Topics created by Snyggis 0

@Snyggis-0 See the 'Alarm' tab here https://docs.duet3d.com/Duet3D_hardware/Duet_3_family/Duet_3_Expansion_1XD#configuration-examples which has an example for connecting the alarm to a 1XD board (I need to copy and update these examples to the 6XD page, thanks for the reminder!).

You set up the Duet pin you connected the alarm wire to with M950 (see https://docs.duet3d.com/User_manual/Reference/Gcodes#m950-create-heater-fan-spindle-led-strip-or-gpioservo-pin) You define a trigger (see https://docs.duet3d.com/User_manual/Reference/Gcodes#m581-configure-external-trigger) that checks that input for a signal. You define a macro (see https://docs.duet3d.com/en/User_manual/Tuning/Macros#triggers) that runs when the trigger detects the signal. This can do whatever you want, but usually in the event of an external driver error, you want the machine to pause to see if it recovers position. You may want the motion to stop (rather than pause, which may move the axes to a 'safe' position), in which case you could raise a driver error event with M957 (see https://docs.duet3d.com/User_manual/Reference/Gcodes#m957-raise-event, and for the effect of this see https://docs.duet3d.com/en/User_manual/RepRapFirmware/Events)

It doesn't look like the driver has an alarm reset, so I'm not sure what action needs to be taken to clear the alarm.

Ian

@Snyggis-0 said in Bed Leveling Probe - Liquid Cooled Hot End:

Is the general idea to get rid of the z switches, as this is now done with the touch probe?

Not especially, it's just that probes can measure at any point on the bed, are very accurate and repeatable, and can be used for bed levelling and creating the bed mesh.

The best use for endstops on Z, I think, is to have them at the maximum end. If you lose power during a print, and want to resume, but the Z has moved, you can home Z to the maximum end (so the nozzle doesn't hit the print if you try and use the probe to home), and then resume the print.

Ian

@droftarts

I absolutely agree with your thoughts if your concern is power failures.

I don't like power failures for variety of reasons.

So my approach was to install a propane powered generator with automatic transfer plus dual-conversion UPS units with enough runtime to power the printers until the generator kicks in, which is typically 30 seconds.

Overkill? Probably but its nice to have power that doesn't go away because a storm rolls in. I will admit that I only have enough propane in the tank for 10 days, so a serious power outage due to say, storm damage, may mean I will lose power.

Moving the endstops is a much cheaper solution. 😁

Frederick