Hi every one,
Is there anyone know how to build up a circuit that's going to use the 5V Arduino output to control a 12V DC motor.
by the way I don't want to use the motor shield and the input for that.
Thanks.
The question is not if anyone knows (we do), but the question is what do you want ?
What kind of current is that DC motor ?
Do you want it to be able to rotate the motor in both directions ?
Do you want to control the speed, or just on and off ?
Why don't you want to use the motor shield ?
A clone of the Adafruit Motor Shield is less than 5 dollars:
If you want to use only a relay, you can choose either a transistor or a darlington transistor or a mosfet and add a opto-coupler.
Or you can buy a relay module that can be used with the Arduino.
This picture is the most simple way to use a relay:
http://forum.arduino.cc/index.php?topic=89649.msg672676#msg672676
- Its 12 Vdc , 120 mA.
- I want it to rotate in one direction.
- just on and off
- I don't want to use the motor shield cause its a school project and thats the instruction.
