Your code is much stronger than the current stepper code floating around out there. Other code samples only allow high current on a single coil, but running the current across two at the same time makes perfect sense. There's a huge difference between 300 and 900 grams for most projects, including mine. Thank you!
@peileed4 жыл бұрын
this is 100% what I was looking for, someone lifting the hell out of it and not just reading specifications
@theintelarif Жыл бұрын
This is how to get the most out of a stepper motor. Your tests are impressive and brainstorming. Thanks for documenting your findings and sharing with everyone.
@PiefacePete464 жыл бұрын
Excellent video. There is one significant thing that is not well known, and it will influence your results! These motors have a friction clutch. The last gear in the internal gear-train is a snug fit on the brass output shaft; it is made so it will slip if too much load is asked of it. The motors are made to oscillate the vanes in air conditioners. On startup, the controller drives the motor until the vanes are forced against their end-stop, at which point the gear slips. This is a simple way of "zeroing" the vanes, without the cost and complication of electrical end-stops. If the motor gets hot, the gear will soften a little, and slip sooner, which explains why you could only lift smaller loads with a hot motor. If you can lock the gear to the shaft, I am sure you would get much better results, but I could not think of a satisfactory way of doing it, and in the end I gave it away. GOOD LUCK!!! :o)
@SamirSogay4 жыл бұрын
Thank you so much for this information
@silverback36334 жыл бұрын
There is a lot more to it, addition to the clutch, the ceramic magnet inside is very weak compared to other can type or hybrid variety. Also, the magnet strength varies between different manufactures. The plastic gear train eventually will give up if overloaded.
@PiefacePete464 жыл бұрын
@@silverback3633 : Yes, they are a very low-budget "throw-away" item. The gears are very weak looking... It's amazing they hold up as well as they do. Great for learning though.
@ChrisGWGreen5 ай бұрын
Thanks Samir. This is really useful. I want to build a turn table for a laptop and your tests show me its a very capable motor for the purpose.
@shrikman4 жыл бұрын
Great video! I appreciate your dedication and problem solving attitude, as well as your straightforward narration.
@guelweles3 жыл бұрын
Wow, that's a hell of studies to increase the torque of this little motor, I was exactly looking for this, built a project and during the assembling noticed that my 28By-48 5v can't handle the job, so I'll definitely try using it in bipolar mode, luckily I have some a4988 driver around, will try to use this one with 10V. I appreciate you posting such a brilliant material around this little motor, keep it up and cheers from Brazil.
@AlienRelics2 жыл бұрын
Make sure you convert to bipolar for the A4988. For non-PWM drivers, the center tap is always at 1/2 of the driving voltage and so little to no current flows through it. For PWM like the A4988, the centertaps are no longer always at 1/2 of the driving voltage. You can use much higher voltages with the A4988. It uses high voltage to speed how fast the current rises, then holds at that set current. 24V should be fine as long as you set the current to the stepper rated current. In fact, the A4988 relies on using a much higher voltage or you get no advantage from it over using the L293D.
@andrejziman8304 Жыл бұрын
Thank you man, you helped me a lot with my project! Using your code I managed to get a lot more torque from the motor.
@HasanGrkann5 жыл бұрын
this is exacly what im looking for. Thank you.
@martinshkreli96813 жыл бұрын
Yeah man. There is always a nice guy with cute accent who finally has the solution
@androsefernandes1343 жыл бұрын
Each step of the testing was well explained and the observations and results are very helpful. Keep it up!!!
@garethbarry382511 ай бұрын
Thank you so much for this very informative video - I needed a way to increase the torque for these for my flightsim throttle, for which I am using these stepper motors for moving autothrottles - simply using your code with the time delay set as you prescribed increased the torque to be perfect for my needs. An excellently presented video indeed.
@Ashishchabha4 жыл бұрын
One of best demonstration videos on KZbin...
@tinmisic69504 жыл бұрын
Great video, it really helped me. Thank you!
