but serialprint not need to write the messages on the display?
I can not understand how I should set up the command
value = int(128 + 127 * sin(2 * PI / periodo * times));
Pump1PWM = 255 - value;
Pump2PWM = 0;
Pump1PWM = 0;
Pump2PWM = 255 - value;
int interval = 35; // In seconds