tag:blogger.com,1999:blog-4353598380586170203.post5699686665545911976..comments2023-11-23T16:53:55.680+01:00Comments on Jangeox' blog: Change unipolar 28BYJ-48 to bipolar stepper motorJangeoxhttp://www.blogger.com/profile/10815697810434386689noreply@blogger.comBlogger46125tag:blogger.com,1999:blog-4353598380586170203.post-17426611619755609012020-08-29T09:38:03.744+02:002020-08-29T09:38:03.744+02:00เจาะลึกประเด็นเด็ด ดราม่าข่าวกีฬาลูกหนัง
บรูโน่... เจาะลึกประเด็นเด็ด ดราม่าข่าวกีฬาลูกหนัง <br /><a href="https://manu01122.blogspot.com/2020/08/1_28.html" rel="nofollow"> บรูโน่ ชอบขัดใจ โซลชาอยู่ 1เรื่อง </a>มโน เอาเองhttps://www.blogger.com/profile/07048743272464383784noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-28070727224124982382020-08-26T14:11:42.312+02:002020-08-26T14:11:42.312+02:00Update News Barcelona
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A good article gives a lot more knowl...<a href="https://www.bloglovin.com/@jangjangs/-joker-6125499" rel="nofollow">สล็อตออนไลน์</a><br />A good article gives a lot more knowledge about this. I will continue to support your work. Thank you.<br /><a href="http://betwayonline.net/" rel="nofollow">http://betwayonline.net/</a><br /><a href="https://howtoeasy.net/" rel="nofollow">https://howtoeasy.net/</a>jangjanghttps://www.blogger.com/profile/01856637978883947195noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-75147645429855385772020-08-20T13:58:57.636+02:002020-08-20T13:58:57.636+02:00หวยใต้ดิน
A good article gives a lot more knowledg...<a href="https://jangjangs.hatenablog.com/entry/2020/08/20/202901" rel="nofollow">หวยใต้ดิน</a><br />A good article gives a lot more knowledge about this. I will continue to support your work. Thank you.<br /><a href="http://betwayonline.net/" rel="nofollow">http://betwayonline.net/</a><br /><a href="https://howto4you.xyz/" rel="nofollow">https://howto4you.xyz/</a>jangjanghttps://www.blogger.com/profile/01856637978883947195noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-14105136761630795512019-09-30T15:40:53.706+02:002019-09-30T15:40:53.706+02:00Hi, what is the max. power(Volt) we can supply the...Hi, what is the max. power(Volt) we can supply the motor (28byj-48)<br /><br />I made all the same, same results :P<br /><br />Many thanksMasoudQasemhttps://www.blogger.com/profile/14626813211469334450noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-55188450106470254922019-02-25T18:13:32.357+01:002019-02-25T18:13:32.357+01:00Thanks for this.
It is still possible to power th...Thanks for this.<br /><br />It is still possible to power the motor without this modification and the red wire unattached, but I notice a definite increase in torque (and smoothness) with the connection cut on-board. (Perhaps there is alternate sequence?)<br /><br />Based on your schematic, with the internal connection in place from the middle of A--B to middle of C--D coils, pulling A-B high with C-D low will leak current out from the middle of A-B through the C-B coils. Right?Martin Fitzpatrickhttps://www.blogger.com/profile/16385392922596026815noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-24934705925861013452018-09-27T08:59:02.220+02:002018-09-27T08:59:02.220+02:00Hi, It does work with an original motor for me(not...Hi, It does work with an original motor for me(not modified). It also works if you connect pin 1 and 9 (enable pins) to 5volt instead of 9-12 volt. I use 12 volt and it works very well. ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-33316821699507079202017-09-07T15:12:46.659+02:002017-09-07T15:12:46.659+02:00Hi there, just became aware of your blog through G...Hi there, just became aware of your blog through Google, and found that it's truly informative. I am gonna watch out for brussels. I'll be grateful if you continue this in future. Numerous people will be benefited from your writing. Cheers! <a href="https://allofcraig.org/" rel="nofollow">all of craigslist</a>Travis Smithhttps://www.blogger.com/profile/01580537840569996983noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-11506642529092931982017-08-15T01:18:43.955+02:002017-08-15T01:18:43.955+02:00hice el mismo procedimiento , pero ahora mis motor...hice el mismo procedimiento , pero ahora mis motores vibran bastante , por allí me dijeron que al cortar el común del motor unipolar para convertirlo en bipolar la tensión aumenta , sera cierto ?rubbenlegzhttps://www.blogger.com/profile/17495433990646151936noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-69487842421894595282017-03-13T15:52:20.702+01:002017-03-13T15:52:20.702+01:00bom dia fiz a troca dos fios mas o motor esquenta ...bom dia fiz a troca dos fios mas o motor esquenta muito Anonymoushttps://www.blogger.com/profile/05118052820429103739noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-80623864968544947162017-01-26T16:52:55.339+01:002017-01-26T16:52:55.339+01:00I have to say that you had a very clever idea! I m...I have to say that you had a very clever idea! I m not into stepper motor, but i will need one for a project where i will need some sort of precision (astro tracker) cutting as you shown will I be able to use the microstepping?Anonymoushttps://www.blogger.com/profile/17784302363166712014noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-40266268773771452362016-06-25T13:54:36.168+02:002016-06-25T13:54:36.168+02:00Thanks for your input, that's very usefulThanks for your input, that's very usefulJangeoxhttps://www.blogger.com/profile/10815697810434386689noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-16719689753645832432016-06-12T05:28:21.564+02:002016-06-12T05:28:21.564+02:00You dont have to do that, just find apropriate pin...You dont have to do that, just find apropriate pin output to use. I use 28by,20by,24by,3by without disconnect the red cable. it doesnot matter.<br /><br />I have simulate on electronic workbench, and yes it doesnot matter, no current go through the red cable at all.