This widget was made for those who play music with the MIDI format and that need to send System Exclusive messages to synths and keyboards; if you don't want to loose time to calculate the checksum byte necessary for some electronic instruments, then you need this widget.
You insert the data necessary to build the message and the widget calculates the checksum while completing the missing parts. It gives the result in hex format, ready to be copied and pasted in your MIDI application.
You can also choose to start/end with F0..F7 bytes of a standard System Exclusive, the option being available on the back of the widget.
At the moment, the widget treats the Roland SysEx. You some of you needs to cover other brands or other kinds of message, please leave us a note in the Contact section. On the back you can find also a quick help.
The numbers you supply are always intended as hexadecimal format, better if written grouped in two bytes, as reported in the following picture.
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Universal Binary 
