Posts made by technosworld

Great, so it that referring to one of the IO Headers then?

This may be a stupid question, but I'm designing a printer using the Duet3 interface and wanted to find out with the tiny stepper motor that is being used for the toolchanges, if there's any other portion of the Duet3 it could work with beside the regular stepper drivers. I'd like to be able to use the 6 stepper drivers for other things, and this motor only requires a very small current and turns 1/4 rotation to pick up tools.

Electrical:

400mA phase current RMS
3mH inductance

Interface:

Motor connector: Molex PicoBlade 051021-0400

Here's a link to the full specs of the motor:

https://e3d-online.dozuki.com/Document/rHGYlVFPjvVugPyy/Toolchanger-ToolHead-Stepper-M.pdf

I own Venturi 3D who are developing an E3D compatible toolchanger, and we're still finalizing it, but meanwhile we have been contacted by a company who is requesting a possible custom build of a 6-toolchanging 3D printer, to be developed now and ready for when E3D sells the individual tools soon.

In theory, having a Duetwifi with a Duex5 should be able to run the standard CoreXY setup (Single Z so far) and run 6 extruders AND one stepper for the toolchanging mechanism itself.

So on paper this seems to be a straightforward setup with just enough of ports on both boards to accommodate this , but I don't want to move forward if there's anything I'm overlooking that we need to change. Does anyone have input on issues we may run into with this setup?

Does each E0 and E1 heater have a separate mosfet?

I just bought a new Duet2 (2.02) from Filastruder about a week ago and setting it up in the new Venturi 3D prototype for ERRF, but ran into quite an issue. I had plugged in some 24 V fans, and started to smell burning on startup.

So I unplugged the printer, then found I blew one of the 7.5 Amp fuses, replaced it, but now the E0 heater just turns on immediately upon startup. After doing some board research, seems a Mosfet is bad, but the other heater doesn't do this.....however

I was hoping to use the other heater, but after trying to set that up, it blows another fuse when turning it on to heat up.

I don't know if I can do anything to get this board working before ERRF (I know, last minute is a bad thing)

Anyone have advice?

(The good news that I'll be 2 booths away from the Duet booth at ERRF)