Duet 2 WiFi Molex KK???
-
Okay, it's Moldex KK, but what size (I need to order more)?? I've looked through the documentation, and I can't find the exact pin spacing (size) anywhere. If one looks at the Filastruder connector kit- it says " Ziploc 55x75mm (2.25"x3")" or "5-way white Molex KK-type housings". I think it's 2.54mm, as that's the smallest pitch size Molex offers KK style connectors in, but I've seen elsewhere where people say that's wrong. I feel like whoever chose Molex KK was attempting to fix something that wasn't broken to begin with. I have never had any one of my three printers develop a loose cable.
The absolute pain of having to switch my Ender 3 to these ridiculous connectors IS NOT WORTH IT. There is not enough vibrations in these platforms to warrant latch connections. Perhaps if we wanted to 3d print while riding an all terrain vehicle, then one would need latch connectors. Just imagine how easy this entire installation could be- it could all be plug-and-play, but here I am, literally filing the edges off of each individual pin with a small diamond file because they don't come off when broken off the chain. There's so many better alternatives to Molex, like Amphenol. I'd happily pay $30 more money for pogo pins. People need to stop using Molex, and they need to go out of business- they make garbage. I even have a Molex branded crimper- it too, is a rusting piece of garbage. The world needs more connector and cable autists. Go look at how freaking elegant pogo pins are.
-
@MolexIsSatan That's an odd rant. I'm sure that if the Duet guys made their boards with non-latching connectors, they would have many more complaints about connectors coming loose - remember that these boards are designed to meet the requirements of numerous users and use cases. I myself have expansions boards mounted on moving gantries and would pretty pi**ed off if the connectors were non latching.
But it's simplicity itself to bend back or snap off the latching part of the board connector, then you could use pretty much any non-latching connector.
PS - gen 3 duet boards use a lot of JST connectors rather than Molex.
PPS - the connectors are well documented on the Duet web site. Perhaps you should have looked at the specification before you bought the board rather than rant about it afterwards.
-
@deckingman I do not see pin pitch anywhere in the documentation, nor the Duet 2 WiFi product page. I only see "KK-Headers" under "Description of Connections" @ https://docs.duet3d.com/Duet3D_hardware/Duet_2_family/Duet_2_WiFi_Ethernet_Hardware_Overview
If a cable comes lose it's because the user was in their digging around, or in some other way, pulled it out. They don't simply pop out of their socket.
-
@MolexIsSatan, you'd be surprised how often you have to go 'digging around' in there!
With 50 million connectors on a hand-sized board, connectors popping out is a serious issue!
Thank you dc42 for giving us locking connectors! -
@MolexIsSatan I note that this is your very first post. If you had spent any time at all on these forums, you'd have noticed that a large number of problems which users experience are due to poor wiring. Tabbed connectors like the kk series go some way to mitigating these issues making it (almost) impossible to insert a connector the wrong way round. You would also realise that some machines, especially CNC machines with heavy spindles, can be subject to vibration which would make non-latching connectors come loose.
-
Just for the record: 2.54mm (or 100mil) is common pitch for headers.
If you see a description of a header without mentioning the pitch, it's almost 100% 2.54mm -
https://docs.duet3d.com/en/User_manual/Troubleshooting/Parts gives you exact part numbers which should alleviate any doubt.
(Also I much prefer Molex KK over non latching connectors where cheap printer manufacturers resort to hot glue to make up for lack of latch)
