Signal Converter from out signal(three phase power) of ESC to pwm signal(+5v) for controlling another ESC.

Please do not apply if you understand the following.

[ Purpose ] :
My Brushless ESC integrated to Flight Controller(FC) is lower current than 20A.
I want to use independent another 40A ESC without any modification of Brushless ESC integrated to Flight Controller.

[ Connection Diagram ]
Brushless 20A ESC integrated to FC -> out signal(three phase power) of ESC
-> Module (need to develop) -> pwm signal(+5v)
-> ESC 40A -> output signal
-> Brushless motor


[ Todo list ] :

1. Schematic(Arduino and so on) and Firmware
for Converting Input Signal to Output Signal

- Input Signal : Output signal(three phase power) of one Drone Brushless ESC
- Output Signal : Control Signal(PWM/+5v) to control another Drone Brushless ESC