HomeTutorialsScratch Extension BlocksArduino Extensionserial read byte serial read byte Introduction Serial read byte block is a Robot and a reporter block. It is used to read the commands available at serial monitor one by one (byte by byte). In this case, communication is from computer to evive. This block is only available in Arduino mode. serial read byte Block Type: Reporter Block Extension: Arduino Extension Scratch Mode: Yes Arduino Mode: Yes Example Identifying message and responding: If the message received is ON, Pin 13 LED will turned On, if the message is OFF, Pin 13 LED will turn OFF and any of the specified command is not read, it will return “Wrong Message”.