Search found 183 matches

by ABH
Thu Feb 01, 2018 3:08 pm
Forum: Software
Topic: LIN_ADVANCE = better extrusion control
Replies: 139
Views: 41903

Re: LIN_ADVANCE = better extrusion control

Hi Peter, I realize that my Marlin firmware isn't compiled with "DISTINCT_E_FACTORS" enabled, so my proposal above doesn't work. You cannot use different E-steps for two extruders in my firmware. I never had a need for that, so I didn't compile with this option. I guess firespeds firmware ...
by ABH
Thu Feb 01, 2018 11:54 am
Forum: Software
Topic: LIN_ADVANCE = better extrusion control
Replies: 139
Views: 41903

Re: LIN_ADVANCE = better extrusion control

N2plus dual and BondTech is not among the pre-compiled versions I have included, but you could use the std. N2plus dual: https://github.com/ABH10/Marlin-for-Raise3D-N-series/blob/1.1.x_Raise3D/N2PLUS-dual-1.1.8.firm I have compiled, and then just set the E-steps for your Bondtechs in ideaMaker, like...
by ABH
Thu Feb 01, 2018 8:55 am
Forum: Software
Topic: LIN_ADVANCE = better extrusion control
Replies: 139
Views: 41903

Re: LIN_ADVANCE = better extrusion control

You have pre-compiled firmware versions for the std. configurations in the link I provided. For the N2dual it is here: https://github.com/ABH10/Marlin-for-Raise3D-N-series/blob/1.1.x_Raise3D/N2-dual-1.1.8.firm So, unless you need special features, like the run-out sensor, then you should be able to ...
by ABH
Mon Jan 29, 2018 5:32 pm
Forum: Hardware
Topic: Project: The next heated bed
Replies: 41
Views: 19048

Re: Project: The next heated bed

I didn't have any cracks after printing. The parts are extremely tough with good dimensional accuracy. PC-max from Polymaker might be different than PC from other manufacturers. Polymaker recommend a heatbed temperature of 80 °C. I went up to 110 °C, mostly because PC-max really likes a lot of heat....
by ABH
Mon Jan 29, 2018 9:06 am
Forum: Hardware
Topic: Project: The next heated bed
Replies: 41
Views: 19048

Re: Project: The next heated bed

I recently started printing with polycarbonate (Polymaker PC-max) and I am actually very excited about it. It is recommended to use Buildtak and the PC-max sticks extremely well to it. So well that at times it is very difficult to get the model off the Buildtak without destroying the Buildtak. I pri...
by ABH
Mon Jan 29, 2018 7:07 am
Forum: Software
Topic: LIN_ADVANCE = better extrusion control
Replies: 139
Views: 41903

Re: LIN_ADVANCE = better extrusion control

I just used 20 mm/s and 70 mm/s for the calibration, although I never print with 70 mm/s. There just need to be a clear difference between the two speeds to show accelerate and brake regions. It is better to cover a larger speed range in the calibration than a too small range in order to increase th...
by ABH
Sun Jan 28, 2018 8:21 pm
Forum: Software
Topic: LIN_ADVANCE = better extrusion control
Replies: 139
Views: 41903

LIN_ADVANCE = better extrusion control

LIN_ADVANCE is a newer feature in the Marlin motion controller firmware. The filament between the nozzle orifice and the extruder gear isn't a stiff rod (or an enclosed volume of liquid), it acts like a spring, so the traditional Marlin firmware's assumption about a linear relationship between extru...
by ABH
Tue Jan 23, 2018 8:20 pm
Forum: Hardware
Topic: Filament Run-out Sensor Add-on
Replies: 89
Views: 23883

Re: Filament Run-out Sensor Add-on

Hmm.., the Marlin "FILAMENT_RUNOUT_SENSOR" feature isn't enabled in the official Raise3D motion controller firmware, so I don't see how this will work? Isn't the sensor connected to the Touchscreen computer?
by ABH
Sun Jan 21, 2018 8:28 am
Forum: Hardware
Topic: Z Banding on N1 with V2 Hot End
Replies: 39
Views: 7449

Re: Z Banding on N1 with V2 Hot End

The "wavelength" of the interference in a single layer seems to be around 6 mm. This happens to roughly correspond to one full-step of the extruder stepper motor which is 5.7 mm according to my calculation, based upon the gcode file you posted and assuming that you have the stock extruder ...
by ABH
Sat Jan 20, 2018 7:53 pm
Forum: Hardware
Topic: Improvements by using TMC2130 driver.
Replies: 82
Views: 40464

Re: Improvements by using TMC2130 driver.

