sd card automation

Hi all

anyone know where i can look to find out how i use the sd card reader on the megatronics v2.0 to automate a print. I placed a file on the card and started the job but disconnecting the usb then stops the print.??

I have to missing something.

Cheers for any help

Mike

Did you start the job from the main toolbar or within the sd card windows? If you start it from the sd manager windows it should continue running even when there is no connection.

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ah. good question, i'll let you know. currently having issues printing the perimeter test.

mike

Hi

right got things working again. back to the automation problem

I have added a gcode file to the memory card thru the sd reader on the pc as it never shows when i save it thru the sd card manager. file saved as thinwall.gcode

on the sd card manager this shows as thinwa~.gco??

I have run this and once the temp starts to rise I have pulled the usb lead and all lights go out and nothing else happens, this is the heater light as well so it all cools down again.

I have waited for it to start printing and then pulled the lead and still the same. I then tried the same with starting the print then disconnecting then pulling the usb lead and the same thing happens.

whenever I unplug the usb so i can take the pc away it all stops.

What am I missing??

Mike

myk68 Wrote:
-------------------------------------------------------
> Hi
>
> right got things working again. back to the
> automation problem
>
> I have added a gcode file to the memory card thru
> the sd reader on the pc as it never shows when i
> save it thru the sd card manager. file saved as
> thinwall.gcode
>
> on the sd card manager this shows as
> thinwa~.gco??

Only dos notation with 8.3 chars for a filename are supported. Longer names get changed as you see.

>
> I have run this and once the temp starts to rise I
> have pulled the usb lead and all lights go out and
> nothing else happens, this is the heater light as
> well so it all cools down again.
>
> I have waited for it to start printing and then
> pulled the lead and still the same. I then tried
> the same with starting the print then
> disconnecting then pulling the usb lead and the
> same thing happens.
>
> whenever I unplug the usb so i can take the pc
> away it all stops.

Looks like disconnecting causes a reset on your board.
Do you have a lcd display? Then you would see the restart.

You could try different reset on connect methods in printer settings and see if that changes the reset behaviour on disconnect.

BTW: What board are you using? I'm quite sure this does not happen with my ramps board.

---

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>
> Looks like disconnecting causes a reset on your
> board.
> Do you have a lcd display? Then you would see the
> restart.
>
> You could try different reset on connect methods
> in printer settings and see if that changes the
> reset behaviour on disconnect.
>
> BTW: What board are you using? I'm quite sure this
> does not happen with my ramps board.



I havent got an LCD yet thats for later :-)

I am using the Megatronics v2.0

what have you got your settings on. mine are -

baud rate 250000
transfer protocol autodetect
reset on connect DTR toggle, also tried DTR low>high>low
reset on emergency send emergency command and reconnect
recieve cache 127

Ping pong ive tried on and off

this may be a daft question but when i pull the usb it has nothing powering it, as this comes from the usb

should i have another power supply going in other than the 12v for the motors??

Mike

Good point. I do not know how Megatronics works. For ramps you need a special diode to allow powering over 12v. So if you have something similar you unpower the elevtronics with unplugging, which of course would stop the print. Check the documentation and see if you can measure 5v on some pins that should have 5v like the lcd connector.

---

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thats got it thank you for the help

mike