Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I have got to the end of the road with this plotter.

I have made a few test cables, I have bought a rs232 dongle with LEDS
in so I can see whats going on, and I can see the data light flash
when I hold a key down in hyperterminal.

I have tried 3 wires, which is fine for pc, i have connected the
handshake pins back to themselves (6,8,20) (4,5) at the plotter end.

It echos nothing back, I can drive the pen aorund with the arrow keys
on the plotters front panel but I see nothing out the serial port,
maybe I should, maybe I shouldnt.

I know it works as when I bought it I held down a key(or 2) and it was
off drawing a self test on the bed without paper in, I cant do that
now I cant remember how I did it!

But if I interrupt the travel of the pen, it stops and flashes the
error light, so all self tests seem fine.


So last thing I can think to do is to 'copy' a genuine 'cpgl' or
'ccgl' file to com1:

Has anyone got such a file, just to plot a square or triangle, nothing huge etc.

--

Lez