I have an existing RC circuit for a toy truck. Obviously it already has its own mC to receive the antenna signal and output a PWM signal to a motor driver IC.
I want to be able to ALSO control this motor driver IC from an ESP8266 but I would like to do so in a non-invasive/non-permanent manner, ie I would want to be able to simply remove my ESP8266 at some time and the RC truck will still be functional as if it was stock.
I would like to only introduce/add an IC that would allow me to choose between which PWM signal to use to drive the motor driver IC.
I would like that if the ESP8266 is not present it use the existing mC PWM signal, ie use the existing mC signal by default and if the ESP8266 is present I can choose from the ESP8266 which PWM signal to send to the motor driver IC.
thanks in advance for your help!