@T3P3Tony:

Fair enough

I would be pretty surprised if anyone managed to make it fit on 2 layers. Also that would remove the ground plane which would be a bad idea.

Would most likely mean just quite a "few" 0ohm resistors and a larger sized board (which isn't bad in terms of heat dissipation though).

Like I said, we're looking at alternative connectors for the next generation - the current Duets don't have enough space for anything else. I already have some samples of lever-operated terminal blocks, and we are evaluating XT30 connectors too. We're also considering the same type of screw terminals that most PSUs have.

@c310:

…................cables or adapters to be used with standard chineese motors ....................

And thereby hangs the problem - there is no standard for Chinese steppers. Sometimes the cables are wired directly with no socket on the motor, sometimes there is a socket but as David pointed out, the pinout may differ from motor to motor.

But it's not just steppers. Sooner or later you'll need to change a heater cartridge or a thermistor or some other part and the chances are high that the replacement will have no connector, or the wrong type of connector, or the lead will be too long (or too short). There is no getting away from the fact when you start tinkering, sooner or later you'll have to start fitting your own connectors. It's not to difficult - even a 64 year old with no experience can learn how to do it 🙂

To provide serious additional protection to stepper drivers, you need to use varistors, inductors and capacitors. See page 20 of the TMC2130 datasheet for an example.

yes but… disconnecting two plugs and then connecting them to another effector (with for example a different hotend mounted on it) is pretty much the same time wise as disconnecting 1 plug, without the hassle of a different PCB

My Duetwifi is installed in an all aluminum electronics enclosure with a polycarbonate hatch in the back.
As you can imagine I only have a good signal when the printer is oriented so that the back is directed to the antenna of the router.
To cover this issue, I installed a separate AP behind the printer. It is a heavy one, so I don't move it easily. Just rolling it around on a couple of sqm for easy access when tinkering…

Just ordered another for my other printer.

Also on the wiki page, the table for the 8-way white Molex KK connector has labels shown 1 to 8 but this isn't whats on the diagrams of the PCB, shouldn't these be updated to match - ie VCC,MOD,GND etc.

https://www.applied-motion.com/products/stepservo-integrated-motors/tsm23p-2ag

They have a nice selection in their StepServo lineup.

The tuning features are pretty amazing. You can really dial in the accuracy based on the inertia and mechanics of your system.
Pretty pricey, but a really nice total package solution.

Hi,

1000 watt heater in a printer? That's enough heat for a warming a room 9' by 9'

Are you sure you need that kind of power?

Frederick

If you got enough room before the connector: http://www.ebay.com/itm/2pcs-Type-C-USB-C-Female-Micro-USB-Male-Adapter-Converter-Connector-/272354505704

If it's fiddly: https://www.allputer.com/index.php?main_page=product_info&cPath=65_291&products_id=2751&zenid=1a7f4ac6fafaad1fedff8576321445db

The last one took a bit longer to locate 🙂

Is there a way for it to work on files with spaces in them? I know the easy answer is to save without spaces, but sometimes I forget 😃

Good call on the delete statement first!

On the original version 1 sensor I did use a Molex KK connector. Unfortunately it took up more room, making it impossible to fit the sensor below the heatsink of the E3D hot end.

I have made a note of this request and we will look at it when doing the next board revision.

If I were to want to scrape status, would I be better using the pi to pull rr_status, or should I connect it via serial and poll status that way? (curl grabs rr_status nicely for parsing, so was thinking I'd go that route)

Yeah fair enough I didn't know that was one of his too, but that's what I mean, its a well positioned offering, if it weren't people wouldn't be buying them, or they would be selling them on ebay, which they aren't.

Thanks for pointing this out, e3d must now use slightly thicker wires. We will look at getting short 0.75mm ferrules as those fit well into the 3.5mm terminals ( but the standard lenght ones do need to be cut down after crimping).

Currently paused with other projects however reasonably quick to do.

@dc42:

Those points could be used to connect breakout drivers, but as those channels are configured in firmware for TMC2660 drivers, it would require a firmware change to support Pololu-type drivers on those pins. Given that the firmware already supports connecting Pololu-type drivers to the expansion bus, and mapping of XYZ/E1/E2 motors to whatever drivers you want, it seems pointless to complicate the firmware by making the on-board driver type configurable.

This makes sense, also the onboard drivers are IMO far superior to most. No need to complicate things more.

Jeff

I've got two, one on the main board an one on the Duex5. Using the supplied stand off, both are rock solid.