I did a little write-up on adding pushbutton switches to control my Duet Wifi. I thought it might be helpful if anyone else decides to mess around with external triggers with the Duet.

https://www.wildbot3d.xyz/contol-panel/

@rjenkinsgb said in Which Crimpers for Duet 2:

you must also solder the wire if you want long term reliability.

I'm going to have to go ahead and disagree with that completely.

Woah...Didn't realize this was getting any attention. I've been playing around with my website since it wasn't getting any traffic and managed to break it. I'll get it back up as soon as I can.

Here are some pictures of my control panel if anyone is interested.

@phaedrux said in External Triggers:

@hayseed_byte would you consider adding the gist of it to the wiki for posterity?

I'd be happy to.

I wrote a bit about M581 that you might find helpful. There's an article on my website but since I'm not very good at managing a website and it often goes down, I added it to the wiki.

Yeah, that's a pretty standard policy. But this isn't a standard product. If I wanted standard, I'd buy a $30 MKS board off amazon and if it was DoA, I'd expect to have to jump through a few hoops to get it replaced. Instead, I bought a premium product from an authorized distributor for a premium price.

I've written up my experiences adding physical buttons to the Duet2Wifi here and here.

I fixed the link, though now the url is https://www.wildbot3d.xyz/contol-panel/. So the article is back up if anyone wants to check it out in the future.

@Chriss said in JST Crimp pliers?:

That may sounds a bit over the top but I love good tools and I'm sure that it makes sense to support good engineering. I think that this is the case with duet, isn't it?

A man after my own heart.

@phaedrux I added it to the wiki. I'm not much of a writer but all the information is there, I think.
https://duet3d.dozuki.com/Wiki/Using_M581_-_External_Triggers_and_Building_a_Control_Panel

I just want to say I love everything about this thread.

@nicolo17

You might check this thread:
https://forum.duet3d.com/topic/28498/phase-a-and-b-may-be-disconnected

I believe you're trying to make the motors go too fast for your supply voltage.

@brs

Yah. With the paneldue the M300 commands produce a tone that's only audible if you're standing right next to the printer. Which makes it kinda pointless.

I've written up my experiences adding physical buttons to the Duet2Wifi here and here.

@rjenkinsgb

@rjenkinsgb said in Which Crimpers for Duet 2:

Soldering is technically better, for small wires:-
https://www.osti.gov/servlets/purl/1288669

That conference in your link seems to be talking about crimp connectors that were faulty because they were made out of the wrong material.

The connector representing the 2005 (good) lot showed
excellent bonding along the pin-crimp sleeve interface.

It does mention that soldering to solder lugs is better than crimping a pin improperly. It doesn't mention soldering a crimped connection.

I'm just trying to learn. I'm not an engineer. I don't work in aerospace or nuclear security so I'm not invited to conferences like you linked there. I have a mere fifteen years experience in industrial maintenance, nothing like your fifty years. But what I've seen is trying to solder a crimped connection leads to solder wicking up the wire making it stiff and causing to it break. It also damages the insulation and I think the bottom set of "wings" of the Molex KK pins are meant to hold the insulation to provide some strain relief. But I could be wrong.

@rjenkinsgb said in Which Crimpers for Duet 2:

That is of course your right.
I'm just working from near 50 years of designing and repairing industrial control systems, and seeing a significant number of poor connections and long-term failures with that general type of small crimp.
The fact is that if you can ever pull a wire out after crimping without it ripping strands, it's not truly crimped and can fail eventually.
https://smcontact.eu/good-crimp-connection/
Anyway, each to their own it's only information!

You're telling me that you repair industrial control systems in the field by using the wrong crimpers and adding a dab of solder to a crimped connection?

@rjenkinsgb said in Which Crimpers for Duet 2:

you must also solder the wire if you want long term reliability.

I'm going to have to go ahead and disagree with that completely.

Nice machine! Makes me want to start planning my next build.

@Chriss said in JST Crimp pliers?:

That may sounds a bit over the top but I love good tools and I'm sure that it makes sense to support good engineering. I think that this is the case with duet, isn't it?

A man after my own heart.

@dc42 said in JST Crimp pliers?:

Duet 3 uses both KK254 and VH396 connectors. The VH396 connectors can be crimped by Engineer PA21 crimp pliers.

Not that I plan to move to Duet3's any time soon (currently running 10 printers each with a Duet2Wifi+Paneldue) but do you mean that the PA21 will crimp VH396 pins or that it is actually designed to crimp them? I've tried the cheap ratcheting crimpers and the PA09 for KK254 and while they kinda work, the Molex 63811-8200 crimpers were totally worth the investment.

I think I had installed five Duets with the cheap ones when I finally talked myself into buying the Molex crimpers and the next five Duets went much faster.