Quote:
Originally Posted by Rod
Thanks Tim for the explanation.
Thanks MrB for stepper suggestions. Unfortunately , the Oceancontrols steppers are all bipolar. Mel's system is designed for unipolar motors.
Regards,
Rod.
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Rod,
It is possible to use bipolar motors with Mel's software.
Of course, the driver electronics must be differently designed, it should have "bridge drivers" instead of single transistor switch for each motor terminal.
The bridge stage uses 4 transistors per coil, so basically you need twice as many transistors (plus two small ones as drivers/inverters, so this is 6 per coil, 12 per motor). This is not a problem to build, though.
However, I would not worry too much about all this.
Because there is always something better behind the corner.. .. and if you chase the perfection, you will always try to improve but never really use and enjoy what you already have
EDIT:
I just had a look at data sheets (Oceancontrols steppers). 6-leads motor is unipolar, so you do not have to modify Mel's driver box.