Error: Short-to-ground on driver 4

Lakko

Hi,
yesterday evening while i'm printing my first 3dbenchy after 1 hour of printing i start to have on DWC the short to ground message:

Error: Short-to-ground on driver 4
Error: Over temperature shutdown on drivers 4

```but i have no extruder/motor connected to it.
this is from my config.g code

M667 S1 ; set CoreXY mode

M569 P0 S1 ; X motor runs forwards
M569 P1 S1 ; Y motor runs forwards
M569 P2 S0 ; Z Drive 2 goes forwards
M569 P3 S1 ; E Drive 3 goes forwards


![](http://oi64.tinypic.com/qn8j9z.jpg)

what can be the issue?

dc42

I'm sorry, most likely the driver chip has failed. If you bought the Duet direct from Duet3D, see https://www.duet3d.com/warranty for how to get the Duet repaired or replaced.

Lakko

Yes, bought from Duet3d.
Thank you

Lakko

Hi,
this morning is finaly arrived my new duet
I've backuped the SD card with my latest version of config.g file of my printer.
i have to do anyway this procedure:
https://www.duet3d.com/wiki/Getting_connected_to_the_Duet_WiFi
or i can insert the SD with the backaped file and i'm ready to print?

M111 S0                             ; Debug off
M550 PD-Bot_CoreXY                  ; Machine name (P + anything you like)
M551 Preprap                        ; Machine password (used for FTP connections)
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xED ; MAC Address
M552 S1                             ; Enable WiFi
M587 S"TP-LINK_422E43" P"31851215"  ; Configure access point
M586 P0 S1                          ; Enable HTTP
M586 P1 S0                          ; Disable FTP
M586 P2 S0                          ; Disable Telnet
M555 P2                             ; Set output to look like Marlin
;M575 P1 B57600 S1                  ; Comms parameters for PanelDue

Another question, i want to upgrade to firmaware 1.20 and i read this:

•	You can now disable monitoring of TMC2660 drivers that are not in use by using parameter R-1 in the corresponding M569 command

```so if i disable the monitoring for the driver4 that is not in use and it has a short to ground i can't notice it?

dc42

You will need to run through the WiFi connection procedure again, because for security reasons your WiFi password is stored in the WiFi module, not on the card.

Yes the latest firmware allows you to ignore driver error reports, although it should be used with caution.

Lakko

@dc42:

You will need to run through the WiFi connection procedure again, because for security reasons your WiFi password is stored in the WiFi module, not on the card.

Yes the latest firmware allows you to ignore driver error reports, although it should be used with caution.

Thanks for the reply
I think i prefer to know if a short occur.
I have upgraded the firmware and i've noticed in the section "Connecting to your access point using firmware 1.19 or later"
a possibly mistake in this paragraph:

•	Send the following command to start the WiFi module so that it can accept a programming command:
M552 S0

```but it should be M552 S1 to start the wifi or i'm wrong?

dc42

M552 S0 is corrrect. It enables the wifi module but doesn't attempt to connect to anything.