I am trying to control a mini pump motor and all the tutorials I have seen mention using a relay but I do not have one. I do however, have an l298n motor driver, and if I'm not mistaken the pump motor operates similarly to a dc motor, so I thought I might be able to run it from the motor driver, like I would with a 6v dc motor. I would use the motor driver with an Arduino board btw. Would that work?
Yes, provided the motor current is within the 298's current capacity, which if my memory serves is 2A, but check the 298 datasheet to be sure.
The 298 drops 2V at a minimum, up to almost 5V at higher current, check the datasheet for details.
So you need to put in more volts than you might think; it's a cr@p driver for low voltage loads.
Since you do not want to reverse it simply use a MOSFET to drive it. You will get about 2.4 volts more at the motor terminals and it will run cool if properly designed. Just be sure the grounds are connected.
What is the pump's current or wattage requirement?
"I would use the motor driver with an Arduino board btw".
Which Arduino board?
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