Hello all,
Could you advise as to compatibility between the Arduino Motor Shield Rev3 link and the following NEMA 23 stepper motor link?
I'm aware that the motor runs at 5.04V and requires 1.4 A (Current/Phase). I think the shield should match this as it operates at 5V-12V and has a max current of 2A, but I just wanted to make sure I wasn't incorrect before I went ahead and ordered them!
Many thanks,
hcaw
High performance bipolar motors need a chopper drive to get them to move quickly - what
is your intended application? For leadscrew CNC machines you'd want a high voltage supply and
chopper driver to get a decent speed out of the thing.
A simple H-bridge drive might only get 100 to 200rpm (at low torque) from this kind of motor.
Thanks for your reply. The application is basically a kind of turn-table device that would be able to rotate loads of a maximum of around 7kg. Speed is really not an issue as the turn-table would be required to move very slowly, probably 0.001rpm. (I'm basically running a wifi test on the device on top of the turn-table, rotating it by 5.4 degrees & repeating till it has been rotated by 360degrees).
I tried using this motor, but it wasn't powerful enough.
I have that motor and it's fairly powerful. I think it could do what you want if you use a gear. Trying to do this sort of stuff without gears might be too tough for most steppers. How about two disks with a belt drive?
Oh dear, I have absolutely no idea about gears - can you buy that sort of thing (gears) off-the-shelf or would I have to think about building it myself?
It was suggested before that I try a "lazy susan" bearing and just make sure I mount the motor in the absolute centre, which I guess could also work.
It doesn't have to complicated. You just need a belt (e.g. Catalog | Designatronics Store | Stock Drive Products/Sterling Instrument) and a couple of disks to wrap it around. Small disk on the motor and big disk on your rotation table. The ratio of the disk diameter is the gear ratio.