DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate - View Single Post - HP48 Graphing Calculator as MIDI Keyboard

**mynaflzak** · 11-19-2008, 12:02 AM

It’s hard to write the first line of this, because in this case any reference to Kraftwerk’s “Pocket Calculator” is wildly redundant. This is a calculator. He is the operator. This is a real, working HP48 graphing calculator playing MIDI events. You can go, like, graph stuff with it afterwards, do some Calculus. And we can thank a few people responding in a [You cannot see the link as you're not logged in. Click here to login or here to register.] on this site for making it happen.

Andrew Turley, who has previously built a [You cannot see the link as you're not logged in. Click here to login or here to register.] (thus making his way through arcane academic equipment as MIDI controllers), describes the project:

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.
Brilliant work, Andrew. And I have to say, now that you’ve done it, it’s a pretty practical little object to us as a controller.

Other calculator work, anyone?

11-19-2008, 12:02 AM	#1
mynaflzak Join Date Oct 2005 Posts 558 Senior Member	HP48 Graphing Calculator as MIDI Keyboard It’s hard to write the first line of this, because in this case any reference to Kraftwerk’s “Pocket Calculator” is wildly redundant. This is a calculator. He is the operator. This is a real, working HP48 graphing calculator playing MIDI events. You can go, like, graph stuff with it afterwards, do some Calculus. And we can thank a few people responding in a [You cannot see the link as you're not logged in. Click here to login or here to register.] on this site for making it happen. Andrew Turley, who has previously built a [You cannot see the link as you're not logged in. Click here to login or here to register.] (thus making his way through arcane academic equipment as MIDI controllers), describes the project: 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. Brilliant work, Andrew. And I have to say, now that you’ve done it, it’s a pretty practical little object to us as a controller. Other calculator work, anyone?
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