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Topic: Should I use Transistors? (Read 374 times) previous topic - next topic

avinashbeepath

Hello to all,

This is my first post and I've been doing alot of my research online for this one but can't seem to get a solid grasp of solving this one as I'm new to electronics!!

My question is: I've gotten a 8.4V DC stepper motor from a friend who I think got it from a printer. Seeing that the Arduino pushes 5V max, how do I up the Volts to be able to run the motor? I came across transistors but then the schematics of putting it together is giving me some serious trouble. Am I in the right direction in the first place??? Or should I be looking in a completely different direction? Can anyone point me in the direction of what the schematic would look like?

Any assistance would be deeply appreciated. Thanks a mil in advance for any responses.
Thanks

patduino

Nope, stepper motors require more complex control than just a single transistor.  You will also need a separate power supply for the motor.

1) google "transistor as a switch" and "PWM" to learn about these fundamental concepts, and

2) google "stepper motor" to learn about them.  May be too much for a first project, though.

Pat
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johnwasser

Yes, a transistor is likely to work for a DC motor (two wires, right?).  Google for 'Arduino transistor' to see examples.
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avinashbeepath

Well I've done the beginner topics with the starter kit but Patduino thanks for your recommendation...transistor as a switch. Read some books on beginning with Arduino and did some start up projects but I do think this maybe a little over the edge for me, wanted a bit more of a challenge.
Thanks for the responses.

patduino

First you'll need to determine what type of motor it is.

Stepper motors are very different than regular ole' DC motors.

How many wires?
There are 10 types of people in the world, those that understand binary, and those that don't.

avinashbeepath

Thanks for your response.

It is 4 wires.

patduino

If you google "4 wire stepper motor" you'll get a lot of information about them.  Hopefully, you'll be able to tell how to control them from the many examples.
There are 10 types of people in the world, those that understand binary, and those that don't.

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