Here you go - from the Haynes Manual:
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What does it means?
Eventually I want to control that motor with only two wires like in regular DC motor / Solenoid Valve. Will that be possible?
Well, it turns out not to be the case - one of your 4 wires is the 0V connection!
Of course it will.
It has 2 windings to give 2 speeds without needing any electronics for control.
So you just choose one of those windings, and control it as for any other brushed DC motor.
You could even switch between the windings to be like a "high gear" and "low gear" ...
I could guess the black wire is the 0V ?
So I could take for example the yellow wire and the black wire and to refer them as it was regular DC motor with two wires?
If I will change between those wires, meaning one time the yellow wire of my motor will be connected to my +12V PSU and the black wire to my PSU GND - the motor will rotate in one direction and if I will connect the black wire of the motor to my +12V PSU and the yellow wire to the GND of my PSU- the motor will rotate the other direction?
Don't guess - look at the diagram!
Pretty sure I've come across cars where black is used for live ...
These motors are not designed to go in the "wrong" direction; eg, the self-park mechanism might get in the way ...
So if im reading it right - black wire is my gnd and light green wire is my +12V , right?
Yes - that is the symbol for ground:
You have the choice of Light-Green and Yellow - depending on whether you want the motor in "fast" or "slow" mode
Assuming wiring my motor this way were light green wire is tie to Vcc (+12V) and black wire is tie to Mosfet Drain (I marked them in light green and black)
With this configuration - Could I control the speed of the motor using arduino pwm? when pwm is 0 motor will be off and pwm +5V motor will be at highest speed were in between the motor will spin from very slow to medium to fastest at 5V pwm
Is the above scenario possible?
if so - is my schematic fine for the mission?
Do I need to add 5A or 10A diode across the motor?
Not if it's wound as a so-called universal motor:
Thanks, What about my schematics for controlling motor speed from off to full speed with all the range in the middle ? will this suppose to work?
Note that you're not actually controlling the motor speed - there is no feedback - you're just reducing the power to the motor.
Yes, with less power, the motor will tend to turn more slowly; but it's not a controlled speed - when the load on the motor varies, the speed will change.
This is the way its done with all DC motors and arduino, isn't it? is there other way to controll this motor speed using an arduino?
Yes, it is a common misuse.
So long as you understand.
How can I know how much power/Amps the motor is drawing?
Do I must add a diode across motor?
You will just have to measure it. And remember to measure under various load conditions - including stalled...
That's what you get with using scrap/salvaged parts!
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