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External Drivers and Ramps (no replies)

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Ok... Quick question hopefully I can figure out how to word this properly.

I have ramps, I want to use external drivers.

Both ramps and the external drivers have jumper settings for microsteps.

Which scenario is correct?

1. Ramps Jumpers set to full step, external driver set to 1/8th (what i want to run)

2. Ramps jumpers to 1/8 external 1/8.

3. Ramps no jumpers (open) and use external jumpers to set?

Then, Firmware. I'm assuming once I have my jumper settings figured out, I can just adjust my "steps per mm" to make it come out correct?

Thank you all!

Z Series Motors (3 replies)

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Hi there, I'm trying to build a 3d printer and I've completed the physical part, I wired my x,y, 2z and extruder steppers and tried them all. all worked fine but the z ones. I'm using ramps 1.4 so I had 2 sets of pins on the card, first I connected my motors that way. They didn't work whatever I did, so I decided to wire my motors in series, made them work, I tried to adjust the pot on the stepper driver but did no good and whenever I command them to move in one direction there's like 10% chance that one of the steppers will go in reverse direction, whether I give + or - direction, there's a chance that they'll just do whatever it is on their mind. Here are some config lines I hope may be causing the problem.

const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Z_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool X_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Y_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Z_MAX_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
const bool Z_MIN_PROBE_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.



#define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0} // set the homing speeds (mm/min)

// default settings

#define DEFAULT_AXIS_STEPS_PER_UNIT {80.477,80.315,2531.96,758.7} // default steps per unit for Ultimaker
#define DEFAULT_MAX_FEEDRATE {300, 300, 5, 25} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {3000,3000,100,10000} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.

#define DEFAULT_ACCELERATION 3000 // X, Y, Z and E acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // E acceleration in mm/s^2 for retracts
#define DEFAULT_TRAVEL_ACCELERATION 3000 // X, Y, Z acceleration in mm/s^2 for travel (non printing) moves

// The speed change that does not require acceleration (i.e. the software might assume it can be done instantaneously)
#define DEFAULT_XYJERK 20.0 // (mm/sec)
#define DEFAULT_ZJERK 0.4 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)

It's the first time I'm building a printer so thanks so there's a big chance I've missed something on config. Thanks on advance

Totally lost control of RUMBA....due to a Stepper?? (2 replies)

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Let's see if i can explain myself correctly enough:

I have a printer with a RUMBA board and MARLIN 1.1RC7C in it that was working fine, until the other day that it was starting to perform weird heating issues. By rebooting octoprint and resetting the printer, even letting it cool down for a while, I managed to heat both extruder and bed fine. Then I tried to extrude filament but the motor didnt respond.

Next step was taking a multimeter and finding out power delivered to both hotend and heatbed was on the 11V range so I raised the powersource controller a bit, now getting close to 13v. Hotend and heatbed run just fine so far.

HOWEVER, returning to the motor in the extruder, I still find it does not move. The rest of motors, XYZ run just fine, so I think, let's swap E to the Y connector on the RUMBA and let's see if it's just a wiring issue. Motor on extruder would fail too...

I check continuity on all the extruder motor wires and continuity is OK.

BUT NOW Y WONT WORK!

Thinking its just a temporary "saturation" moment, I try with either X and Z with the extruder wires....

Result now is NONE of the XYZE motors work now!! I get "echo:busy: processing" when trying to move any of those repeatedly...


So question is: can a MOTOR, whose wires were reporting continuity, FRY the DRVs on the motherboard without heat, noise, spark nor smoke!?


OR

what else am I missing here?!?!?!


I don't want to swap the board and find out the motor on the extruder is a MB burner!


Thanks for any help!!!

