Quote:
Originally Posted by Jon Jack
Not entirely true. All a BLDC motor controller does is power the three phases in a particular order. For example, A-B-C in one direction or C-B-A in the opposite. What would you need a relay for? You don't need to reverse polarity to reverse direction.
|
All the brushless controllers I have been able to find (besides ones that are HUGE. several ounces and several hundred amps) only spin the motor one way. I simply can't find a dual direction brushless controller that is even remotely small enough ( < 1 oz and about 25-30 amp).
I was thinking I could make a singled irection into a dual direction by having a relay switch the motor leads. I'd then need a microcontroller to determine if the pwm is above or below neutral, and switch accordingly.
However, if you can point me to a dual direction brushless controller in a small size, I would be extremely happy.
Once this competition is over, we should donate all of these Poof balls to daycares, elementary schools, neighbors; all the little kids. It would make us look good like, "Here's our Toys for Toddlers gift from us upstanding citizens. And we build robots." - atomikitten [more] 
13-11-2007, 03:02
Similar Threads
Threaded Mode