Updated schematics for a BLDC motor controller - Electronics Forums

Author Topic: Updated schematics for a BLDC motor controller  (Read 41353 times)

paulosfjunior

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Re: Updated schematics for a BLDC motor controller
« Reply #45 on: January 03, 2014, 05:04:43 AM »
I honestly do not know why the motor running slowly, I have to go testing to see if it works.
Any new notice here.

thank you

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Re: Updated schematics for a BLDC motor controller
« Reply #45 on: January 03, 2014, 05:04:43 AM »

jbachhal

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Re: Updated schematics for a BLDC motor controller
« Reply #46 on: March 31, 2016, 12:55:55 AM »
Hello.
I recently built the circuit shown in the schematic and connected it to a voltage supply (3.3V) and the arduino programmed using the code provided. After the system is powered up and the potentiometer is adjusted, the motor simply jolts a tiny bit back and forth. I connected LED's in series with the motor windings in hopes of seeing the phase of the system. The bulbs illuminate however, are not in any sort of three phase pattern, instead light up in a strange pattern with a substantial gap before the next "cycle" starts. If you have any idea as to why this would be happening, please let me know as soon as possible as this project is one that must be completed very very soon.
Thank you for any help. It is greatly appreciated.

Kindly

Jannat

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Re: Updated schematics for a BLDC motor controller
« Reply #47 on: March 31, 2016, 09:39:05 PM »
Jannat, see if you can increase the stepDelay value so the phases are changing slower, and perhaps the pattern may be more clear . One other think I would suggest - comment out the serial communication code around line 71 in the code and re-compile and upload into Arduino again. That serial comm is too slow for the winding phase change and does mess up the normal motor operation. It was there for debugging, I don't know why I didn't take it out of the final code. It's been a couple of years since, I don't remember finer details of the project all that clear now.

 

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