Page MenuHomeAleph Objects Inc

TAZ 6Project
ActivePublic

Details

Description

A place to track all things related to the LulzBot TAZ 6

Recent Activity

Mon, Sep 30

karrad closed T5979: 1.1.9.28 FW fails second print probe as Resolved.
Mon, Sep 30, 9:09 AM · Marlin, TAZ 6
logan added a comment to T5979: 1.1.9.28 FW fails second print probe.

Sounds good

Mon, Sep 30, 9:06 AM · Marlin, TAZ 6
karrad updated subscribers of T5979: 1.1.9.28 FW fails second print probe.

@logan Any objections if I close this one down? I think we have all the gcode files updated at this point.

Mon, Sep 30, 9:05 AM · Marlin, TAZ 6

Mon, Sep 23

marcio added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

Correction: .165 will have the lower current, not .164.

Mon, Sep 23, 9:07 AM · Marlin, Redgum, TAZ 6
marcio added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

FW .164 has the lowered current. You could try that too.

Mon, Sep 23, 8:52 AM · Marlin, Redgum, TAZ 6
marcio added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

http://marlinfw.org/docs/gcode/M907.html

Mon, Sep 23, 8:51 AM · Marlin, Redgum, TAZ 6

Sep 20 2019

logan moved T8936: RAMBo Malfunctions Due to Stepper Driver Failures from Report Issues Here to Change Order on the Redgum board.
Sep 20 2019, 3:55 PM · Marlin, Redgum, TAZ 6

Sep 19 2019

logan added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

I have a Workhorse here I can test with. Do you have any recommendations on a way to test for skipped steps?

Sep 19 2019, 10:39 AM · Marlin, Redgum, TAZ 6
Steven added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

I agree to lowering the current down but I think we should make sure the lowered current is tested on the TAZ Workhorse before we release firmware with the change. It would not be great to replace a small report of driver failures with a greater set of reports of skipped steps. Should be fine but would rather we do some testing fine.

Sep 19 2019, 10:23 AM · Marlin, Redgum, TAZ 6
marcio added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

The higher current on the Workhorse came about because it is the current used on the TAZ Pro. But I agree it makes sense to match it to the settings on the TAZ 6 because the electronics are the same.

Sep 19 2019, 8:43 AM · Marlin, Redgum, TAZ 6
logan added a project to T8936: RAMBo Malfunctions Due to Stepper Driver Failures: Marlin.
Sep 19 2019, 8:25 AM · Marlin, Redgum, TAZ 6
logan assigned T8936: RAMBo Malfunctions Due to Stepper Driver Failures to marcio.

@kent That comparison is exactly what I wanted to do, but hadn't gotten to it yet. Thank you!

Sep 19 2019, 8:25 AM · Marlin, Redgum, TAZ 6

Sep 18 2019

kent added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

In the short term, I recommend lowering the currents back to 175 for X and Y. This is low risk because this is a very similar system to TAZ 6 and we have lots of testing on TAZ 6.

Sep 18 2019, 11:12 AM · Marlin, Redgum, TAZ 6
tutley added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

@kent the change from 175 to 180 changes the current from .97A to 1A so this is only a 30mA change.

Sep 18 2019, 10:29 AM · Marlin, Redgum, TAZ 6
tutley added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

@kent when did we increase the current? i agree that we could reduce the current as we are not seeing skipped steps
The pro already has a heatsink. the trinamic drivers run much cooler than the allegro ones but they are still pretty hot respectively.

Sep 18 2019, 10:24 AM · Marlin, Redgum, TAZ 6
kent added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

What has me scratching my head is that if we know they are a common failure point, and we know that heat is a major contributing factor, why would we increase the driving current (and resulting heat)? Sometimes, increasing the current makes sense, when you are seeing skipped steps and you stay far enough below the maximum operating temperature in the steady state that you aren't risking burning the motor driver out, but I don't think we have been seeing skipped steps, at least, not ones that can be attributed to too-low drive current, and we have been seeing heat related driver failure.

