I am trying to power six stepper motors on an Arduino. Is there any way I can do this with just drivers, the motors and the Arduino?
The motors require a power source. Whether batteries, or a line powered suppy. You can't get away with out power.
The voltage and current required vary with the motor and motor driver types. What motors fo you have? What motor drivers?
Nema 23 stepper motors with I think GRBL drivers. Would I still need batteries with this setup?
You can do it any way you want. All Batteries, All from an lines powered power source, or a mixture of both. You need to supply the correct voltage and current (allow for inrush etc). For example you need 1A 2 12V. You could connect it to a 1A,2A, 100A, as long as the voltage is 12V it will take only the amount of current it needs.
batteries just look kind of junky which is why i was wondering If I could just connect it to the usb that would be plugged into the wall. Could I just use drivers and transiters for this?
You could but you might fry your USB port maybe you won't. Maybe if we knew what the hardware was we could better help you. I am sitting next to a 10Hp motor what size is yours?
im unsure how much Hp it has though i think it requires 2.5V and 2.8 Amps.
Is that at all helpful?
2.5V and 2.8A is going to be per stepper, or perhaps per phase of each stepper. In practice steppers are often driven with higher voltage supplies but with inbuilt "chopper" circuits which limit the current to what the stepper is rated for. You can buy microstepping driver modules, (search for "microstepping driver", see the black units with green screw terminals as an example of what I mean) although they are a bit bulky, where you can supply 12V or 24V power at low current, and it will give higher current lower voltage outputs for the motor itself. I don't know how many steppers you've got, but if 2.5V,2.8A is per stepper then that is 7 watts per stepper. A 12V 2A wall wart, the comon sort of current rating for a 12V DC supply is 24 watts, so accounting for non ideal efficiency in microsteper driver units you MIGHT be able to power 3 steppers from this, if the efficiency is particularly good.
thank you very much!
I coudnt find this.
This just tells you the size of the mounting flange on the motor. It tells you nothing about what sort of voltage and current you need. So you need to be more specific about what sort of Nema 23 motor you have.
Do you 'think' or do you know? Assumptions are a bad idea when developing electronic circuits. You must know what you are doing.
The ratings of steppers are usually per coil. If its really 2.5V and 2.8 Amps, that's 7Watt per coil. 6 steppers, 2 coils per stepper means 84 Watt. I woud add at least 50% for losses and a little headroom. So you need a PSU that can deliver more than 125 Watt.
And those steppers are usually constructed to be used with a current controlling stepper driver. The voltage should be at least 12V. ( So forget about using USB as power source )
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