arduino keyboard input
The same interface nowadays seems like everything uses USB. It would be nice to use some of these devices with my electronics projects. The chip on my Arduino board could be used to output USB data. It can act as a USB device, but to receive USB data. It needs to act as a USB host, which is a bit more complex. Thankfully, someone went along and built a shield attachment for Arduino that incorporates a chip capable of handling USB host duties. Oleg from circuits at home produced the USB host shield and provided some examples on his site for using it with mice keyboard game controllers. I wanted to use it with a USB midi keyboard. Unfortunately, there are no examples for that. So I’ll need to do a bit of hacking. Learning about the USB data protocol can be a little confusing, even after reading or at least thoroughly skimming the over 600 page official spec. In a nutshell, data is transferred between the host and the device through a sort of virtual port called an endpoint. Most devices use multiple endpoints of different types, each one identified by a number and the direction that data flows through it. The host manages all of these endpoints along with a bunch of other details. After a little experimenting, I figured out that USB MIDI devices send out data in a similar way to the PlayStation controller used in one of the USB host shields example sketches. So I was able to repurpose a lot of that code to work with my keyboard to get a better idea of what it was sending out.
I program the Arduino to repeat incoming values. Back to my computer, the output was more or less regular mini messages. Something I’m familiar with the first byte tells me. This is a note on message. The second byte tells me, which note was pressed and the third one is the notes velocity. Now I can send these values out over a serial port and it’ll be compatible with any standard mini device such as my little MIDI Foxen, which is also based around Arduino Music. So I’ve essentially built my own USB MIDI to old school MIDI converter, which is cool.
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About The Author
high arrest rate areas…need small business that tax the fudge out of groceries…so write unknown spoken only law” bring your kids with you to do vice cry and cops will always let you go or IGNORE YOU COMPLETELY…
Hello from Russia and fanks.
Such a useful project. I believe with same hardware a full Midi In&Out is possible right?
this guy could be a pedo.
And you could be a real musician.
beef hahaha
matt gregory
shots firedddd
matt gregory
the savage
wow… tough guy behind your keyboard
Nice appetizer
My Casio keyboard only has a USB midi output. Let’s see if this can turn it into a general midi device. But can the Arduino read back midi data and send back through usb? So other keyboards can send midi data to Casio? Can it work both ways?
I’m up to nearly 38,000 lines of code in my project which is still only equal to 45 seconds in real time. My project will run for 22 minutes so I have about 62 million more lines to go, no actually I’m stopping at 2 minutes 22 seconds and then the telemetry should upload at 4x gig pack 11 before the reset starts or I hope so by then at least that’s what it’s all based on, so if the cycle isn’t dragging more than .025 sec then it ought to self regulate at that point.
I love everything about this video! Thank you Collin!
Hello,
if I renumere you, escusez me to be as direct, but I wanted to know if you can make me a DC usb for a roland Mc 307, control by L AKAI Midimix” https://www.woodbrass.com/m.a.o-controleurs-akai-midimix-p205441.html?af=2401&gclid=Cj0KCQjw0K7NBRC7ARIsAEaqLRGNpITctjXvrUonZ0_xfc6ITHJ56WOiWyI6T1IEixJhTdeRgldWQ5EaAoHnEALw_wcB ” feeling unable to do it, plus I am unfortunately not anglofone … Thank you for your reply 🙂
Should it be the noon vox? or L’arduino and the south sufi?
coolio
I love Make.
Buen desarrollo de proyectos arduino
под Пушкина косишь чтоль?
Is that Jermaine from Flight of the Conchords?
Bit complicated. Use an Arduino with a 32U4 processor (Pro for eg) and the MIDIUSB library available on Github. Easy Peasy!
This will not work if you want to use a MIDI controller to your Pro micro since both devices are USB slaves, this is why Collin learned about USB hosts. But you are still right about using the Pro micro with a PC because the PC acts as the USB host. Microcontrollers will never be powerful enough to act as a USB host.
options endless 🙂
http://blog.makezine.com/archive/2010/12/usbhacking.html
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The site you were looking for couldn’t be found.
Literally, what exactly does the word ” hack” mean in this context? Does it mean: re-purpose? Change? Or?