Old 01-23-2021, 07:54 PM
  #5  
ron_van_sommeren
homo ludens modelisticus
 
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Join Date: Jul 2005
Location: near Nijmegen, Nederland
Posts: 1,343
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Originally Posted by jb48 View Post
... all I get from the esc is a rapid ascending tones, not followed by the confirming bip bip, but only by single short bip about every second ...
The controller is trying to tell you something in beep/morse code, using the motor as a poor loudspeaker.
Look up or google (make/type manual/instructions beep code) the code, several codes.

In case you have a Futaba transmitter, Futaba's need to have their throttle channel reversed.

The controller is using the motor as a poor and cheap loudspeaker, no buzzer/speaker needed. In a loudspeaker a coil moves in/because of changes in magnetic field, same for motor. In a motor magnets move because of changes in magnetic field.
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