RS232 Break to Toggled relay circuit

[David Wilbourn]

Help Wanted!
Though competent with a soldering iron, I remember just enough electronics
from college to know I would be dangerous designing a circuit myself.....
I need a simple circuit that can monitor the RS232 output from a Palm PDA
for Break signals. When a break is detected a small signal relay will be
toggled. The relay will be used to switch the connection between 2 serial
devices connected to the Palm. It needs to run of 5v.
I have found the ELM626 IC (from www.elmelectronics.com) that detects the
Break signal but I need to convert that to the toggled signal. Can anyone
help me with a simple drawing and component list?

Thanks in advance for any help.
D. Wilbourn

 

[Terry Pinnell]

"David Wilbourn" <dwilbourn@tiscali.nl> wrote:

Help Wanted!
Though competent with a soldering iron, I remember just enough electronics
from college to know I would be dangerous designing a circuit myself.....
I need a simple circuit that can monitor the RS232 output from a Palm PDA
for Break signals. When a break is detected a small signal relay will be
toggled. The relay will be used to switch the connection between 2 serial
devices connected to the Palm. It needs to run of 5v.
I have found the ELM626 IC (from www.elmelectronics.com) that detects the
Break signal but I need to convert that to the toggled signal. Can anyone
help me with a simple drawing and component list?

Thanks in advance for any help.
D. Wilbourn

This should do it:
http://www.terrypin.dial.pipex.com/Images/RelayToggling.gif

--
Terry Pinnell
Hobbyist, West Sussex, UK