Search found 12 matches

by Row_CZ
Fri Nov 09, 2018 10:02 pm
Forum: Help requests / Purchasing assistance
Topic: DOLLY unsolvable X layer shift (I am desperate)
Replies: 12
Views: 993

Re: DOLLY unsolvable X layer shift (I am desperate)

I checked that video but I am not using stealthchop mode. And about mechanical issues... everything runs smooth as a butter on a hot plate :( I slightly added more current to the stepper and it helps for now. But it is kind of "russian style solution - when hammer doesn't help try bigger one". I don...
by Row_CZ
Wed Nov 07, 2018 6:57 pm
Forum: Help requests / Purchasing assistance
Topic: Yet another Dolly builder.
Replies: 13
Views: 1797

Re: Yet another Dolly builder.

Oh, my fault, I missed that it was during hotend PID tuning and for some unknown reason (probably becasuse of the calucated power) I mixed up hotend and heated bed resistance... then yes... it will be probably the 5A fuse, becaouse in that case your hot end burns about 200W which is really mad. :D A...
by Row_CZ
Wed Nov 07, 2018 12:10 am
Forum: Help requests / Purchasing assistance
Topic: Yet another Dolly builder.
Replies: 13
Views: 1797

Re: Yet another Dolly builder.

If your heated bed have realy 0.7 Ohm (it can be correct) in a circuit, according to ohm's law it must drains more then 17 Amps (17.14 to be precise) which is more then your 16 Amp power source can handle for a long time... and it is also a hell of a current for most chinese mosfets (and fuses, resi...
by Row_CZ
Tue Oct 30, 2018 6:16 pm
Forum: Help requests / Purchasing assistance
Topic: DOLLY unsolvable X layer shift (I am desperate)
Replies: 12
Views: 993

Re: DOLLY unsolvable X layer shift (I am desperate)

Great... but buddy... I would like to find a solution to my problem and adding irrelevant replies to this topic will not help. Thanks :roll:
by Row_CZ
Fri Oct 26, 2018 7:12 pm
Forum: Help requests / Purchasing assistance
Topic: DOLLY unsolvable X layer shift (I am desperate)
Replies: 12
Views: 993

Re: DOLLY unsolvable X layer shift (I am desperate)

Driver temperature should't be a problem. It wasn't a problem even with Vref 1.4V when 1 of Z steppers attacked surface temperatures about 110°C and melt down my printed bracket. But I measured temperature on heatsink of all drivers just to be sure and it is about 40°C on all of them when it is cool...
by Row_CZ
Fri Oct 26, 2018 4:09 pm
Forum: Help requests / Purchasing assistance
Topic: DOLLY unsolvable X layer shift (I am desperate)
Replies: 12
Views: 993

Re: DOLLY unsolvable X layer shift (I am desperate)

Hi, it is always just one shift at a time... usually in different hight, sometimes it happen few times for a print. For example on the foto... on the left one it is not so visible because i "postprocessed" that print for functional test but there was a shift on start in about forth or fifth layer an...
by Row_CZ
Tue Oct 23, 2018 10:02 pm
Forum: Help requests / Purchasing assistance
Topic: Firmware Update in Hex
Replies: 1
Views: 296

Re: Firmware Update in Hex

Hi, I am not sure if it is even possible as a user read values from firmware directly in hex. But if you need to define just some parameters, you should be able to dig them from the internet or find out yourself. Now I am not sure which parameters you can get but you can send a M503 command and you ...
by Row_CZ
Tue Oct 23, 2018 8:09 pm
Forum: Help requests / Purchasing assistance
Topic: DOLLY unsolvable X layer shift (I am desperate)
Replies: 12
Views: 993

DOLLY unsolvable X layer shift (I am desperate)

I built my dolly MK2 prusa clone. It is 24V with MKS gen 1.4 board and TMC2100 drivers, runs Marlin (1.6 but I am not sure now). Steppers are (Czech made) microcon sx17-1005 (0.52Nm) for all axis and microcon sx17-1003 for extruder (0.3Nm). Vref is set to 1V so it should run on 0.7A and 1A peak. Mos...
by Row_CZ
Tue Oct 23, 2018 6:06 pm
Forum: Help requests / Purchasing assistance
Topic: Prusa I3 MK3 FAN Whining Noise
Replies: 2
Views: 617

Re: Prusa I3 MK3 FAN Whining Noise

If it is a "coil whine" type of sound, I had that type of issue on my Prusa clone. I solved it with Marlin setings when PWM frequency is doubled (or something like that... it is a while so I am not sure but it is settings that is described as solution with this kind of problem) but if you have an or...
by Row_CZ
Thu Sep 06, 2018 4:21 pm
Forum: Help requests / Purchasing assistance
Topic: One of the Z axis stepper overhating
Replies: 0
Views: 304

One of the Z axis stepper overhating

Hi, I recently built my "Dolly" and I have a curious problem. I found that one of my stepper is hotter then others and wierd is that is the one from the pair of Z axis steppers. After some tuning of the max current, E stepper is about 45°C and all movement steppers sits about 65°C (including left Z ...