This is an Arduino based RC transmitter TX. I want to design a RC transmitter (soft and hardware) that is simple to build, and use arduino board wich I am familler with, and it should supoort ELRS.

The 16-channel 12-bit PWM/Servo Driver, PCA9685, is an ideal module for precise control of multiple PWM outputs that are commonly used to control servos, LEDs, and other devices in applications such ...