I'm trying to run the wiring needed for my dual E3D's. Are there any issues with running additional wires for thermistors through the same channel as the endstop wires? I know there's reported interference with running the wires from the hotend parallel the endstop wires, which is why we run them perpendicular, but what about wires for other components, such as thermistors, LED's, fans, etc? I don't have enough room in the channel the original hotend wires run through for another 4 wires. I think I'm going to have trouble getting the 2 needed for the second hotend to fit, so I need to find a way to route the rest of the wires.
Oh, I also need to run wires for the additional stepper motor. So, I wonder if there'd be an issue running those wires with the endstop wires as well.
Running additional wiring / avoiding interference
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Captain Starfish
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Re: Running additional wiring / avoiding interference
Generally I'd be trying to keep power, digital signal and analogue signal separated.
Hot ends, fans, LEDs, steppers are all power out and I'd throw them together.
Thermistors I'd run separately - they are small signals with a fairly high impedance into the RAMBO and really susceptible to noise.
End switches and any other digital signalling I'd run separately again - they're also mildly susceptible to noise and can also induce noise on the thermistor lines.
FWIW all of the heater and fan "+" outputs on the RAMBO are connected to the one power rail, you can run a single sufficiently large power line and split it at the effector if that helps.
I gave up trying to run everything down the columns, just ran each endstop down its extrusion and then bundled the rest in a flex conduit behind the Z column.
Hot ends, fans, LEDs, steppers are all power out and I'd throw them together.
Thermistors I'd run separately - they are small signals with a fairly high impedance into the RAMBO and really susceptible to noise.
End switches and any other digital signalling I'd run separately again - they're also mildly susceptible to noise and can also induce noise on the thermistor lines.
FWIW all of the heater and fan "+" outputs on the RAMBO are connected to the one power rail, you can run a single sufficiently large power line and split it at the effector if that helps.
I gave up trying to run everything down the columns, just ran each endstop down its extrusion and then bundled the rest in a flex conduit behind the Z column.
Re: Running additional wiring / avoiding interference
I see I see, thanks for the info! I was looking at it, toying at the idea of running a conduit of sorts, like a pvc pipe behind one of the axes. It was probably a pic from your setup I saw that initially gave me that idea, but was trying to avoid it. But yeah, I think that's going to have to be the way to go. There just isn't room in those narrow channels.
Looking at it closer, I could probably run the wires through the SIDES of the extrusions, then if I wanted to hide the wires, I could run a thin plastic piece over them. There wouldn't be an interference with the rollers. But, I think for now, easier to just go with that external conduit like you're suggesting.
Too many ideas that take me too long to figure out.
I was planning on running all the fans and LED's through a single pair, though the layer fan separately. I plan on creating 3 to 1 JST connector for the 2 E3D fans and LED's, though, I may just go with a single fan for the 2 hotends now, to cut down on bulk, so that bit's taken care of.
Looking at it closer, I could probably run the wires through the SIDES of the extrusions, then if I wanted to hide the wires, I could run a thin plastic piece over them. There wouldn't be an interference with the rollers. But, I think for now, easier to just go with that external conduit like you're suggesting.
Too many ideas that take me too long to figure out. I was planning on running all the fans and LED's through a single pair, though the layer fan separately. I plan on creating 3 to 1 JST connector for the 2 E3D fans and LED's, though, I may just go with a single fan for the 2 hotends now, to cut down on bulk, so that bit's taken care of.
Re: Running additional wiring / avoiding interference
Hmmm....I wonder if having the stepper on the top mounted extruder ziptied until about halfway up with my hot end and thermistor wires affects anything.
On my Vietnam build (yes, trying to be flashy), we went to a street vendor and got a 1/16 x 1 by 3 ft galvanized piece of steel, drilled holes in it for zip ties. I think we painted it the school's blue color. We just screwed it onto the edges of the horizontal "circles" and that seemed to do the trick. Conduit sounds better but we couldn't find any.
Interestingly enough (well, interesting to me): We made six visits to various vendors getting parts. Even though I thought I did my best kidding things out (after four builds, I should know), we still needed stuff. Only moderately embarrassing.
On my Vietnam build (yes, trying to be flashy), we went to a street vendor and got a 1/16 x 1 by 3 ft galvanized piece of steel, drilled holes in it for zip ties. I think we painted it the school's blue color. We just screwed it onto the edges of the horizontal "circles" and that seemed to do the trick. Conduit sounds better but we couldn't find any.
Interestingly enough (well, interesting to me): We made six visits to various vendors getting parts. Even though I thought I did my best kidding things out (after four builds, I should know), we still needed stuff. Only moderately embarrassing.
Technologist, Maker, Willing to question conventional logic
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