Smart Effector Z-Probe No Longer Working

crynool

Doublecheck the wires / crimps in worst case, redo them to be sure (on both ends).

When you tap the hotend while connected, does the LED flash?

Mike

Also check that your fan isn't too powerful/too close to the strain gauge. I've had it fail with some high current Sunon fans, solved by moving the fan further from the center.

Dougal1957

@sslouch that looks ok does your PTFE tube protrude thro the nimble adaptor or does it end flush or slightly below the surface?

sslouch

Thanks all.

@crynool No, it does not flash when you tap hot end.

@Mike It is the same fan that I have always used with no issues until now.

@Dougal1957 The tube ends flush with top of adapter/bottom of Nimble.

crynool

If it does not flash, it is either the wiring or the PCB.

I managed to screw one smart effector, was just a tiny spot on the PCB, looked like some 'dirt', was actually this was causing lot of trouble as I could not calibrate the printer. Was showing different results everytime....

sslouch

@crynool I am afraid it is the PCB. Unfortunately they appear to be out of stock until mid February
I found a different mounting adapter that uses the magball mount points instead so I will try when I get a new one. Guess we are down until then.

dc42

@sslouch, if you have a multimeter then you can check the traces.

0_1550069584607_07b152a7-9b62-4443-af97-e6cc8f8055d7-image.png

Measure the resistance between the right hand end of R11 and the left hand end of R13. Also between the right hand end of R11 and the left hand end of R14. Both readings should be around 30 ohms and within about 20% of each other.

sslouch

@dc42

Thanks

Trace

R11R --> R13 ~16.6 K Ohms

R11R --> R14 ~35 Ohms

dc42

If you can identify where the damage to the trace is, you might be able to bridge it if the damaged area isn't too large. It's not easy though because the traces are so fine.

sslouch

Couldn't get it fixed but I finally received a new smart effector yesterday after being out of stock for a while. Unfortunately, they have changed the configuration of the connectors and as a result it can no longer be used as shown in the documentation on Filastruder. They have moved the thermistor connector to the other side of the PCB so now the heat sink fan no longer fits there. The only place it can go is in the front where the print fan is (was). I was using the print fan bracket and print fan duct from @dc42 on thingiverse. Does anyone have any suggestions for a print fan for this new PCB configuration? Thanks!

dc42

The print fan bracket that I published still fits the version 2 Smart Effector. I updated the fitting instructions at https://duet3d.dozuki.com/Wiki/Smart_effector_and_carriage_adapters_for_delta_printer#Section_Assembly to cover both versions a couple of weeks ago. The heatsink fan goes on the opposite side compared to version 1.

sslouch

Haha. That's easy enough. Thanks @dc42! I didn't think it would fit there and hate to admit I didn't even try I was able to confirm the z-probe is working again though!