27 Nov
2007
27 Nov
'07
9:05 a.m.
On Monday 26 November 2007 18:39, Tony Duell wrote:
Incidentally, remember those little 4-pen plotters
that Radio Shack used
in the CGP115, Commoodore used in the 1520, etc, etc, etc. The pen
up/down solenoid in those is magnetically-latched. A pulse of one
polarity puts the pane on to the paper, a pulse of the other polarity
lifts it off again.
Speaking of those, I have somewhere one of those that is branded IBM. It's
missing a power supply, and the connector where said supply goes in is a bit
odd, not something I recall ever seeing anywhere else. Anybody know where I
might pursue some info on that thing? I'm thinking that at worst I can
probably hard-wire something into it...
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin