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Using 7 ultrasonic SR04 to APM?

Started Aug 2, 2017 0 Replies

Dear my friends Is it possible to connecting 7 SR04 to APM2.8? if it's possible please let me know how can I do that? thanks for your answersContinue

Tags: quadrotor, controller, flight, apm, quadcopter

Using only one Hall sensor for 3 phase BLDC

Started Aug 1, 2017 0 Replies

dear my friendsIs it possible to use only one Hall sensor to determine the position of rotor in BLDC? I thought that maybe it's possible to count the magnets by only one Hall sensor and switching the…Continue

Tags: quadcopter

Stop one motor faster than other motor in quadcopter

Started this discussion. Last reply by Andre K. Jul 21, 2017. 1 Reply

dear my friendsI have a quadcopter and when I disarm motors one of them stop faster than others. I think there is a mechanical problem with it. Am I right? please help me. I truely appreciate…Continue

Tags: problem, motor

Why APM do not save my setting?

Started Jun 22, 2017 0 Replies

Hi my friendsI have a quadcopter with APM.System works without problem, arm and disarm perfectly.Calibration OK, ENGINES TURN.Connect and disconnect battery and ESC sounds uncalibrated, not save…Continue


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I am a mechanical engineer
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