Some filament is transparent to infrared.

The text editor can mess up the SetNetwork macro by using the wrong double quote marks. It has been previously reported for a Mac editor and I've found for Windows that Notepad++ does it also. One cure is to copy/paste from the web page to make the macro.

@AaronGreen:

I rams the bed at G1 Z0.0 F1000, even though that's a different position to the place it rammed it on my test print (far right).

I haven't continued with the process for fear of ramming the bed again.

My hotend Z offset is: M307 H1 A250 C140 D5.3 B0 S1

Whereas it was originally 0.9. I found that every time I did the Z0 calibration, the nozzle would always return to 5.4mm above the bed. Even if I set the physical height to 0.1, then told it to recognise it as Z0, then save it, it still would return to Z5.4 as Z0.

Maybe I've done the Z0 calibration wrong and used the wrong setting to get it there…

M307 doesn't set the z height. What you show is the hotend heater setting.

The WiFi has two connectors for the z motor and they're driven by one driver.

You can type in the temp you want in the box.

Use a macro, call it in both places. With a macro, you'll only have one place to change.

After editing config.g, you have to reboot for the changes to be used. I use macros to set the z offset for each type of filament and call the appropriate one in the slicer.

For the fan see https://www.duet3d.com/forum/thread.php?pid=6412#p6412

Shutdown: turn off the power, nothing special needs to be done before doing that. If you have an all metal hotend, wait for it to get below 50c before turning off the power. This will help prevent the filament from jamming.

Restart: via the web, hit the emergency stop button. On the board, hit the reset button. Another way: open config.g in DWC and save changes and it should prompt to reboot the board. Then there is the ol' standby: turn it off, wait for all the leds to go out, then turn it on.

Found this: http://www.chitu3d.com/3d-printer-parts-general-add-on-heated-bed-power-expansion-module-2/
After following the url on the circuit board.

The only spec is 25A max and only mentions 12vdc in determining the load.