If you are done with the University and are looking for a new use for your calculator TI 83 ++, then look no further than this project. Cemetech wire guys are playing Floppy Drive music using a TI-calculator 83 ++. To make your own, you will need to download mobileTunes and build the small circuit.
"I was hoping inspired by other projects as the Imperial Star Wars March played on two drives and Bach Toccata and Fugue in d minor, BWV 565 on four floppy disk drives, to implement this concept on a much more limited control device: a TI-83 ++ graphical calculator.". Microcontrollers, such as those used in the above projects have tens of pin GPIO interface with external equipment, the TI-83 ++ calculator graphic has only two lines of I/O, bi-directional two. I did a little research on the disk drives, control and discovered that if I held the pin 16 (allow engine) and PIN 12 (Select drive) of the bass of floppy drive, I have only pulse management in and pins step (18 and 20) to control the engine head not to read/write to the floppy disk drive. »
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