using Serial.print from a library file
i trying debug sketch uses several libraries , use serial.print within library nothing being printed serial monitor. i've tried using serial.begin(9600) within library file , in sketch file , both. need print function within library file? go on. you have 93 posts under belt. put serial.begin(9600); setup() function. i follow serial.println("hello project name"); to verify working. the same applies project whether led, lcd, oled, ... you can remove later if want debug purposes shows how far program has got. david. Arduino Forum > Using Arduino > Programming Questions > using Serial.print from a library file arduino