Motor pulses when plugged into ESC and receiver

Bobieo

New member
I recently bought parts for an RC plane (I have little to no clue what I'm doing) and when I plugged everything in the motor would pulse when connected to the ESC. It would then pulse at a different frequency when connected to the receiver. Any idea on why that would happen?
 

Foamforce

Elite member
I recently bought parts for an RC plane (I have little to no clue what I'm doing) and when I plugged everything in the motor would pulse when connected to the ESC. It would then pulse at a different frequency when connected to the receiver. Any idea on why that would happen?
ESCs “buzz” the motor to use it as a beeper. They use it to report their status. If it’s not plugged into a receiver, it’s probably indicating that it doesn’t have a signal. If it’s plugged into the receiver, it’s either the “ok” beep, or it could be the “throttle engaged” warning if your throttle isn’t all the way down. The specific beep codes should be listed in the manual.