Sep 18 2019, 10:09 AM · Marlin, Redgum, TAZ 6
tutley added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

driver failures have always been fairly common on the rambo boards FWIW

Sep 18 2019, 9:33 AM · Marlin, Redgum, TAZ 6
kent added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

Workhorse stepper driver current settings: https://code.alephobjects.com/diffusion/MARLIN/browse/devel/config/examples/AlephObjects/Redgum_TAZWorkhorse/Goldenrod_HardenedExtruder/Configuration_adv.h$795

Sep 18 2019, 9:32 AM · Marlin, Redgum, TAZ 6
mjpelletier added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

I can look at the board but my observations are that all the motor driver chips (Alegro 4982s) run very hot. This has always been the case, especially with the TAZ series. This isn't a show stopper but the fact that the motor drivers run very hot increases the frequency of failures. At this point, about all we could do is add a back heat sink, like the one on the TAZ Pro. This may cool the motor drivers by a few degrees and lower the chances of random failures.

Sep 18 2019, 7:51 AM · Marlin, Redgum, TAZ 6
kent updated subscribers of T8936: RAMBo Malfunctions Due to Stepper Driver Failures.
Sep 18 2019, 7:38 AM · Marlin, Redgum, TAZ 6

Sep 17 2019

bigmansas added a comment to T8936: RAMBo Malfunctions Due to Stepper Driver Failures.

@mjpelletier I just pulled a RAMBo V1.4a out of a workhorse from upstairs (51NA-1007). It had the x motor driver burn out on it. It was very hot to the touch and the motor was having a bad vibration and strange movement. I will be sending it over for you to evaluate.

Sep 17 2019, 4:24 PM · Marlin, Redgum, TAZ 6
logan triaged T8936: RAMBo Malfunctions Due to Stepper Driver Failures as Normal priority.
Sep 17 2019, 4:19 PM · Marlin, Redgum, TAZ 6

Sep 16 2019

logan closed T7850: Taz 6 x-motor thermal inserts. as Wontfix.

Being that TAZ 6 is no longer in production I am closing this request.

Sep 16 2019, 10:10 AM · TAZ 6, Assembly Instruction Content Request

Aug 25 2019

Galadriel updated subscribers of T8938: RAMBo Malfunctions Additional Failures.
Aug 25 2019, 12:23 PM · TAZ 6
Galadriel updated subscribers of T8411: Uptick in the number of RAMBo failures.
Aug 25 2019, 12:23 PM · TAZ 6
Galadriel updated subscribers of T8937: RAMBo Malfunctions Due to Bed Power.
Aug 25 2019, 12:22 PM · TAZ 6
Galadriel updated subscribers of T8936: RAMBo Malfunctions Due to Stepper Driver Failures.
Aug 25 2019, 12:22 PM · Marlin, Redgum, TAZ 6

Aug 20 2019

kent triaged T9714: e3d some block drawing as Normal priority.
Aug 20 2019, 10:02 AM · TAZ 6
kent removed a project from T9712: e3d somestruder retention plate drawing: Redgum.
Aug 20 2019, 9:54 AM · TAZ 6
kent triaged T9712: e3d somestruder retention plate drawing as Normal priority.
Aug 20 2019, 9:54 AM · TAZ 6

Jul 31 2019

hanna updated subscribers of T9215: Hardened Extruder Not Plunging Far Enough During Probing Sequence.
Jul 31 2019, 2:11 PM · TAZ 6
hanna created T9215: Hardened Extruder Not Plunging Far Enough During Probing Sequence.
Jul 31 2019, 12:49 PM · TAZ 6

Jul 30 2019

EricNugent triaged T9187: Change filament command via LCD forgets where print location is as Normal priority.
Jul 30 2019, 10:07 AM · TAZ 6

Jul 22 2019

Galadriel created T8938: RAMBo Malfunctions Additional Failures.
Jul 22 2019, 1:10 PM · TAZ 6
Galadriel created T8937: RAMBo Malfunctions Due to Bed Power.
Jul 22 2019, 1:03 PM · TAZ 6
Galadriel created T8936: RAMBo Malfunctions Due to Stepper Driver Failures.
Jul 22 2019, 12:54 PM · Marlin, Redgum, TAZ 6

Jul 15 2019

Galadriel added a comment to T8411: Uptick in the number of RAMBo failures.