I installed Watterott TMC2208 drivers for X and Y axis yesterday. At first I used HW configuration: MS1 and MS2 switches were set to "on" to tell the driver that the supplied steps are 1/16 microsteps. The default configuration means StealthChop mode with microPlyer. Motor phase current wa...
by ABH
Thu Jan 18, 2018 4:47 pm
Forum: Hardware
Topic: Improvements by using TMC2130 driver.
Replies: 82
Views: 40464

Re: Improvements by using TMC2130 driver.

Thank you TRINAMIC for answering my post. It is good to know that you have improved the current loop in StealthChop-2 in TMC22xx series drivers. I didn't know that there was a difference in StealthChop between the 1st and 2nd generation drivers. I will certainly try out the TMC2208. Maybe the Stealt...
by ABH
Sun Jan 14, 2018 4:34 pm
Forum: Hardware
Topic: Improvements by using TMC2130 driver.
Replies: 82
Views: 40464

Re: Improvements by using TMC2130 driver.

I think it is only trinamic that has this feature in their TMCxxxx series drivers. Never heard of any other drivers that does interpolation (= extrapolation).
by ABH
Fri Jan 12, 2018 10:42 pm
Forum: Hardware
Topic: Improvements by using TMC2130 driver.
Replies: 82
Views: 40464

Improvements by using TMC2130 driver.

I decided to post some findings and theories here, that technically inclined persons might find interesting. Raise3D printers are using Trinamic TMC2100 based stepper motor driver modules, configured to use the smooth and nearly silent StealthChop mode. An associated "feature" of the Steal...
by ABH
Fri Jan 05, 2018 6:44 pm
Forum: Hardware
Topic: some bondtech upgrade questions
Replies: 5
Views: 1580

Re: some bondtech upgrade questions

Q1: Just replace the thermocouple with a small piece of wire (10 - 20 mm).
by ABH
Sun Dec 24, 2017 8:37 am
Forum: Hardware
Topic: Heat bed temperature anomally
Replies: 24
Views: 5607

Re: Heat bed temperature anomally

I wouldn't trust readings from an infrared thermometer when measuring on anodized aluminium (top side of aluminum bed). Did you compensate for the surface having an emissivity below 1? The emissivity is expected to be lower than 1.0 even though there is some dye in the eloxation that will increase t...
by ABH
Sat Dec 23, 2017 12:38 pm
Forum: Hardware
Topic: Heat bed temperature anomally
Replies: 24
Views: 5607

Re: Heat bed temperature anomally

A couple of comments to your write-up: 1. I agree that the thermal conductivity of aluminum is so high that the temperature gradient across the aluminum part of the bed is insignificant. 2. The Marlin linearization table #11 assumes a pull-up resistor of 4.7 kOhm. You don't mention the size of the r...
by ABH
Thu Dec 21, 2017 11:19 pm
Forum: Hardware
Topic: Heat bed temperature anomally
Replies: 24
Views: 5607

Re: Heat bed temperature anomally

Here are some plots showing how well the used linearization table number 8 matches different combinations of thermistor type and pull-up resistor value.
Table8.png
by ABH
Thu Dec 21, 2017 10:40 pm
Forum: Hardware
Topic: Heat bed temperature anomally
Replies: 24
Views: 5607

Re: Heat bed temperature anomally

I'm sorry that I seem to have posted wrong information here. I assumed that the thermistor table given in the Marlin SW was correct. In the firmware source code it is stated that Raise3D printers are using a linearization table number 8. It is stated that this table is for a thermistor of type Visha...
by ABH
Wed Dec 20, 2017 9:38 pm
Forum: Hardware
Topic: How are your stepper motors wired?
Replies: 1
Views: 592

How are your stepper motors wired?

I never looked in detail at my stepper motor wiring, as I assumed that they were of course wired to use both windings of the phase coils. However, much to my surprise, my X and Y stepper motors were from factory wired to only use one of the windings of the phase coils, i.e. only half of the copper i...
by ABH
Wed Dec 20, 2017 9:27 pm
Forum: Software
Topic: Y-Axis Compensation
Replies: 1
Views: 673

Re: Y-Axis Compensation

I don't think it is correct, but it is the recommendation from Raise3D, so it is expected :D The only sensible use of X/Y axis compensation is for material shrinkage compensation (the printed model contracts when cooled down). The fact that Y is compensated and not X might be because Raise3D found t...

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