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| | | #redirect [[DIY_MIDI_controllers#Launchpad_translator]] |
| [[File:padcode.jpg|thumb|550px|right|]] | |
| As a product, this pad {{comment|(Launchpad Mini mk2 - you now probably want at least the mk3)}} is aimed at triggering samples in a DAW.
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| It speaks MIDI, but the note layout is not musical at all.
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| If you want to use it for that {{comment|(note: no velocity; you may want a Pro or X for that - but by then, also compare to things like Push)}}, you want a different layout.
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| As it speaks MIDI, I've previously abused it in other ways, such as triggering a slew of keyboard combos via [https://midikey2key.de/ MidiKey2Key].
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| But you can go further than that.
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| Pictured is an Arduino with a {{search|USB 2.0 Host shield}}.
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| Acting as a translator (USB-midi to the pad, and as of this writing serial MIDI on the other end) lets us create a isometric keyboard layout, and add features we can think of, such as a step sequencer. And control the LEDs.
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| And because USB-MIDI is defined in USB itself, the USB code is not particularly scary.
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| The code is duct tape between:
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| * Arduino MIDI library [http://playground.arduino.cc/Main/MIDILibrary]so that it can easily put out serial MIDI (on 5-pin DIN)
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| * [https://github.com/felis/USB_Host_Shield_2.0 USB Host Shield 2.0 library]
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| * my code also uses the [https://github.com/YuuichiAkagawa/USBH_MIDI USB MIDI library] though this seems to have been merged into the host shield code in current versions.
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| See also:
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| * {{search|launchpad-programmers-reference.pdf}} (note there are differend pdfs for different revisions)
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| [[Category:Audio]] [[Category:Hardware]] [[Category:DIY projects]]
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