printf_P(PSTR("mode = %x\r\n"), ballboard.mode);
printf_P(PSTR("status = %x\r\n"), ballboard.status);
printf_P(PSTR("ball_count = %d\r\n"), ballboard.ball_count);
printf_P(PSTR("mode = %x\r\n"), ballboard.mode);
printf_P(PSTR("status = %x\r\n"), ballboard.status);
printf_P(PSTR("ball_count = %d\r\n"), ballboard.ball_count);