You have two issues:Firstly the transmitter is set to 250000 baud (a non-standard rate) while the receiver is set to 9600 baud. Both need to be set to the same rate.Secondly the transmitter is constantly sending data and the receiver is constantly reading it, there is no way to ensure the two are synchronized. So your receive buffer could well end up being the end of one set of data and then the start of the next e.g. If all you are sending is the same loop over and over this doesn't matter but for real world data it's an issue. If you have a value which you know will never be in your data (e.g. 0 or 0xff) then you can use that as a start of data marker, if not then things get a little more tricky.
Arduino Serial Write Byte Array
// Example by Tom Igoeimport processing.serial.;// The serial port:Serial myPort;// List all the available serial ports:printArray(Serial.list);// Open the port you are using at the rate you want:myPort = new Serial(this, Serial.list0, 9600);// Send a capital 'A' out the serial portmyPort.write(65);DescriptionWrites bytes, chars, ints, bytes, Strings to the serial portSyntaxserial.write( src)ParametersserialSerial: any variable of type Serialsrcbyte: data to writesrcint: data to writesrcString: data to writeReturnsvoidUpdated on December 6, 2019 03:55:22pm EST.