My first published scope clock, you've seen it before
http://www.sgitheach.org.uk/scope1.html
pixel based just using two DACs to position the beam. Bresenham's
algorithm to draw the lines. Display is 64 x 64 pixels on the 1" tube.
To move forward I would certainly now use sine/cosine drawing. I store
the words in an external eeprom, in the future I'm planning on using a
SD card.
Grahame
On 18/04/2015 15:14, John Rehwinkel wrote:
On Apr 16, 2015, at 9:26 AM, Grahame Marsh <grahame.ma...@googlemail.com> wrote:
FLW on a 1" CRT is easy
<fbjfbgje.jpg>
And on a 3" CRT, 6 letters (or more) is practicable. To get nicely formed
letters I'm using the sine/cosine drawing method (i.e. David Forbes scope clock).
I'm guessing the letters in the picture of the 1" tube are not formed by
sine/cosine. Raster, maybe? Can you share some details?
- John
--
You received this message because you are subscribed to the Google Groups
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to neonixie-l+unsubscr...@googlegroups.com.
To post to this group, send an email to neonixie-l@googlegroups.com.
To view this discussion on the web, visit
https://groups.google.com/d/msgid/neonixie-l/55326CC5.8000005%40googlemail.com.
For more options, visit https://groups.google.com/d/optout.
