Quote:
Originally Posted by AdamHeard
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.
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Less than 1 oz might be a bit tough...
here are some that I found that are less than 2 oz. These range from 8 amps to 90 amps.
While it isn't shown on their website, I know
SeaBotix just came out with a new BLDC motor controller that might meet your weight requirements and is 80amp tolerant. It also has an extremely low profile. You can fully control the motor controller (speed, current, winding direction, etc) via I2C, RS232 and maybe even RS485. It isn't something they usually sell stand alone, but they might be open to the idea, especially if this is school related.