Duet 0.6 motor loom using 40-pin IDE cable

I'm building my Ormerod 2 from scratch and it's mechanically finished, but I'm now faced with the rather daunting task of building my own wiring looms to complete the electronics without a crimping tool. I really don't want to solder directly on to the pins of my Duet, so I'm looking into the possibility of using the 40-pin headers on the Duet 0.6 with an old IDE cable (with the "blocked" hole cut out). Some research online indicates this is the "old" way of wiring a Duet, and has been retired on later versions of the board. I have a bunch of single-pin header wires that fit perfectly into the IDE cable, and I don't have any female single leads (damn it!), so I figured this is my best option.

Basically, I'm going to plug in my 40-pin female cable to the male headers on the board, solder my wires to the single-pin cables, and plug them into the other female end of the IDE cable. (see the example I've attached). Is there any reason that I should not be doing this? I'm basically wondering if the other stepper motor pins along the edge of the board are replacements for what is already exposed on the header pins.

Does anybody have a better wiring diagram that I can use, other than what's printed on the back of the board?

Thanks!

Edited 2 time(s). Last edit at 12/27/2015 07:19PM by 0x0000.

One "gotcha" I've found so far - my stepper motors have six pins. They all came with a loom on one end... but only four wires coming out!

Quote
0x0000
One "gotcha" I've found so far - my stepper motors have six pins. They all came with a loom on one end... but only four wires coming out!

Where did you order your Ormerod Kit? or did you make it yourself?

Usualy you get complete set of wires with pins in kits.



All my motors have 4 wires so i think you should be ok unless you have some other motor then Nema 17.

If your motors comes with 6 wires you can ignore two wires.
The cores of your IDE-cable are probably to weak so they can burn. That would be not a good idea to use that. A crimping tool costs less than 20€ and the connectors are complete under 1€.

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Slicer: Simplify3D 4.0; sometimes CraftWare 1.14 or Cura 2.7
Delta with Duet-WiFi, FW: 1.20.1RC2; mini-sensor board by dc42 for auto-leveling
Ormerod common modifications: Mini-sensor board by dc42, aluminum X-arm, 0.4 mm nozzle E3D like, 2nd fan, Z stepper nut M5 x 15, Herringbone gears, Z-axis bearing at top, spring loaded extruder with pneumatic fitting, Y belt axis tensioner
Ormerod 2: FW: 1.19-dc42 on Duet-WiFi. own build, modifications: GT2-belts, silicone heat-bed, different motors and so on. Printed parts: bed support, (PSU holder) and Y-feet.
Ormerod 1: FW: 1.15c-dc42 on 1k Duet-Board. Modifications: Aluminium bed-support, (nearly) all parts reprinted in PLA/ ABS, and so on.

You can also use Needlenose Pliers for the Crimps. But crimping tool is better obviusly.

Quote
Darathy
Where did you order your Ormerod Kit? or did you make it yourself?

Usualy you get complete set of wires with pins in kits.

ORM2-528.5-Duet0.6-109-v1.png

All my motors have 4 wires so i think you should be ok unless you have some other motor then Nema 17.

Thanks Darathy. It's not a kit - I'm building from scratch! After reading Treito's comments, it sounds like finding crimps and crimping the correct wires is worth my time, assuming I can find the correct wires. It may be difficult, but to quote my favourite line from E3D's documentation "it is much more difficult to extinguish a housefire"

Edited 1 time(s). Last edit at 12/28/2015 04:15PM by 0x0000.

Quote
Treito
If your motors comes with 6 wires you can ignore two wires.
The cores of your IDE-cable are probably to weak so they can burn. That would be not a good idea to use that. A crimping tool costs less than 20€ and the connectors are complete under 1€.

Thanks heaps, Treito! I hadn't considered the amount of power running through the wires would be enough to burn them. Though now that has me wondering, what wires are suitable? Is the solid 22-gauge wire out of an Ethernet network cable good enough, or should I find something thicker? I'll look around for crimps, or even completed Dupont female-to-female cables, but I need to be sure the wires they're attached to are suitable.

Cheers,
~0

[forums.reprap.org]

on 2nd post he says 22 AWG is anaugh for nema 17 and 18 AWG for nema 23.

I would strongly recommend crimping especially when the cable is under repeated flex from movement.
A crimp tool can be bought on ebay for around £20, and I'm sure it's come in handy for other projects.
Item number 120933035908

Alternatively both Rapid and Farnell sell it
Just Google
RVFM HT-225D Ratchet Action Crimp Tool.

This tool works with the molex kk series and the Dupont connectors used on the original ormerods, I believe.

A solid wire would break easily when used under movement.
Edit: BTW My crimp tool is called HT-225D and works fine.

Edited 1 time(s). Last edit at 12/29/2015 02:19AM by Treito.

---

Slicer: Simplify3D 4.0; sometimes CraftWare 1.14 or Cura 2.7
Delta with Duet-WiFi, FW: 1.20.1RC2; mini-sensor board by dc42 for auto-leveling
Ormerod common modifications: Mini-sensor board by dc42, aluminum X-arm, 0.4 mm nozzle E3D like, 2nd fan, Z stepper nut M5 x 15, Herringbone gears, Z-axis bearing at top, spring loaded extruder with pneumatic fitting, Y belt axis tensioner
Ormerod 2: FW: 1.19-dc42 on Duet-WiFi. own build, modifications: GT2-belts, silicone heat-bed, different motors and so on. Printed parts: bed support, (PSU holder) and Y-feet.
Ormerod 1: FW: 1.15c-dc42 on 1k Duet-Board. Modifications: Aluminium bed-support, (nearly) all parts reprinted in PLA/ ABS, and so on.