol.com
Date: Fri, 21 Apr 2000 09:29:59 EDT
Subject: Re: PM 1
In a message dated 4/21/00 3:09:10 AM Eastern Daylight Time, clive@srv.net
writes:
> Has anyone seen a freeform layout for the PM 1 SE? I can't quite seem to
> get this one working. I've got a working BICORE and I want to use solar
> power, but for that I need a SE.
Try the Chloroplast. I've had trouble with the PM1 as well. It seems to be a
touchy circuit. I can get a PM1 to run a pager motor and Walkman motor, but
anything less efficient like a Omran ejector motor, BGMicro, or servo won't
work. I've also never got it to run a circuit like a Bicore no matter which
motors I used. The D1 and SIMD1 will run it like a charm (the old D1 much
less efficiently) but have limited uses. I haven't personally tried the
Chloroplast with a Bicore, but it should work without problems. As far as I
know, the PM1 has been used by many people to run Bicores, but I can't get
much info on their approach. Anyone want to volunteer their results?
See ya,
Jim
http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
ICQ# 55657870
13786 Fri, 21 Apr 2000 09:34:47 EDT Re: The sensitivity of a 74XX240 beam@sgiblab.sgi.com JVernonM@aol.com In a message dated 4/21/00 9:09:04 AM Eastern Daylight Time, beh01@uow.edu.au
writes:
> One thing to try is putting a small light globe (like out of a torch) in
> series with the battery when you're building the circuit.
Would this be on the positive or negative rail? Or does it matter?
See ya,
Jim
http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
ICQ# 55657870
13787 Fri, 21 Apr 2000 23:56:34 +1000 Re: The sensitivity of a 74XX240 beam@sgiblab.sgi.com "Ben Hitchcock" No matter. I use the positive, but that's just personal preference. So
long as it's in series, it should work.
Ben
----------
>From: JVernonM@aol.com
>To: beam@sgiblab.sgi.com
>Subject: Re: The sensitivity of a 74XX240
>Date: Fri, 21 Apr 2000 23:34
>
> In a message dated 4/21/00 9:09:04 AM Eastern Daylight Time, beh01@uow.edu.au
> writes:
>
>> One thing to try is putting a small light globe (like out of a torch) in
>> series with the battery when you're building the circuit.
> Would this be on the positive or negative rail? Or does it matter?
>
> See ya,
> Jim
> http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
> ICQ# 55657870
13788 Fri, 21 Apr 2000 09:37:45 -0400 silence 'bot "BEAM" "William Cox" Hey all,
I been thinking about noise cancellation. This might be an interesting
application for a robot. Silence where ever he goes. The whole principle is
that a sound wave is read inverted and piped back out to give silence. What
circuitry would I use to do this? I don't think a regular inverter would
work right, 'cause it only trigger at a certain point. How do I get full
inversion?
-William
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