Stepper motors will not move no matter what (1 reply)

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I'm extremely new to 3D printing but do have a working knowledge. I am running RAMPS 1.4 with Repetier firmware and absolutely nothing will make my stepper motors move. I bought a new controller and a new LCD (the RepRapDiscount Full Graphics Smart Controller) after my old controller broke (due to my accidentally switching the live and ground wires, which blew that controller) and was able to get the LCD configured and working with the Repetier firmware. My x-axis motor moved once (to the left) when I powered on the printer for the very first time with my old controller, and then never moved again. The firmware uploads to the board fine, and I've been trying to connect the four wires of the x-axis motor (I just chose one to focus on until I got it working) in different configurations to the board and have been using both the manual RepetierHost controls and the LCD controls and nothing will make this motor move. Its displayed position will change on the LCD and on my computer but the motor itself does nothing. It doesn't even get hot or make noise, though the motor itself does not seem to be damaged because when I connect an LED to its wires and manually turn the motor, the LED lights up (its an old test I found online). Could it be that theres something wrong with the way I configured my firmware? Are there any common settings that I might have missed when configuring the firmware that would make the motors not move?

How do diagnose RUMBA board not moving extruder motor (5 replies)

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There comes the day a printer stops extruding and after a brief research I notice the extruder motor is not spining.

This is what I've found so far:

- X, Y, Z axis move flawless.
- Taking measurements on all the DRV potentiometers (green on the below image, X, Y, Z, E0, E1, E2 from right to left) and all of them get the same voltage.
- It's NOT a faulty motor. I temp placed it on the X axis and it just spins fine
- Wires are fine, all of them tested and motor was tested on X fine so wires are ok.
- In red the average volts I get by moving X, Y and Z back and forth
- In yellow the average volts I get when I try to extrude, no matter if I measure E0, E1 or E2
- Top left is the RUMBA pin assignment I'm currently using on Marlin 1.1RC7

So I need to know how to diagnose further, the drivers or whatever is causing this weird behaviour!
This is specially weird that only Ex are not working, specially E3, which I never used before! !??


So how do I proceed with troubleshooting this?!?


[i.imgur.com]





Thanks!

Arduino CLK out to TMC429 Motion Controller ? (no replies)

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Hi,

I am new to Arduino2560. We are using TMC429 Motion controller,So need to provide 16Mhz clk. So kindly advice how to provide / which pin i need to connect from Arduino2560 to TMC429.

Thanks in advance.

Naveen

TMC2100 (SilentStepStick) for Mightyboard? (1 reply)

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Can I use the TMC2100 on a Mightyboard if I reconfigure the pins? Will the microstepping work and still be using the silent mode (stealthChop)?

I had one of my drivers fail and wondering if I can make my Flashforge Creator Pro 2016 model work a little more quiet...

Any thoughts on this?

Wiki
[reprap.org]
Github
[github.com]

Wich stepper motor for MKS TMC2100? (1 reply)

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I´m trying to find a good stepper motor for my custom CoreXY, that have a print bed of 600x400x400mm (for print RC car bodies). At first, I intend to use in the XY axis the **MKS** TMC2100 (LINK), that has this setup:

The calculation method of driver current: i=Vref*1.9/2.5
Default Vref is 0.65v, Max 1.3V,Min 0.
Default Current is 0.5a, Max current is 1A.


I selected previously the 17HS8401 stepper motor (LINK) that has 1.8A, but i´m afraid that it´s not a good match, since that this article (LINK) tells to select a motor with a current rating no more than 20% higher than the recommended maximum stepper driver current. This gives that the stepper motor shoud have about 1.2A. I think this motor will be a good mach for the DRV8825, but not the MKS TMC2100, right?

I´m afraid that this drive has a very low amp limit for the size of my printer, because i think that i need to have a high torque motor (44Nm+?). So, can anyone recommend some good stepper motor for this driver? Or i shoud give up the MKS TMC2100 and use some other drive with more amp limit?

Thanks!