@nikolasbabetas34904 жыл бұрын
Thanks a lot! I am gonna try out tomorrow the things I learnt. You might have made my project a lot more efficient!!
@glumpfi2 жыл бұрын
Thanks for putting so much efford in this video, it helped a lot :)
@p.g.pg383 жыл бұрын
Merci Samir pour ce test très instructif!
@CiscoSaeed5 жыл бұрын
Good Job Samir keep going!
@paulrmoss Жыл бұрын
I like it,,, you saved me some time thanks.
@HeymynameisMitch2 жыл бұрын
Thanks man, really helped me out!
@gearscodeandfire Жыл бұрын
Great documentation!
@ukewarrior2 жыл бұрын
An excellent video. Well explained and well demonstrated.
@digihz_data Жыл бұрын
Good testing and info, thanks.
@johngrid97994 жыл бұрын
Excellent presentation, please post more
@emielleclercq3 жыл бұрын
I don't have much experience with stepper motors but was looking into using this motor for a simple robot arm. I would gear it down quite a bit as I don't mind speed. How accurate is it at high torque values? Some people claim it has a torque clutch or misses steps.
@SamirSogay3 жыл бұрын
The thing I learnt recently about this is that the output shaft can slip as the plastic and metal shaft is not glued. This particularly I noted at high torque. Maybe this is the torque clutch you are referring.
@lehieu665 Жыл бұрын
nice video! what is it called the thing you used to connect the 28bjy-48 and the rope? thank you
@tsugha3 жыл бұрын
subbed, very good video, serves the purpose well
@og60783 жыл бұрын
great video subed for this .
@SerajEmad2 жыл бұрын
السلام عليكم Very interesting video, can you please make some testing on the durability over time (as a unipolar), I want to use it as peristaltic pump but I'm not sure of how long it will last. Thank you brother
@wesleybrueland2 жыл бұрын
Jfc, at 4:10 there's a cracking noise that with headphones on made me nearly crap myself. Good tests though
@BeefIngot3 жыл бұрын
I do wonder if you were able to provide enough current at high voltage. I recommend a toolkit rc m8 or similar as a powersupply if you want an inexpensive one to test. It's also a useful lipo charger.
@BStateham4 жыл бұрын
Great work!
@SamirSogay4 жыл бұрын
Thanks. I have learnt a lot from your videos.
@SatyaGupta2 жыл бұрын
Can the 5V motor version modified to bipolar work with 12V??
@gregorypierson98013 жыл бұрын
Hello, very interesting demo. Do you know if it possible to use a sensitive touch button with a stepper motor?
@SamirSogay3 жыл бұрын
Any input should be fine with a microcontroller
@kamshorymt2 жыл бұрын
Hai. Thanks for the video. Can we multiply torque by using gear system?
@SamirSogay2 жыл бұрын
Definitely
@ameliabuns40583 жыл бұрын
with a current lmited a4988 in bipolar mode. does the torque differ between 5v and 12v? i'm running it at 200ma and i just BARELY lack enough power to lock my tools properly and the motor is already a bit hot when I run it.
@SamirSogay3 жыл бұрын
The torque differs but not considerable
@planktonfun14 жыл бұрын
Awesome testing
@fooballers7883 Жыл бұрын
Nice work...Next test if u want to carry out would be life of the gears... how long they last..Txs for an interesting video
@FDosais4 жыл бұрын
You are great brother👍🏻👍🏻
@viyugunmj359 Жыл бұрын
Super effort
@hansdegroot6523 жыл бұрын
Hi. Nice video. thank you but I have a question. At the start you show that you use a 5volt 28byj-48. I know you need to make it bi-polar to use with cnc shield and a4988 driver. But you say you use 10 volt now? to power the bi polar version? How does that work? Does that mean you need 24 volt for the 12 volt version? But I never see anyone use 24 volt power supplies. it is always 12 volt connected to the cnc shield not 10 or 24. After I saw your video I have been googling but I cannot find my answers. It seems the a4988 need 8 volt minimum. So you can never drive 5 volt stepper right even if it is 10 volts the 12 volts supply is to much. I am so confused now.
