12v 2A brushless dc motor control, options

Other Hardware Motors, Mechanics, Power and CNC
1

Hi,

I bought a 5-12v WADDA water pump to make a quick prototype project. Really expensive but I need to be a bit quick.

I got hold of a adafruit motor shield v1

And following this tutorial I manage to get another 12dc motor working with the shield.

But not the Wadda pump (the pump works fine connected directly to the power supply). Is this due to it being brushless?

Can I get it working with the shield I have?

Or other shields?

Else, can I build a circuit?

Im in a hackerspace at the moment so I got electronics and equipment, just need to know what to do.

Cheers

2

Yes, it is! Being brushless is telling you it has internal electronic components that convert the DC to AC to turn the motor. The only control possible is on and off. Use a relay or a suitable MOSFET.

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3

Oh. Could I control the speed with a relay and a mosfet? I also got some LA5512-TO-126 here, if that can be used.

Edit: you said motor speed control is not possible at all with a brushless motor?

4

IF the whole purpose of your speed control is to control the water pressure, then you will fail because a pump is designed to run at a single speed. If you want to control water pressure, then work on controlling that with a valve.

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5

With a fixed speed pump, the safe way to control flow is with a diversion valve on the output.

The valve simply diverts water back to the source, reducing the output flow from maximum.

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6

Thank you, then valve it is.

7

Why do you need to control flow rate?