<br />Anonymoushttps://www.blogger.com/profile/00906638544145953194noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-46389270028401050702016-06-03T09:00:32.843+02:002016-06-03T09:00:32.843+02:00That is not entirely true, there may be some loss ...That is not entirely true, there may be some loss in torque if you do that. On a DC level, it is true that the center of the coils should remain on the same middle voltage. When the motor is turning, you need to consider the coils acting as coils, not as resistors. Coils resist changes in current by creating a voltage across its pins. This may be different for each coil as the motor turns and resists its load. This is an old post, I always wanted to test the current running through both center connections, but I haven't tried it until now. So I really have no idea what influence (if any) this might have on the torque of the motor. Anyway, in case of this post with my driver chip, I do want to cut the connection because I want a 'real' bipolar motor that will also work in half stepping or microstepping (in that case, with my setup you would create a shortcut).Jangeoxhttps://www.blogger.com/profile/10815697810434386689noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-45772688768981009472016-06-02T12:55:55.776+02:002016-06-02T12:55:55.776+02:00Do you even need to open the cover? If you just l...Do you even need to open the cover? If you just left the center write unconnected on the far end, and always drove both ends of both coils with opposite polarities, wouldn't the centers of the coils remain at some middle voltage such that it didn't matter whether or not they were connected?Unknownhttps://www.blogger.com/profile/04081441220701396598noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-18285261388359792112016-06-02T12:55:25.034+02:002016-06-02T12:55:25.034+02:00Do you even need to open the cover? If you just l...Do you even need to open the cover? If you just left the center write unconnected on the far end, and always drove both ends of both coils with opposite polarities, wouldn't the centers of the coils remain at some middle voltage such that it didn't matter whether or not they were connected?Unknownhttps://www.blogger.com/profile/04081441220701396598noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-52575010530547214852016-03-13T16:14:08.728+01:002016-03-13T16:14:08.728+01:00The random direction is typically something you se...The random direction is typically something you see when one of four wires is not connected or one of four stages of your driver is broken. I don't know these values, I don't use drivers with the logic built in. Jangeoxhttps://www.blogger.com/profile/10815697810434386689noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-10306891258914570292016-03-13T15:57:19.120+01:002016-03-13T15:57:19.120+01:00I realize this is pretty old post but I just found...I realize this is pretty old post but I just found couple of these steppers in my "trash bin" and wanted to do something with them. I made them bipolar and got them working with easydriver in fullstep mode. Except that they do not turn in the right direction reliably. It's pretty random in which direction the motor starts turning and I can change the direction while the motor is moving if I turn it the other way with my fingers. Any idea what could be causing this? Also do you remember what values did you use for 'steps/revolution' and 'feed' as I think it could be somekind of timing problem with the pulses? Thanks.ImVeryVeryStupidhttps://www.blogger.com/profile/16574595818841789817noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-45731099281802272782016-02-20T10:23:46.638+01:002016-02-20T10:23:46.638+01:00great ! great ! Jangeoxhttps://www.blogger.com/profile/10815697810434386689noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-48574701022627758302016-02-20T10:20:57.854+01:002016-02-20T10:20:57.854+01:00I found the problem. I was wiring the motor up wro...I found the problem. I was wiring the motor up wrong, connecting pink/blue and orange/yellow instead of pink/orange and blue/yellow. It's working now.Anonymoushttps://www.blogger.com/profile/12595470660505190528noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-91526061196013995092016-02-20T10:11:51.972+01:002016-02-20T10:11:51.972+01:00Well that's good, then.
I double-checked my w...Well that's good, then.<br /><br />I double-checked my wires connecting the driver board to the motor's connector, and they check out. I tried my other 28BYJ-48 motor after making the same modification, and got the same results. It seems unlikely that both motors are defective in the same way. Maybe I'm wiring them up wrong?Anonymoushttps://www.blogger.com/profile/12595470660505190528noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-80638052468866909142016-02-20T09:56:22.097+01:002016-02-20T09:56:22.097+01:00After the modification, 9V is perfectly within spe...After the modification, 9V is perfectly within specs (actually 10V , 2 x 5V of original coils in series). If you apply 9V before modification, it just gets a bit warm but it works fine.Jangeoxhttps://www.blogger.com/profile/10815697810434386689noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-82511989681067617402016-02-20T09:45:46.771+01:002016-02-20T09:45:46.771+01:00I tried a different bipolar stepper and it works f...I tried a different bipolar stepper and it works fine, so I'm guessing it's a bad wire connection with my 28BYJ-48.<br /><br />What happens to a 28BYJ-48 if it's powered at 9V?Anonymoushttps://www.blogger.com/profile/12595470660505190528noreply@blogger.comtag:blogger.com,1999:blog-4353598380586170203.post-75173114541295368272016-02-20T09:38:46.075+01:002016-02-20T09:38:46.075+01:00What you get is typical behaviour when one of the ...What you get is typical behaviour when one of the four wires is not connected (or one of the channels of the driver is broken)Jangeoxhttps://www.blogger.com/profile/10815697810434386689noreply@blogger.com