Controlar 4 Servos con dos Joystics

International Español Software
2

Porque los defines asi

int horzPin = 2; // Analog input for the joystick horizontal axis
int vertPin = 3; // Analog input for the joystick vertical axis
int horz1Pin = 0; // Analog input for the joystick horizontal axis
int vert1Pin = 1; // Analog input for the joystick vertical axis

debe ser asi

int horzPin = A2; // Analog input for the joystick horizontal axis
int vertPin = A3; // Analog input for the joystick vertical axis
int horz1Pin = A0; // Analog input for the joystick horizontal axis
int vert1Pin = A1; // Analog input for the joystick vertical axis