@SamirSogay3 жыл бұрын
Hi. My tests are to check the torque of the stepper in various conditions and may not be practical. For bipolar mode, we have twice the coil at our disposable so we apply 5v on each set of coil, thus our input voltage of 10v. For A4988 and 8v, since your stepper can take 10v (5+5), provide the a4988 10v. It may even take 12v but you run the risk of burning the motor as you are going above the ratings.
@hansdegroot6523 жыл бұрын
@@SamirSogay yes. After more research it seems you can use 12 volt. It is just that it is not very obvious in most videos. If I trim the ref voltage to 0.10 and it works. It doea not het hot neither does the a4988 and i did not yet add the heatsink. I do use a very cheap volt meter so it might wel be that my 0.10 is only 0.08. Thank you😁
@silviudc4 жыл бұрын
Have you tried the 12v motor in bipolar mode to increase the 15min roll up time for your blind? Looking to do that with my 180cm blind but 15mins is too long and curious to see if you can make it faster
@SamirSogay4 жыл бұрын
I didn't try the motor with bipolar mode as I didn't want to fiddle with running setup. What I suggest is that you can try a step delay of 15ms instead of 30ms which I am using. I didn't find much benefit of using 30ms delay over 15ms so with 15ms, the blinds up duration should half.
@silviudc4 жыл бұрын
@@SamirSogay Trying to determine which is the best option. Either motor on the blind itself (like your setup) or put a motor on the chain of the roller blind which means no need to worry about blind weight on the motor but won't look as neat
@SamirSogay4 жыл бұрын
@@silviudc If it is chain based, I think etter option will be connecting motor to chain.
@DhilTech3 жыл бұрын
great work
@Path_toPeaceislam Жыл бұрын
walaikum sallam tanks it great video i'm looking
@jorgecarvalho2033 Жыл бұрын
tks so much
@mp-xt2rg Жыл бұрын
That motor has a bit not in it than you're giving it credit for. The bearing design you're using is fairly draggy.
@jeredoesthings72014 жыл бұрын
Excellent video 👍 I am wondering about running the motor at 2ms delay in bipolar mode at 10V. By how much do you think the torque will reduce? Do you have a torque-speed curve from your tests? Thank you!
@SamirSogay4 жыл бұрын
I don't have a torque curve but it should be around 600gmfcm for 2ms delay
@albertjosephful4 жыл бұрын
👏👏👏👏👏!!! Muy bueno!!!
@playmarket86054 жыл бұрын
Thats all cool, but this stepper have torque only 0,3kg and if you would be incrase voltage or use bipolar mode after 10 minutes gears in motor reductor "says good bye" for you, and be broken... (
@ramazanaydemir38582 жыл бұрын
How can I increase the speed?
@lordlatch4 жыл бұрын
Excellent
@_DarkKnight4 жыл бұрын
How can we make this bipolar without using codes? Please reply.
@SamirSogay4 жыл бұрын
Any stepper motor requires microcontroller and microcontroller requires code
@_DarkKnight4 жыл бұрын
@@SamirSogay No I mean, can I just cut that middle connection of that motor to make it bipolar? I need help 🙏🙏
@SamirSogay4 жыл бұрын
@@_DarkKnight you will still need a different Code as bipolar motor requires 2 coil activation at the same time
@_DarkKnight4 жыл бұрын
@@SamirSogay Thank you so much sir😊😊
@peileed4 жыл бұрын
3:25 for some reason with the same motor, same voltage, same shaft and same code my motor cannot lift more than 500g (at 2amp, not sure how many amps you are using in that example, but 2 should be more than enough I think)
@SamirSogay4 жыл бұрын
Current requirement is more than enough. How exactly are you lifting the weight. Is it far away from the centre of rotation?