built esc brushless sensorless for car,boat ? - Page 2 - RC Groups
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Oct 23, 2012, 10:08 PM
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Originally Posted by fantasy1988
maybe this thread does not get the attention of people because it might not be feasible, and too difficult
I am not sure what you are saying. I referenced the MC33033 but the MC33035 would be a better part as it has F/R and brake. You posted several circuits which I cannot read but they look like just about everything you would need to make a sensored ESC. You do not need a micro as plain logic and analog circuits will do everything needed.

There are many other parts that do motor control so there may be better parts. Many CDROMs and disk drives use sensored BLDC motors so these parts are as common as dirt. However most are low power.

With the addition of the MC33039 it becomes a closed loop system or in our terms, 'governer mode'.
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Oct 24, 2012, 10:03 AM
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thanks mjsas
Oct 25, 2012, 07:23 PM
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helllo all
I will try to use the plane's motor for car 1/10, to see how it works

esc 35a (handmade with atmega8 )

baterry 3 cell lipo

tx rx,2 ch 27mhz
Last edited by fantasy1988; May 05, 2013 at 10:27 PM.
Oct 25, 2012, 10:46 PM
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I checked and the results showed that the startup torque is too weak
Oct 26, 2012, 10:12 PM
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I would like to suspend this thread until I successfully built the circuit, because it seems to have received little attention of people
thank you all
Oct 26, 2012, 11:10 PM
For car use (unlike planes - and boats), you want a sensored motor to ensure you have sufficient startup torque.
Feb 07, 2013, 07:27 AM
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I am building my esc brushless for car.
it is version sensorless . it works well mode forward and reverse
. but still difficult braking mode
software of simonk, I will post here, hope someone can change program so that it can complete

thank a lot
Last edited by fantasy1988; Feb 14, 2013 at 01:09 AM.
Feb 09, 2013, 03:55 AM
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