Hello
i want to connect a single 3v micro gear motor to arduino uno for my project. I do not need speed control or direction control. I want to control it using bluetooth. So how i should connect the motor to any digital pin?
Thank you
What is the stall current of the motor? The stall current should be listed on the motor data sheet. The motor will draw stall current, briefly, each time that it is started.
You need to know the stall current to, intelligently, choose a driver.
What Arduino are you using? Pins set as outputs can handle a limited amount of current. An Uno (or Nano) can handle 20mA safely, no more. If the motor needs more (very likely) you will need a driver. The type of driver depends on if the motor turns in one direction, only, or must be reversible. Does it need to be reversible?
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Thank you for the reply. I will check the data sheet and will check forum guidelines.
You can connect it to the arduino pins and expect to be purchasing a lot of Arduinos over time. You can use a single logic level avalanche rated N-Channel MOSFET. Besure it is on at about 3.5Vgs or less. Connect the power supply grounds together, the source of the MOSFET to ground, the gate to the Arduino through maybe a 500 Ohm resistor. Connect the drain to the motor and the other motor lead to the motor power supply. Drive the Arduino pin HIGH and the motor should run. Nice part no flyback diode needed it is part of the MOSFET therefore only two items needed. The 500 Ohm resistor could be skipped but I would not recommend it.
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