Linux disabling blank screen

$ xset s off
$ xset -dpms
$ xset s noblank

References :
How to Disable the Blank Screen on Raspberry Pi (Raspbian) | HackLab

Arduino LowPower library Serial print 亂碼

Serial.flush();
LowPower.powerDown(SLEEP_1S, ADC_OFF, BOD_OFF);

References :
Low Power library messing up serial text