![]() ![]() The heart of the robot is an Arduino Uno. It reads incoming note events (and optionally cc events for the finger setup) and sends corresponding messages (in a dedicated message format) over the USB-to-serial connection to the robot. ![]() This is how I drive the robot in my live setup: On the Linux host side, there is a C program running, which accepts incoming ALSA MIDI sequencer connections. Using the QJackctrl patchbay, JACK and ALSA coexist peacefully. Jack also does MIDI, but the API is even uglier than the ALSA one. In my Linux musical setup, I am using both JACK (mostly for audio) and ALSA (only for MIDI). The one thing I regret not having implemented during my performance was MIDI panic (cc #123 set to zero should be interpreted as "all notes off"), since I ended the first song with one finger stuck in the downward position. The Arduino MIDI Library is very versatile and you can make many different projects with it.This project is more or less finished, at least I have a stable version that I am satisfied with and that I already used in a live setup on stage. If all goes correctly, your app should pick up the Arduino as a MIDI instrument and it will start playing C over and over again. ![]() Now it is back to "MIDI mode." Now plug the Arduino back into your computer and open your favorite midi app (Something like Garage Band). Next unplug the Arduino and remove the jumper on the ICSP header. ndNoteOn(C3, 120, 1) // Send note C3 on with a velocity of 120 and on channel 1 MIDI.begin(MIDI_CHANNEL_OMNI) // Begin MIDI and listen to all channels MIDI_CREATE_DEFAULT_INSTANCE() // Create an instance of the midi library ![]() We will upload a simple code that will play a note on and off. Plug it back into your computer and it should now show up as an Arduino. When you plug the Arduino (once the firmware has been changed) you should get a message like "We're setting up the device 'Moco/LUFA'." With the Arduino as a MIDI device, we can't upload code to it with the ArduinoĬonnect a wire/jumper between pins 4 and 6 on the ICSP header as shown below:Īdding the jumper will set the Arduino back to "normal mode" (So we can upload code to it). Just skip the part "Download updated firmware".Īlso, be sure to flash dualMoco.hex to the board! NOTE: Only the Arduino Uno and the Arduino Mega have a 8u2 (or 16u2)įollowing the instructions here, flash dualMoco.hex to the Arduino. This is helpful because you can have a MIDI keyboard that is connected to a computer with a MIDI software and the type of instrument can be customized.įor more info on what were about to do (Please read):īefore we start, make sure that you have Arduino IDE and MIDI Keyboard (Or any other MIDI app) installed and ready to go. The benefit of MIDI is that the commands only send the pitch and the velocity, not the type of sound or the volume. MIDI commands are sent over a DIN cable or, more popularly, USB. The most basic command, Note On, sends the name of the note (pitch), the velocity (how hard the note was played), and the channel. MIDI ( M usical I nstrument D igital I nterface) is a protocol that uses a series of commands to send musical notes. Last year, while on an all-night-long adventure with my church, one of my over-caffeinated friends came over to me and told me that we needed to make a "really awesome musical instrument with lasers!" I'll put up that project when I'm done but for now, here's how I found out (after much googling) about how to use the Arduino as a MIDI device. ![]()
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