Random Tech StuffMay 25
amd

Electronics folks, I’m looking for an easy to use connector that I can use for installing a filtration unit under the bed of my voron 2.4 printer.

It’s going to be in an airspace between a 110C heater and an ACM deck plate so it will likely be quite warm but not oven hot.

Something like a barrel jack would be great but the ones I see on DigiKey and McMaster are only rated at 80C.

What’s a better option? Just a JST?

#electronics #3DPrinting #Voron @3dprinting

May 19 at 8:46pmWeb
Show threadMawokaMay 19
@amd
As far as I know, the JST ones are rated for 100+ degrees and are widely available, so I'd go with one of them, probably XH.
@3dprinting
Show threadKoz RossMay 19
@Mawoka @amd @3dprinting I second JSTs. I think my Formbot Trident kit uses a JST under the bed somewhere already and I've yet to have problems.
Show threadamdMay 19

@koz @Mawoka

/me whines “…but I don’t want to solder female JST connectors!”

Show threadKoz RossMay 19
@amd @Mawoka Me when any soldering ever.
Show threadamdMay 19

@koz @Mawoka

Realistically, microfits are crimps for both socket and pin and are rated for 125C so they’re probably the right move.

Show threadKoz RossMay 19
@amd @Mawoka If you have microfits lying around, then yes, I agree. However, JSTs are _way_ more accessible, and a bunch cheaper too, at least for me.
Show threademily, blinkenlight witchMay 19
@amd @koz @Mawoka Use one of the wire to wire ones then. JST SM is my standard "connect wires to other wires securely when I don't care that much about space usage" connector.

(n.b. i have not looked up their heat resistance properties)

(edit: now i have. 85C is probably less than you want)
Show threadamdMay 19

@emily @koz @Mawoka

Apparently wagos are rated to 105C continuous. I have a few genuine 221-415 I can use.

My current plan is to solder to the JSTs I have on hand and use wagos to make it easier to replace in the event that my solder joints fail from use.

Show threadC.May 20

@amd @koz @Mawoka

Use crimp-type contacts.

Show threadamdMay 20

@cazabon

Like spade connectors?

That would totally work but it’s not quite as easy to connect and disconnect as a barrel connector, or even a JST/microfit.

I’m going to need to be able to remove and reinstall this filtration unit somewhat regularly to swap out the granules.

@koz @Mawoka

Show threadC.May 20

@amd @koz @Mawoka

No, I meant like crimp-style JST XH connectors. You said you didn't want to solder female JST contacts - I use them all the time.

You can also buy short cables with a JST plug (female contacts or a receptacle with male contacts) already on one end.

Show threadamdMay 20

@cazabon @koz @Mawoka

Link?

I am super far from an expert on this but I thought the only JST with a crimp receptacle was SM and I don’t generally see those.

I think I also used the wrong word for “female”, I mean the receptacle that typically comes with pins to solder to a board.

I’ve seen the pre-pigtailed ones. I can make those, I just don’t prefer to and I always worry about manipulating those kinds of solder joints.

Show threadC.May 20

@amd @koz @Mawoka

Aha - we probably are using different terminology. Not our fault; the terms the manufacturers use are misleading. "Female" in these cases means the female contacts which are confusingly in the plug, not the receptacle/header.

If you're looking for the pin side, then you might find the inline receptacles and pins - they must exist, since they sell them pre-pigtailed. However, standard JST XH connectors are only rated for 85C. That might be fine underneath the build plate, but might not be. If you need higher temperature resistance, there are heavier-duty versions made of fiberglass-filled nylon (PA66) which are rated higher.

https://www.jst-mfg.com/product/pdf/eng/eXH.pdf

Show threadÖlbaumMay 19

@amd @3dprinting I used these in a project and I like them. Shrouded, oriented, locked, easy to crimp, and really easy to connect and disconnect with one hand. Rated up to 105 °C.

https://www.mouser.ch/ProductDetail/Molex/171971-0004?qs=lc2O%252BfHJPVbMZQBpFfZdzQ%3D%3D