One of the things that would have really helped would be to have more geared stepper motors to get higher torque. I had to build my own gear boxes to accommodate the stepper motors (size 25 and 35 NEMA) , which was very difficult. I am still looking for some ready made geared stepper motors, which I can easily mount on my application.
~Jude P, Research & Development, Bangalore, India
Mechanically fit in the existing enclosure. Constant speed operation but perhaps 5% speed ripple may be acceptable. Do not know what speed ripple is acceptable in this pill counting apparatus.
~Haresh P, Engineering Consultant, Lake Forest, CA
Maybe a reverse polarity stepper, where the current is turned off to step the motor, so it holds torque without current. Where the coils actually nullify a magnet's pull.
~Mathew Todd, Student, Marian, AUSTRALIA
Easily adaptable to couple to any pump head, ability to buy coupling shafts (flexible) off the shelf, higher sensitivity for lower flows.
~Victoria G, Research & Development, Cardiff, UK
Degree stepper motor with lots of mechanical parts in order to put the parts in many different applications.
~Diego Pena, Engineer, Burbank, CA
Very high speed (pulse rate)
low cost no matter what its current and volt are
~Ragy S, Student, Alexandria, Egypt
High torque motors with high RPM's without sacrificing precision too much.
~Steven G, Student, Perth, Australia
Hiigher torque, built in drivers and power supply connectors
~Shane B, Research & Development, Williams Lake, Canada
Lighter weight with high torque
~Hemraj C, Design Engineer, Indore, India
High torque low resonance
~Alvaro I., Design Engineer, Bogota, Colombia
~Juan S, Student, Buenos Aires, Argentina