Timeline for Debugging my Stepper Motor Driver circuit
Current License: CC BY-SA 3.0
19 events
| when toggle format | what | by | license | comment | |
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| Jan 3, 2016 at 16:29 | answer | added | Nick W. | timeline score: 6 | |
| Nov 28, 2015 at 20:41 | answer | added | Jose | timeline score: 1 | |
| Nov 8, 2015 at 7:32 | history | tweeted | twitter.com/StackArduino/status/663257845647982592 | ||
| Nov 8, 2015 at 5:31 | answer | added | johnb | timeline score: 2 | |
| May 4, 2014 at 19:03 | comment | added | Paul | Sure, @chrisStratton. Go ahead and migrate it. | |
| May 4, 2014 at 17:51 | comment | added | Chris Stratton | I don't think it should be deleted, but migration would be a good idea. | |
| May 4, 2014 at 17:41 | history | edited | Paul | CC BY-SA 3.0 |
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| May 4, 2014 at 17:39 | comment | added | Paul | @ChrisStratton: I know. I was debating posting it there or here. I wasn't sure if the issue was the arduino sketch, the electrical circuit, or something else. After the responses, it appears now that the problem is most likely the power supply. Do you recommend that I delete the question here and repost on the EE SE site? | |
| May 4, 2014 at 17:15 | comment | added | Chris Stratton | This question doesn't really have much of anything to do with arduino, and would be more likely to receive knowledgeable input on EE stackexchange. | |
| May 4, 2014 at 6:57 | comment | added | jfpoilpret | Have you tried your circuit without batteries but using a "better" power supply (eg some wall-wart 9V 2A)? That would allow you to ensure this is not a power issue (or the opposite). | |
| May 4, 2014 at 6:45 | comment | added | jfpoilpret |
I think you should also add digitalWrite(dir, LOW); in your setup(), I don't think it will change anything but it's preferrable to enforce the value you want at the beginning.
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| May 3, 2014 at 22:31 | history | edited | Paul | CC BY-SA 3.0 |
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| May 3, 2014 at 22:28 | answer | added | Anonymous Penguin | timeline score: 2 | |
| May 3, 2014 at 22:17 | comment | added | sachleen |
I've never used a stepper so I might have no idea what I'm talking about. buuut... See where you do digitalWrite(stp, HIGH); and low? that's clocking it. I think it wants you to leave it high.
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| May 3, 2014 at 22:13 | comment | added | Paul | @sachleen: Ok. I see. It says "to measure the current running through a single motor coil without clocking the STEP input". But I'm not sure what "without clocking the STEP input" means... Do you understand what that means? | |
| May 3, 2014 at 21:58 | comment | added | sachleen | Yeah it's the circular thing in the top-left of the bottom image (component side up). Not sure if you need to change it. Read the "Current limiting" section of the pololu.com to see how to see what kind of current its drawing. | |
| May 3, 2014 at 21:31 | comment | added | Paul | @sachleen I presume the trimpot is that tiny circular part that looks like a screw. Do I need to turn it to adjust the current draw? If so, how can I tell exactly how much current I'm actually getting? | |
| May 3, 2014 at 20:58 | comment | added | sachleen | The direction of the pins shouldn't matter.. it's just saying it may be hard to turn the trimpot with the black plastic part of the headers right up against it so it recommends doing it the way you did it. | |
| May 3, 2014 at 19:56 | history | asked | Paul | CC BY-SA 3.0 |