have added a piezo buzzer on the left. It provides a beep on start up
and a beep whenever a key is pressed which does help with using the
Also, the final code archive should now be in the links on the right.
is an archive of the entire project. If anyone wants to rebuild this,
note that the Arduino code is included rather than linked - I couldn't
figure out how to link 'C' code not part of the Arduino project in (I'm
not even sure if it is possible) so this will require some tweaking.