Brushless electric motors

Author	Message
larny Guru Joined: 31/10/2011 Location: Australia Posts: 349	Posted: 12:02am 15 Sep 2020         NPHighview said   I don't know if you need to stick with your exact motor, but you might consider using a continuous rotation hobby servo (see https://www.pololu.com/category/143/continuous-rotation-servos), which you'd drive with a PWM output from the cmm2, Arduino, etc.   A duty cycle below 50% makes the servo rotate in one direction (from very slow to maximum speed, depending on the actual PWM value).  A duty cycle above 50% makes the servo rotate in the other direction (again, from very slow to maximum speed). Another advantage of the hobby servo alternative is the wide array of hardware (mounting brackets, wheels, levers, cams, etc.) already available for them, off the shelf, and also tons and tons of Thingiverse 3D printable or laser-cuttable stuff for them as well. My son and I built a 2-lb. class battlebot ("Critter Crunch" competitions in the Midwest) using one continuous rotation servo for each of 4 wheels, driven by two SuperRooster PWM-controlled motor drivers powered by two small sealed lead-acid batteries (to provide +&- 12V).  This was extremely powerful, and we went undefeated until he got bored with it. Thanks NPHighview.  I'll investigate the types of motor you mentioned.  I'll do search for them in Australia.   It makes it easier now I have a starting point.  I'm not familiar with robots, etc.