A great deal of time and effort has gone into the design of this moving message display. And the end result is a very attractive proposition – in all senses of the word.
For a start, the kit price is significantly less than any
commercial product which could be classed as equivalent.
That's a welcome change – we all know that these days building
a kit can often cost as much as buying a finished product (or even more).
Second, the display looks good. It's housed in a clear acrylic
tube with a red acrylic filter and black back and end caps. This method means
the display is just as suitable for placing on a shelf or desk, hanging from a
wall or even hanging from a ceiling (see inset box).
Third, it is flexible. We have shown a "double" display – that
is, two PC boards linked together to form an 8-unit display. However, there's
nothing to stop you making a mini version with only one PC board and a 4-unit
Finally (and perhaps most importantly) the system is incredibly
easy to use. No special PC software is required – just a "dumb terminal" capable
of sending and receiving via the RS232 (serial) output.