This man spent more than a week helping me solve my printer problems, updating for me the version of my firmware, tolerating my terrible English and politely answering my questions and giving me advice. He deserves more subscribers and likes. Let 's support his guys like he supported me.
Just a heads up, if you get yourself a pair of leads with crocodile clips, you can clip the earth or black lead in place on the 5v input, then clip the red or live lead from multimeter to the screwdriver and as you turn you will get a reading simpler and very accurate.
If I am driving two motors off one driver (i.e. Z-axis on Core XY machine) what compensation to the target voltage is recommended to start with? I assume similar general principle applies as far as working from conservative setting and increasing until skipping steps is eliminated but not to point where motors run beyond warm to touch. Just don't know if I should assume doubling the voltage if driving two motors is valid assumption.
I usually adjust the z current about half more than the rest of the motors current so if my x and y are running at .6v i would run the z motors between .8 and .9
Small town Bassin' the current on a stepper is prescribed by the manufacturer, if you don't have a specs sheet, I would start around .75v and dial up slowly until you stop Loosing steps, you want the motors to run lukewarm. On the pancake stepper remember is a .9 phase, so it will run warmer than a full size stepper, I would start somewhere around .65v and go you from there. Good luck
Ive been trying to figure this out. the math is crazy. it says I can go 1.0 or .9volts to be safe but it will not run faster then 400 federate what ever that is!? I have 2.8v 2.0amp motors and they seem to run fine at .8 What I know from simple power tools is not to use to little power/long thin cord.
The TMC family doesn't requiere the step divider jumpers that are utilized with Texas instruments drv8825, or the Allegros A4988. This jumpers are located directly beneath the drivers on the board
@@forward3dprinting796 somehow I changed the power supply of the Arduino. I used a 9V battery and it was horrible. But then I changed it to a normal power supply and it works just fine. Not sure why tho.. Thanks!
Yes. But i would be wrong not to mention you would get way better prints if you look into the TMC family, also the amp rating matching is not necessary, is more so you know the motor limits to know the proper current to run the motor with out getting hot or not having enough power to take the step.
@@forward3dprinting796 i only hear noise when i try to run it even when i adjust the current properly it just wont move, i think it better i get a stepper motor with rating of 700mA
@@GodsWorshipper777 mhh. Last test when you give it the command to move do the motors lock in place or are you free to manually move the any of the axis
they are able to provide a little more current than the clones of the a4988, original a4988 have the same current range, but if you are looking for better prints, silent sticks is what you want
@@Anton-sz6ef dial it back down, depending on the manufacturer, it may be broken, or it may have no end limit, which means ince it has reached the top current it goes back down tonthe lowest, again it being broken may also be an option
How do I know that I am sending the right amount of current ? Say my stepper specs says 600mA ? By looking at the 12v -1A DC adapter, I know that it is 1A output from the adapter, but now how can I check/test that I am feeding 600mA in my above case ? I can tune the Pot on the driver board, but when do I know it is 600mA. ( I can measure the V in my Multimeter, and I have the formula V=IR ready in hand at this time) Would appreciate any response(s). I tested it on a Stepper ( Minebea ) which is rated at 1A, and I fed in 12v. Using the formula above, the R should be 12, but when I measured it on my multimeter, it says 1K ohm !
A4988, and I have done the same with DRV8825. But mostly A4988. and I can tune the pot to view the voltage by connecting the ends as shown in your video.
When i make a 3D printer with CD stepper motor, my stepper motor is very hot ....is that because of of adj current?If you know smt about that please help me out.
@@forward3dprinting796 sir..I have tested using multimeter and it is showing aroung 0.57-0.6 . I am also using DVD stepper driver .. So should I have to move cw Or ccw to reduce heating?. Plz help
@@sagarbhosle3596 it all depends on the motor, the drv8825 from Texas instruments has the potentiometer inverted, so clockwise turns the current down, and obviously counter clockwise turns it up, however you also have to have an idea of the optimal running conditions of the stepper motor, most manufacturers list the ideal conditions to run the motor
This man spent more than a week helping me solve my printer problems, updating for me the version of my firmware, tolerating my terrible English and politely answering my questions and giving me advice. He deserves more subscribers and likes. Let 's support his guys like he supported me.
how to contact him ?
Hmm
Thats amazing
Amazing clear to the point video. Looks like i found a new great content creator to follow 🎉🎉
Thanks. This helped me to go from a harsh, noisy and mostly overheated printer to a smooth, silent and properly cooled one.
Just a heads up, if you get yourself a pair of leads with crocodile clips, you can clip the earth or black lead in place on the 5v input, then clip the red or live lead from multimeter to the screwdriver and as you turn you will get a reading simpler and very accurate.
Paul Thomas I just ordered some😊
Thank You for this!
good video thanks buddy
If I am driving two motors off one driver (i.e. Z-axis on Core XY machine) what compensation to the target voltage is recommended to start with? I assume similar general principle applies as far as working from conservative setting and increasing until skipping steps is eliminated but not to point where motors run beyond warm to touch. Just don't know if I should assume doubling the voltage if driving two motors is valid assumption.
