Does anyone know where I can get stronger stepper motors than those ones. (preferably same type, bipolar, that way i dont need to change my driver card)
At the moment I can hold them with my fingers, I need at least twice as strong? I tried running them on 32 volt, but that didnt give them any more torque. Or is the problem with driver card?
The stepper is rated at 330mA (pr phase ???) and the easydriver board can deliver 750mA so i guess the motor is the week point.
Have you tried to adjust the small current adjust trimmer pot on the easydriver board so it gives more current ?
It's a good idea to use a amp meter to meassure how much current goes to the motor to make sure you get around the 330mA the motor needs to do it's best.
I tried running them on 32 volt, but that didnt give them any more torque. Or is the problem with driver card?
32v? lol hope that's a typo, the motor board's "max" is 30 volts, while the stepper motors themselves are 12v "max".
Just wanted to point that out, just incase it's not a typo.
But as for the extra torque, I have no experience with stepper motors personally, but you might find some servos that could do the trick for you. (I know they're not for the driver card, but you can control them from a single pin each)
It's supposed to be connected to a PC parallel port, but since all the parallel port is used for is setting some pins high/low, i guess you could do that with Arduino.
Depending on your purpose this package might be over kill.
Well, i need stepper motors with more than 200ozin in torque and some driver to drive them. If you know about a cheaper kit please let me know. I found stepper motors for around 40USD which means 4*40 + shipping is around 200usd. And then I had problems with finding driver cards, found some to around 100usd+ shipping. I figured out that 335+shipping(60usd) might be a good option for 4 stepper motors with 305ozin in torque.
But if u know about a cheaper packet please let me know.
I bought a set of these http://tinyurl.com/yeatkks a while ago for a cnc pcb drill. They come with a power supply and an interface board. The shipping charges are a bit expensive though. The performance is impressive, I managed to get a motor doing 1800 rpm using an arduino.
The fastest stepper motor I have ever used.
Well, already did some research on that, looking for planet gear boxes for rc motors. However i found out that it probably is better to just get some stronger stepper motors. I am trying to make a cnc mill for wood, so hopefully 200 ozin should be strong enough for this purpose
It seems like good value for the money.
Just out of interest, what are you going to drive with the motors? I have mine driving good quality ballscrews and I can turn the current output of the driver boards down to less than 1 amp and still get plenty of linear force to drive my machine.