calculator music

This is a demo of a project I built so that I could use my HP 48 to play a MIDI keyboard. The calculator is running a program that sends data to a Parallax Stamp Basic microcontroller over the built-in serial port whenever I press a button. The microcontroller is running software that converts the message from the calculator into a MIDI noteon or noteoff message that is then sent to the keyboard. This is a response to a createdigitalmusic.com poll in which a (small) number of users said they wanted the site to cover more calculator music.

Category:

Science & Technology

Tags:

• calculator
• music
• hp48
• midi

[ajturley]

@orangetide, I'm sure that there's a way to get the serial port to send data at 31250 bps. My understanding from the documentation is that there are only a few supported rates. If you have information to the contrary, please let me know, because I agree, doing this without the microcontroller would be much more interesting.

[youknowwho52]

Awsome... Love to get my hands on the script you used... or did you do something else? Watever... Love to get my hands on whatever you used to make this so I can duplicate. Love stuff like this.

[ajturley]

@youknowwho52 the script and other information can be found

[keoni29]

Make it play sequences D:

[orangetide]

a simple passive circuit to connect the Tx of your HP48 to MIDI-IN is doable, then you simply operate the port at 31250 bps. and eliminate the costly basic stamp board.

[JayDmusicproductions]

@misspudding im pretty sure what he is doing is a bit more advanced than that

[ignolan]

this is what happens when u don't get laid

[ikalonery]

what a waste of time ... can`t get it

[4dyceboi]

wow, yenno this is so stupid, i think i just pooped a lil

[misspudding]

Oh this brings back memories of trying to program my HP48G to say "hello world".

Way cool!