Easy to source wire to connect board and motors?

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WillAdams
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Easy to source wire to connect board and motors?

Post by WillAdams » Mon Jan 14, 2013 1:56 am

I need to get some w/o ordering on-line.

IEK-07 Stepper Cable 810mm 3

What wire could I get from RadioShack or Home Depot or an auto supply store to connect this?
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potatotron
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Re: Easy to source wire to connect board and motors?

Post by potatotron » Mon Jan 14, 2013 4:28 am

Go to the bulk cable section of Home Depot (somewhere in the electrical section - it sort of looks like a ferris wheel of cable spools). Find some 4 or more stranded conductor cable of 20 gauge or lower, call an attendant and have them cut you off however much you need.

I think I got 15 feet of 7 conductor cable for $0.20/foot (not sure exactly, but I remember being surprised how inexpensive it was). I used 4 conductors for the stepper, 2 for limit switches, and the last for common ground for the switches.

Good luck!

WillAdams
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Re: Easy to source wire to connect board and motors?

Post by WillAdams » Mon Jan 14, 2013 10:39 am

Thanks!

Good to know one aspect of this will be w/in m budget.
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WillAdams
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Re: Easy to source wire to connect board and motors?

Post by WillAdams » Tue Jan 15, 2013 2:05 am

Went a little over budget:

$2.68 for 4 ft of 18-4 CL3R Security Cbl Shld 1' @ 0.63

Part number, best as I can make it out was 0000-249-865 Ed0345.18.10 <A>

I think it is the same as this:

http://www.homedepot.com/h_d1/N-5yc1v/R ... PS4ko7QOSI

just available by the foot. Hopefully it'll work --- probably won't get to try it out until tomorrow evening.

I'm still curious if some other cable which people are likely to have floating around could be re-purposed for this (phone wire? old ethernet cables?).
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Improbable Construct
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Re: Easy to source wire to connect board and motors?

Post by Improbable Construct » Tue Jan 15, 2013 3:48 am

I am pretty sure that is the same cable that I am using.
It seems to work just fine.
It is a little stiff but has been rolling back and forth in my cable track without issue.
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potatotron
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Re: Easy to source wire to connect board and motors?

Post by potatotron » Tue Jan 15, 2013 3:58 am

I'm still curious if some other cable which people are likely to have floating around could be re-purposed for this (phone wire? old ethernet cables?).
Typical Cat5 (Ethernet) cable is 24 gauge, which can carry about .6 amps. Since it has 4 pairs you could double up the wires and get 1.2 amps, enough for a smaller 1 amp motor.

Or you could use 2 Ethernet cables, 4 sets of 4 wires would be good for a 2 amp motor...

wpaulson
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Re: Easy to source wire to connect board and motors?

Post by wpaulson » Fri Jan 18, 2013 6:19 pm

One nicely designed 3D printer, the Mendel90Image, uses the flat ribbon cable that's found inside computers, using multiple strands within the cable for driving motors. It avoids the rats nest of wires that can surround a project.
Flat ribbon cable with 28 gauge wires can safely carry around 1.4 amp per strand for chassis wiring, so three or four strands should be adequate for small stepper motors.

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