Animatics Smart Motor sm2315d (2 replies)

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Hello all,
These Animatics motors are stepper motors (NEMA23) that include controller, encoder and IO all in the same package. Apparently they are used in CNC and others.
I got my hands on a bunch of these motors from an obsolete machine in the lab. It sounds like the perfect motors for a really nice printer but I can't see a way to control them. Any ideas?

All tested but steppers don't move + DRV8825 + Marlin (1 reply)

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Hi all,

I'm writing this message because I am desperate.
I built a cartesian printer and have a serious problem with steppers. All is OK except that.

Here's my problem :
When I connect one stepper to my RAMPS 1.4 and clic "start Motors" in Simplify 3D, the stepper makes some noises but does'nt want moving.
Wiring is OK (I spotted the two pairs : red/blue, green/black). I even tested all possibilities to connect to the RAMPS.
Power is OK : 12V 50A.
On my driver DRV8825 Vref is OK (I tested to turn the potentiometer : stepper makes differents songs but does'nt move).
All 3 jumpers are connected on the board (I tested without the jumpers : same result).
I also tried to connect a 4.7K (and a 10K) resistor between sleep and fault pins on the driver but no more result.

I don't know what I could make...

Steppers are Nema 17 1.7A (17HS4401) : [fr.aliexpress.com]
DRV8825 (semms to be m20b) : [www.banggood.com]

Do you have any idea to help me ?
This problem appears on all axes. So I make theses tests with one stepper (but tried some steppers to eliminate the stepper problem) and disconnected all others modules to the RAMPS.

I specify that motor doesn't move but it is very hard to turn manualy when it is started. So current should be OK.

Thanks a lot for any help.

Timer1 frequency limit (no replies)

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Hi,

I'm new of Marlin firmware but I use arduino for other projects.

Can someone explain to me the limit of 10KHz for the timer1 used by the stepper module to generete the step pulses?

If I need to move at an highest frequency can I change the timer frequency?

There is a detailed documentation of the code and the relative design?

Thanks a lot

Carlo

Stepper motor for my project (ACT motor GmbH 17HS5412-3) (3 replies)

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Hi every one.

I am in search of some stepper motors for my project, and I have a few in mind. However, I encountered these motors, and can not quite figure out whether they are workable (I can not really find anybody online, who have used them). I will initially use a RAMPS with A4988 drivers for my printer. Will they work with my controller?

ACT Motor GmbH 17HS5412-3
Step Angle 1,8°
Rated Voltage 4,16 V
Rated Current 1.3 A
Phase Resistance 3.2 Ohm/Phase
Phase inducturance 5.5 mH/Phase
Holding Torque 5200 g-cm
Detent Torque 2.8 N.cm Max
Rotor Torque 68 g- cm²
Lead Wires 4
Shaft Diameter 5,0 mm
Motor Length 48 mm
Motor Weight 0,36 kg

Alternatively, I'm going to use 17HS19-1684S1 (1.68A, 45Ncm)

/Hans

Motor works at 1/16 microstep, but not at 1/2, 1/4, 1/8? (no replies)

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I was trying to find the maximum step rate I could drive my extruder NEMA 17 motor (for fast retraction, basically).
I thought using 4 microsteps would afford ~4 times faster speed than 16 microsteps.

What I found instead was surprising: at 1, 1/2, 1/4, 1/8 I could stop the motor with my bare hands, no matter how low the speed was. Only at 1/16 it started working reliably.
The second thing that surprised me was there being no gain in speed: the motor made weird sound and skipped steps at approximately the same speed, as if microsteps did not matter.
Two other motors made me scratch my head even more: a "high torque low current" NEMA 17 showed the same behavior below 1/16, except its maximum stable speed was 2/3 that of the stock motor.
The third motor was Qunqi NEMA17 from Amazon, and it was going strong with every microstep setting, but also maxing out at what turns into 30mm/s at my extruder.

What am I missing? Why don't I see increase in maximum step rate and speed when I lower my microstep number? Why a motor would work at 1/16, but provide almost no torque at 1/8?
Controller is MKS Gen 1.3, drivers are LV8729, Vref is 0.4V (resulting in 0.8A per phase).

