Not working

[sreekanthmp]

I did calibrate all ESC. After that, I did all connections and uploaded the code..but nothing happens.
Sometimes the motor rotates(not controllable).

[f41ardu]

Check minPulse and maxPulse
a) your RC ontroller
b) then settings in the code
This examples works well in my test suite:

https://wokwi.com/arduino/projects/319034627596485204
#define minPulse 450
#define maxPulse 2600

It seems to be a good idea to use a much simpler code for testing a single ESC first.
Check min/maxPulse lenght and the configuratione required by your ESC.
I'm restructering the code cause I'll build a nano copter using brushed motors. So still much work ahead for me.