I first try to power them with the arduino mega 2560 pin but it was not enough.
Secondly, contrary to the datasheet which recommend to use 5V i power them with a 9V battery. It's work perhaps the battery had emptied out quickly and the motors were heating.
Thirdly , I power the stepper moteur with a 5V - 1,5 A usb cable but it doesnt work? I think it's because of a too low intensity.
I'v read that intensity increase the torque and tension increase the speed. Considering that i can't increase the tension because of the heating i've to manage the intensity.
My goal is too find a sustainable way to power this motor without heating and sufficiently powerfull.
You will find attached the two datasheet.
Thank you for you answer and sorry for my english which is imperfect.
i use an old wall wart supply and step down converter for powering motors and power an arduino thru usb on the bench during development. I have used a 12V wall wart for a final project also connected to the arduino relying on its internal regulator
Dumadri:
Secondly, contrary to the datasheet which recommend to use 5V i power them with a 9V battery.
That seems very silly. You are lucky you did not destroy the motors.
Thirdly , I power the stepper moteur with a 5V - 1,5 A usb cable but it doesnt work? I think it's because of a too low intensity.
You don't say where the cable is getting its power from?
I would expect the sort of adapter that is used to provide 5v USB power from a car's 12v power should work fine. I got some for £1 each a few days ago but they only provide 1 amp so you would probably need one for each motor. Make sure to connect the GND from the external 5v power to the Arduino's GND.
gcjr:
i use an old wall wart supply and step down converter for powering motors and power an arduino thru usb on the bench during development. I have used a 12V wall wart for a final project also connected to the arduino relying on its internal regulator
Thanks you gcjr for your answer.
What I understand is that i can connect my Arduino to a 12v and it will release enough power to run my two steppers ?
I have a 3D printer with an electric transformer from 220v to 12v 5A DC, do you think i can power my arduino with that without burning it ?
Robin2:
That seems very silly. You are lucky you did not destroy the motors.
You don't say where the cable is getting its power from?
I would expect the sort of adapter that is used to provide 5v USB power from a car's 12v power should work fine. I got some for £1 each a few days ago but they only provide 1 amp so you would probably need one for each motor. Make sure to connect the GND from the external 5v power to the Arduino's GND.
...R
Thank you Robin 2.
Yes it's bit silly but i desperate to find a solution.
The power is coming from a classic USB adapter for cellphone which technically provide a 5v 1.55A. Perhaps when i mesure the intensity i have a first a value of 15mA and now 5mA.
I think the problem is that i dont know how much ampere need the motor to run well and how much I can give him.
I have found several chargeur with 5V and 1 / 2 /4 /5 or 10 A, do you think one of them could be good ?
I have also found the same motor in 12V and the datasheet provide a value of 25 mA.
Dumadri:
What I understand is that i can connect my Arduino to a 12v and it will release enough power to run my two steppers ?
the arduino board has a regulator that allows up to a 12V supply to be used for power. That regulator outputs 5V for use on the Arduino board and some lower power devices.
you should use the external 12V supply as the power source for your motor. (see this example)
Dumadri:
I 'm not sure of the fritzing wiring diagram I've made based on your explanation.
Sorry to bring bad news, but Fritzing diagrams are little use - they are too easy to misunderstand. Please just make a simple pencil drawing with the connections clearly labelled and post a photo of the drawing.
You said earlier that you have 5v motors so why are you using a 12v power supply - do you like seeing the smoke escape?
