Searching a way to control two 12v dc motors

Other Hardware General Electronics
1

Hi guys, im new in the field and for my project i need to control two 12v dc motors by my adruino uno.
i need to make the motors spin individually in both directions and stop them. can anyone help me?
Thank you.

2

Start off by reading this:-
http://www.thebox.myzen.co.uk/Workshop/Motors_1.html
and
http://www.thebox.myzen.co.uk/Workshop/Motors_2.html

3

Thank you , because i have to use two power sources one for arduino and one for the motors is it possible to use relays, and how many relays will do the job?

4

Yes the fact you are using two power sources is not an issue, you do however need to connect the grounds together.
You need one relay for on / off and an other for direction, that is for each motor.
You can also use a circuit called a H-bridge to do the same thing like an SN754410, this chip will let you control two motors.

5

Thank you for the details, I went through some studies about connecting the relays to the arduino and found that i have to use transistors and diodes to make safe the arduino, but i couldn’t find schematic or a circuit diagram for connecting the relays to change the polarity, could you tell a way to how to connect the relays to the motors to change their polarity? and what relays i should use?

6

but i couldn’t find schematic or a circuit diagram for connecting the relays to change the polarity

That was in the links I poster with my first reply.

7

Thank you soo much I have started my work with your help, thanks again.