Matronics Email Lists :: View topic - One to Many

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

One to Many - Serial connections

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

aadamson(at)highrf.com
Guest

Posted: Fri May 11, 2007 4:29 pm Post subject: One to Many - Serial connections

Someone must have come up with an elegant way to do this.



I've got some serial devices that I'd like to use to feed other devices.  In

a couple of case, if the sending device will allow, I'd like to feed it to 3

downstream devices.  These are single conductor with shield connections and

I've been racking my brain on how to take one to 3 (or 4, or N) and do them

the *correct* way, and via an eye pleasing way.



Anyone care to share how they'd do it?



Alan

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

aadamson(at)highrf.com
Guest

Posted: Fri May 11, 2007 4:42 pm Post subject: One to Many - Serial connections

I guess I should have said.... "Without using terminal blocks"... I'd prefer

to do it just with single conductor, shielded wire...



Alan 



--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

john(at)ballofshame.com
Guest

Posted: Fri May 11, 2007 5:24 pm Post subject: One to Many - Serial connections

You can terminate the source into a DB9.  Use the one with solder cups 

and solder all the pins together.  The mating connector then has a wire 

for each device you wish to hookup.



If it's a foil shield, 1/2 the DB9 can be signal pins, the other 1/2 can 

be the shield from the source.  If it's a braided shield with no wire 

for the shield, you'll have to maintain the shielding through the 

connector/backshell or something like that.



Just some random thoughts.  There's probably a better way to do it,



-John

www.ballofshame.com

Alan K. Adamson wrote:

 	  Quote: 	
		   



 Someone must have come up with an elegant way to do this.



 I've got some serial devices that I'd like to use to feed other devices.  In

 a couple of case, if the sending device will allow, I'd like to feed it to 3

 downstream devices.  These are single conductor with shield connections and

 I've been racking my brain on how to take one to 3 (or 4, or N) and do them

 the *correct* way, and via an eye pleasing way.



 Anyone care to share how they'd do it?



 Alan

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

zk-vii(at)rvproject.gen.n
Guest

Posted: Fri May 11, 2007 5:55 pm Post subject: One to Many - Serial connections

Hi Alan,



Not sure if this is a 'correct' way, but we have taken multiple feeds and

solder spliced multiple lines and then used D pins for the connection.  This

means easy to change / add other lines later if needed, where this gets too

bulky a DB9 has been used.



A second component that has worked well is we have a single DB25 (should

have been DB33) location which is like a mini approach hub for data lines.

All the avionics RS232 (plus a few others like PTT) lines come in and out of

this single DB male/female set.  This includes unused GPS output feeds etc.

Any mods to what feeds what is normally just a pin change and doesn't

require burying into the avionics stack harnesses. Eg. I changed the

transponder FADC feed from the GNS to the GRT change rather than cutting

open the main harness.



Regards,



Carl

--

ZK-VII - RV 7A QB - tying up bundles of wires.... - New Zealand

http://www.rvproject.gen.nz/



[quote] --

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

aadamson(at)highrf.com
Guest

Posted: Fri May 11, 2007 6:27 pm Post subject: One to Many - Serial connections

Holy smoke, you guys are brilliant... While not the perfect solutions, these

are some excellent ideas.  What's even more ironic is that I was going to

use the DBX idea for grounds but hadn't even thought about the spoke/hub

idea for serial data.



Now I've got some thinking to do... I really like the "reuse or change idea"

and the idea of using DB connectors.... Hmmm, now to think thru how to make

a serial bus that doesn't take a bunch of space, and where a single

connector could be used for multiple buss paths...



Great ideas, please keep them coming.... 



Obviously there is a limit to this.  If the RS232 chip that is/was used in

the Transmitting device can't "source" enough voltage, it may not be able to

drive unlimited numbers of downstream devices, but I can probably limit what

needs to be done to provide for my needs.



Thanks all!

Alan

--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum