Quick question: signal over 24awg?

[bwevans]

Ive been searching for a simple answer to this but havent had any luck so far. If I run a signal line, say from an 08m on one end to a ULN2003, through a single stranded 24awg wire could I get 25' out of it from one end to another? In this example Id only be using the toggle command but later I may want to use similar wire for serial comms or pwm.

I did find a chart that had 24awg wire at 25.67 ohms per 1000 feet of wire. Divide that down to 25' and thats about .8 ohms. That <i>shouldnt </i> be enough to block the signal should it?

Any thoughts?

Brian

 

[eclectic]

Brian.
Lots of info in this thread.

http://www.rev-ed.co.uk/picaxe/forum/Topic.asp?topic_id=4474&amp;forum_id=24&amp;Topic_Title=RS232%2Bcable%2Blength&amp;forum_title=No+new+posts+please%21+17

AND this one.

http://www.rev-ed.co.uk/picaxe/forum/Topic.asp?topic_id=3283&amp;forum_id=19&amp;Topic_Title=Ribbon%2BCable%2BCurrent%2BLimit%253F&amp;forum_title=No+new+posts+please%21+13

e.

Edited by - eclectic on 02/01/2007 08:33:13

 

[bwevans]

Ahh yes, I suppose it helps to know what to search for. Looks like theres been recent discussion about this as well.

So anyway I should then assume if a &quot;damp string&quot; were to do the trick, toggling outputs on a ULN2003 (or even PWM) over 25' of 24awg should be no problem.

Thanks,
Brian

 

[manuka]

Assuming you mean Picaxe serial linking, then almost ANYTHING even vaguely conductive will do,as Picaxe serial is extremely robust. Although a party trick at the time, we indeed managed serial datacomms over damp string, chains of kids holding hands, &amp; also SWER (single wire earth return). Stan