I am currently going back through the instances of failures listed above in a bit more detail and thus far I have found at least 1 additional issue that I listed that upon closer inspection looks to not actually a RAMBo issue. I wasn't able to get through everything today so I will have to finish and update this on Friday when I am back in. I just wanted to update to make sure that people knew it is still on my radar and I should have things better situated on this ticket on Friday. Sorry for the delay!

Jul 15 2019, 5:32 PM · TAZ 6
logan added a comment to T8411: Uptick in the number of RAMBo failures.

@TyTh good on ya

Jul 15 2019, 3:25 PM · TAZ 6
TyTh added a comment to T8411: Uptick in the number of RAMBo failures.

@logan
I have already set up an RMA to send him the new one-piece as well.

Jul 15 2019, 3:24 PM · TAZ 6
logan added a comment to T8411: Uptick in the number of RAMBo failures.

Since he's seeing the exact same issue as before the RAMBo was swapped, has everything else been checked? Specifically the internal and external bed power harness that @kent suggested checking in the ticket, which is a common failure point. If that hasn't been checked you should consider sending the new one-piece version along with the RAMBo.

Jul 15 2019, 3:19 PM · TAZ 6
TyTh added a comment to T8411: Uptick in the number of RAMBo failures.

@kent @Steven @sherylb
I am in the process of sending a new RAMBo to the customer above. Would you like to get the old one back for testing?

Jul 15 2019, 3:14 PM · TAZ 6
TyTh added a comment to T8411: Uptick in the number of RAMBo failures.

This is the customer from ticket ID 81753, mentioned above

Jul 15 2019, 12:44 PM · TAZ 6
lisa added a comment to T8411: Uptick in the number of RAMBo failures.

A customer is talking about this on social media. Referred to Ty to get more info and resolve his issue.

Jul 15 2019, 12:39 PM · TAZ 6

Jul 12 2019

logan added a comment to T8411: Uptick in the number of RAMBo failures.

Nevermind, I now see that it is a TAZ 5 so that wouldn't be as straightforward. Disregard

Jul 12 2019, 2:38 PM · TAZ 6
logan added a comment to T8411: Uptick in the number of RAMBo failures.

@Galadriel Ouch! Missing 90% of the LCD header. Have you suggested upgrading to 1.4? I'd send them the harnesses free of charge at this point given their trouble, personally.

Jul 12 2019, 2:37 PM · TAZ 6
Galadriel added a comment to T8411: Uptick in the number of RAMBo failures.

@kent @mjpelletier @Steven New one to add to this list, ticket ID 207,731. Customer bought a new 1.3L RAMBo from us and it came with pins missing, based on photos looks like the pins were never installed. Reference for purchase of board: SO103180.
We will be sending customer replacement board, would you like us to get this one back so we can check so serial number on the board or anything?

Jul 12 2019, 2:04 PM · TAZ 6
kent added a comment to T8411: Uptick in the number of RAMBo failures.

@mjpelletier @Steven Please let me know if you find a quality issue with these boards when we get a chance to look at them.

Jul 12 2019, 8:12 AM · TAZ 6
Galadriel added a comment to T8411: Uptick in the number of RAMBo failures.

@kent Here is a list of RMA's that resulted in either a printer coming back or a board being sent out:
RMA13333
RMA13336
RMA13337
RMA13340
RMA13351
RMA13362

Jul 12 2019, 7:29 AM · TAZ 6
Steven added a comment to T8411: Uptick in the number of RAMBo failures.

@TyTh we still haven't received any known failed boards in R&D to look at. @mjpelletier is back in the office on Tuesday so if we have a few of them to look at by then we can look them over.

Jul 12 2019, 7:19 AM · TAZ 6

Jul 11 2019

TyTh updated subscribers of T8411: Uptick in the number of RAMBo failures.

I have another customer (ticket ID 81753) with a failed RAMBo after a week of installing.

Jul 11 2019, 4:37 PM · TAZ 6