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MotorShield v2.3, How to connect my Brushless DC geared moto
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MotorShield v2.3, How to connect my Brushless DC geared moto

by Janbolo48 on Wed Jul 21, 2021 3:58 pm

Arduino UNO R3 with MotorShield v2.3, soldering complete.
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Motor is "Aobbmok High Speed 12V 600RPM Small Brushless Geared DC Motor" link https://www.amazon.com/gp/product/B07DZD3MY4/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
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I am ready to connect my motor to the MotorShield v2.3. Here is the wiring diagram from Aobbmok.
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Please let me know the correct placement of each wire to correctly connect my motor to the MotorShield.

Thanks and Best Moments!

Janbolo48
 
Posts: 4
Joined: Wed Jul 21, 2021 11:55 am

Re: MotorShield v2.3, How to connect my Brushless DC geared

by adafruit_support_bill on Wed Jul 21, 2021 4:58 pm

The motor shield is not designed for running brushless motors. Based on the wiring diagram posted, it looks like your motor has a built-in controller.

A real data sheet from the manufacturer would be helpful. But it looks like you would supply 12v power directly to pins 1 and 2. Then connect pin 3 to a GPIO pin on your Arduino to select the direction. And connect pin 5 to a PWM pin to control the speed. ("0v to 5v PWM" makes absolutely no sense. I suspect that they mean 0%-100% duty cycle at 5v).

And it looks like pin 4 might be a feedback pin with 9 pulses per revolution. You could connect that to any GPIO pin to monitor speed.

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Re: MotorShield v2.3, How to connect my Brushless DC geared

by Janbolo48 on Wed Jul 21, 2021 5:36 pm

Thanks Bill :)

Are you saying I should try the wiring you suggested and the motor might work correctly?

If so, I will send another reply to check my understanding of your wiring suggestions from the motor to the MotorShield.

If not, please suggest a dc motor that will work with the MotorShield with about the same speed range?
The motor will be turning a 1 lb helix mobile. Not much torque needed.

Best Moments,
Jan

Janbolo48
 
Posts: 4
Joined: Wed Jul 21, 2021 11:55 am

Re: MotorShield v2.3, How to connect my Brushless DC geared

by adafruit_support_bill on Wed Jul 21, 2021 6:26 pm

From what I can decipher from the wiring diagram provided, I suspect it should work connected as described above.

Amazon also has brushed DC gearmotors rated for similar speeds. But like many offerings on Amazon, the technical specs are a bit vague. I suspect this one would work with the shield. But it does not mention the stall current, so I'd want to test that before connecting a significant load to it.
https://www.amazon.com/Greartisan-Elect ... 02-8794038

Pololu carries a good selection of quality motors with accurate technical specifications. This one is rated for 580 RPM @ 12v and the stall current is 0.9A which is safe for use with the shield.
https://www.pololu.com/product/3250

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Re: MotorShield v2.3, How to connect my Brushless DC geared

by Janbolo48 on Thu Jul 22, 2021 12:52 pm

Thank you for the pointer to Pololu! I may return my Tsiny motor if it does not function well and purchase the motor you referenced.

Before doing so, is it possible to connect the Tsiny motor to the MotorShield. If so, Please advise which connectors I should use to connect the Tsiny motor to the MotorShield.

1. Red, power +
2. Black, power -
3. White, change of direction
4. Yellow, pulse signal
5. Blue, PWM

If not possible, I will return the Tsiny motor and purchase the Pololu motor. Thank you very much for your quick replies!

Janbolo48
 
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Re: MotorShield v2.3, How to connect my Brushless DC geared

by adafruit_support_bill on Thu Jul 22, 2021 2:26 pm

is it possible to connect the Tsiny motor to the MotorShield.

It is possible to physically make your connections to the shield board. But you would not actually be using the shield to control the motor. You would just be using the Arduino GPIO pin signals via the breakout holes on the board.

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Re: MotorShield v2.3, How to connect my Brushless DC geared

by Janbolo48 on Thu Jul 22, 2021 8:11 pm

Thank you for helping me understand there is N0 "brushless" DC motor support on the MotorShield v2.3.
Thanks too for the pointer to the pololu company and their products -- impressive!

I will purchase the https://www.pololu.com/product/3250

All the Best,
Jan

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Posts: 4
Joined: Wed Jul 21, 2021 11:55 am

Please be positive and constructive with your questions and comments.