9 Mar
2005
9 Mar
'05
1:09 a.m.
Hi,
Ethan Dicks said:
On Tue, 08 Mar 2005 19:22:35 -0700, woodelf
<bfranchuk at jetnet.ab.ca> wrote:
They _were_ expensive back then, being a hardware type I built my own
about 25 years ago. It divided the 50Hz mains frequency down to 1 Hz
and fed that to a pair of bcd counters with the count set by thumb-wheel
switches (with a red led to illuminate them...). It's still in use
controlling my Americam-made Omega emlarger of the same vintage.
--
Cheers,
Stan Barr stanb at dial.pipex.com
The future was never like this!
Well this looks snazzy ... On topic too...
'Dark room timer'
> http://artm-friends.at/rm/foto/duka.html
Is that an Intercept Jr? Sure looks like it. Handy that LEDs don't
fog paper. :-)
It reminds me of an article I saw, with software, for hanging a relay
off of the Q-line of an 1802 on an original PopTronics Elf for use as
an enlarger timer. You set the time on the toggles, fired up the CPU,
and used the IN button to fire the enlarger for a preset number of
seconds.
Given how much enlarger timers were 30 years ago, this was an
effective use of a $100 computer. Kinda still is.