I usually adjust the z current about half more than the rest of the motors current so if my x and y are running at .6v i would run the z motors between .8 and .9
little confused here. the data sheet for my motor say 3.7v or 3.6v is this what you are referring to when you say rated voltage?
If I'm using a 1.8 amp nema 17, what should I set the a4988 to? Same question for a 1 amp pancake
Small town Bassin' the current on a stepper is prescribed by the manufacturer, if you don't have a specs sheet, I would start around
.75v and dial up slowly until you stop Loosing steps, you want the motors to run lukewarm.
On the pancake stepper remember is a .9 phase, so it will run warmer than a full size stepper, I would start somewhere around .65v and go you from there.
Good luck
Ive been trying to figure this out. the math is crazy. it says I can go 1.0 or .9volts to be safe but it will not run faster then 400 federate what ever that is!? I have 2.8v 2.0amp motors and they seem to run fine at .8
What I know from simple power tools is not to use to little power/long thin cord.
Feedrate is the actual limit that the machine can print, 400mm/s feedrate is incredibly fast never seen a printer print that's fast
"remove all the jumpers"? What do you mean?
The TMC family doesn't requiere the step divider jumpers that are utilized with Texas instruments drv8825, or the Allegros A4988.
This jumpers are located directly beneath the drivers on the board
I have a bit of a problem...my drivers are only showing 3V so I can't adjust them for some reason. Anything I should try ?
Which set do you have?
@@forward3dprinting796 somehow I changed the power supply of the Arduino. I used a 9V battery and it was horrible. But then I changed it to a normal power supply and it works just fine. Not sure why tho.. Thanks!
@@Anton-sz6ef the arduino processors usually run 5v
@@Anton-sz6ef I am glad it works. Ow tho
My stepper is rated 2A, do you think i can run it with my A4988 driver which has a max current rating of 2A as well?
Yes. But i would be wrong not to mention you would get way better prints if you look into the TMC family, also the amp rating matching is not necessary, is more so you know the motor limits to know the proper current to run the motor with out getting hot or not having enough power to take the step.
@@forward3dprinting796 i only hear noise when i try to run it even when i adjust the current properly it just wont move, i think it better i get a stepper motor with rating of 700mA
@@theconcheror5691 wait the motor wont move at all, something may be amiss with the connections, is this a new build
Could low current be causing my steppers not to move?
As in pausing while printing or as in failure to move?
@@forward3dprinting796 not moving at all
@@GodsWorshipper777 do they make a vlicking noise or no sound at all?
@@forward3dprinting796 no sound at all
@@GodsWorshipper777 mhh. Last test when you give it the command to move do the motors lock in place or are you free to manually move the any of the axis
Hi, does 8825 better than 4988?
they are able to provide a little more current than the clones of the a4988, original a4988 have the same current range, but if you are looking for better prints, silent sticks is what you want
THK U ! I´ll try them!
I think I've turned my potentiometer too far...it spins all around...now what ?
Which specific driver?
@@forward3dprinting796 DRV8825
@@Anton-sz6ef dial it back down, depending on the manufacturer, it may be broken, or it may have no end limit, which means ince it has reached the top current it goes back down tonthe lowest, again it being broken may also be an option
How do I know that I am sending the right amount of current ? Say my stepper specs says 600mA ?
By looking at the 12v -1A DC adapter, I know that it is 1A output from the adapter, but now how can I check/test that I am feeding 600mA in my above case ? I can tune the Pot on the driver board, but when do I know it is 600mA. ( I can measure the V in my Multimeter, and I have the formula V=IR ready in hand at this time) Would appreciate any response(s).
I tested it on a Stepper ( Minebea ) which is rated at 1A, and I fed in 12v. Using the formula above, the R should be 12, but when I measured it on my multimeter, it says 1K ohm !
Real quick, how did you arrived to the number 12 for resistance
R = V/I,
R = 12v/ 1A ( These are the ratings on the DC 12V wall adapter )
R = 12 ohm ? (Is this about right )
@@kiranshashiny which stepper drivers are you running
A4988, and I have done the same with DRV8825. But mostly A4988. and I can tune the pot to view the voltage by connecting the ends as shown in your video.
@@kiranshashiny I finally understand, the motor is rated to an specific voltage, that is the voltage you use for the calculation
When i make a 3D printer with CD stepper motor, my stepper motor is very hot ....is that because of of adj current?If you know smt about that please help me out.
Yes sir current would be the culprit, try adjusting it according to the motos ratings, if not aveliable, start at a 1.00 and dial down from there
@@forward3dprinting796 thanks sir
@@forward3dprinting796 sir..I have tested using multimeter and it is showing aroung 0.57-0.6 . I am also using DVD stepper driver .. So should I have to move cw Or ccw to reduce heating?. Plz help
@@sagarbhosle3596 it all depends on the motor, the drv8825 from Texas instruments has the potentiometer inverted, so clockwise turns the current down, and obviously counter clockwise turns it up, however you also have to have an idea of the optimal running conditions of the stepper motor, most manufacturers list the ideal conditions to run the motor