[OZAPRS] RS232 sniffer

[David Hopkins]

Andrew,
Check out what is available in the shops. Making one is a lot of 
work. I have one that has a led on 9 lines and it came from Dick 
Smith in the days when it was an electronics store.

I also obtained a break out box that has a pin and switch for every 
pin on a DB25 connector. I don't recall where I obtained it from.

To do it properly would require a considerable mechanical effort.

David


At 09:19 AM 16/02/2008, you wrote:

>Hi,
>
>I am thinking of putting together an RS232 sniffer for the shack.
>
>Pretty simple, just some LED's for activity.
>
>What would be the best way ?
>
>Can compartors be used to show activity ? I am looking for lots of them ,
>hence lots of pins to watch.
>
>We have break out boxes, but they never really seem to have all the
>connections we want, for a CRO etc
>
>Ideas ?
>
>A circuit to switch on with a +1.2 or greater volts
>
>Not sure what to do about the -ve swing. or even bother - activity is the
>aim.
>
>MAX232 only has 1/2 in it what I want to do
>
>-------------------------------------------------------------------------
---
>Andrew Rich VK4TEC
>vk4tec at people.net.au
>http://www.tech-software.net
>
>
>_______________________________________________
>Ozaprs mailing list
>Ozaprs at aprs.net.au
>http://aprs.net.au/mailman/listinfo/ozaprs
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Free Edition.
>Version: 7.5.516 / Virus Database: 269.20.6/1282 - Release Date: 
>15/02/2008 7:08 PM

David G. Hopkins (Vk4ZF)
CAPALABA QLD.
AUSTRALIA
S27 32.191 E153 11.867 


-- 
No virus found in this outgoing message.
Checked by AVG Free Edition. 
Version: 7.5.516 / Virus Database: 269.20.6/1282 - Release Date:
15/02/2008 7:08 PM


_______________________________________________
Ozaprs mailing list
Ozaprs at aprs.net.au
http://aprs.net.au/mailman/listinfo/ozaprs