Weirdness after installing BLTouch (no replies)

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Not sure what I messed up, but I am having some very strange behavior after installing a BL touch.

All my prints stop after 5mm in the Z direction. Is there some setting I may have tweeked that limits print height to 5mm?

6-lead steppers: lower current = more torque?:S (2 replies)

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I found these steppers and want to know if it's a typo or real?

[attachment 95152 nema23-6lead.JPG]

I can only imagine their max. speed is much lower then?

NEW!? S109 (Toshiba TB67S109) Stepper Drivers?? (no replies)

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has anyone used these S109 / Toshiba TB67S109 Stepper Driver Modules?

[www.aliexpress.com]

The closest thing I could find was the TB6600 industrial driver modules... this is a 4A!!! onboard/polulu style module.

Quote

Main features:
  • use four layers of thick copper deposited gold PCB.
  • allow full step, half step, 1/4, 1/8, 1/16, 1/32 step.
  • maximum input voltage: 50V; maximum output current: 4A (at good heat dissipation condition).
  • equipped with large heatsink for better cooling effect.
  • high efficiency motor current control (as to advanced dynamic hybrid attenuation ADMD, ADMD Technology, its input current can be tracked more closely than the traditional mixed attenuation mode, so it can realize high-speed
  • motor control under high speed conditions.)
  • chip built-in error detection circuit: thermal shutdown (TSD), over current shutdown (ISD), and power on reset (POR).

I just ordered some stepper wire splitters from them a month ago and these didn't exist.
Seem like they'd be decent for NEMA23 based printers? 1/32 ain't bad.
been looking at the datasheets. their ADMD hybrid current control/chop mode seems pretty cool.

anyone see these or try similar drivers? would like to know how they fare. particularily with higher amperage motors too.

would a RAMPS board even be capable of running 4 motors at 4amp without external (break-out) VMOT pins?

Motor stops working after a few minutes (no replies)

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After a few minutes of printing or movement one of my Z axis motor stops moving. Then I switched off the supply and after waiting a few minutes I again tried moving the motor. It works for a few minutes and stops again!!!. What could be the problem?

motor AK17/1.10F6LN1.8 too weak? (2 replies)

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the motor i have is the AK17/1.10F6LN1.8, using Marlin i can only move then if they have no load and under a feed rate of 5 even when the driver is giving MAX amps to the motor, i did check if the wiring was right the multi-meter says yes, the psu is a 12v 5a like this one: aliexpress.com

datasheet: link


so cold it be that they are too week?

Great new SiLentStepStick TMC2208 is not silent ;( (no replies)

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[video]qkPHACyynKo[/video]

[youtu.be]


TMC2208 SilentStepStick not Silent ;(

low noise only at 30mm/s, but on speeds more than 60mm/s - noise like on this video

Sound volume increased for this video, so, some other sounds also hearable. But others sounds does't matter. The main problem in motors noise. :(

Any help?

Can You Solve This Trouble? (no replies)

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Hello~(:P)

Can I ask you some advice about DRV8801 which is full-bridge motor driver.
As the datasheet of DRV8801 shows: it provides a versatile motor driver solution with a variety of capabilities.The device contains a full H-bridge which can be used to drive a brushed DC motor,one winding of a stepper motor,or other devices such as solenoids. A simple PHASE-ENABLE interface allows easy interfacing to controller circuits. The questions I would like to ask that is :
The voltage of electronic machine is about 12.97V when non-loading. This situation is normal. However, the machine cannot operate when loading. The voltage aslo declined to about 6V. After I added a battery--12V, it’s OK to drive loading but the current here is just about 100mA. Why? You can see from the datasheet, its features are : LOW R MOSFETs (0.4ohm Typical0 and 8V--36V operating supply voltage range ?

How to solve this trouble? Please give me some feasible suggestions,thanks again !
Wishes~
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