Help! Esc beeping rapidly when throttle and has only one beep at startup.

[Yash0103]

i recently purchased simonk 30amp esc. As I was new to rc i didn't knew I have to calibrate it, and directly used joystick code with Arduino.

Initially the motor worked fine, but while fixing the calibration, I think I i did some mistake in code, it stopped working completely. Now when I throttle, the motor doesn't rotate and vibrates and esc keeps beeping rapidly, so am not able to calibrate it and or enter programming mode to reset the esc.

Also when connecting 3s battery to esc earlier there were 3 beeps at startup, but now only one.
Video -

 

[Merv]

...Now when I throttle, the motor doesn't rotate and vibrates ...

When a motor jitters, it usually indicates one of the three motor windings is not getting power. It could be a bad solder joint, a broken wire, some kind of short or a bad ESC. The first thing to try is, gently tug on each of the 3 wires to see if you have a bad solder joint. Tug on the ESC, motor & bullet connectors. If there is a bad joint the wire will come off very easily, it's held only by the heat shrink.

 

[Houndpup Rc]

i recently purchased simonk 30amp esc. As I was new to rc i didn't knew I have to calibrate it, and directly used joystick code with Arduino.

Initially the motor worked fine, but while fixing the calibration, I think I i did some mistake in code, it stopped working completely. Now when I throttle, the motor doesn't rotate and vibrates and esc keeps beeping rapidly, so am not able to calibrate it and or enter programming mode to reset the esc.

Also when connecting 3s battery to esc earlier there were 3 beeps at startup, but now only one.
Video -

Have you tried holding the throttle at 100% when you plugged it in, and when it beeps lowering it down to 0%?