Posts with «midi input» label

Add visual effects to your MIDI input pad with NeoPixels

Michael Sobolak was inspired by the hardware dedicated to Ableton digital audio software, along with the DIY MIDI Fighter pads that others have constructed, to make his own light-up version. 

His device is cut out of ¼-inch MDF, housing a 4×4 array of main buttons, 18 smaller buttons on the bottom and eight potentiometers, four of which are surrounded by NeoPixel rings.

To handle this massive array of inputs, he turned to the use of multiplexers, creating a spaghetti-like—though functional—wiring arrangement hidden underneath. The pad uses an Arduino Uno to control the NeoPixels, while a separate board is tasked with the MIDI interface. 

You can see Sobolak’s project crank out music in the video below, with LEDs that react to potentiometer input settings.

Arduino Blog 20 Mar 21:42
arduino  featured  midi  midi fighter  midi input  uno  visual effects  

MIDI with Arduino

We have already mentioned the fantastic work of Amanda Ghassei for Instructables in this post.
I would like to report two other very useful documents.

The first is What is MIDI? and explain in detail how MIDI protocol works. The second, even more important is Send and Receive MIDI with Arduino. Please note, regarding the Midi input schematic, the use of  the 6N138 opto-isolator. Some MIDI interface schematics show the 4N25 opto-isolator which is a single transistor type, but the 6N138 shown there produces a much better output signal.

Via:[Instructables]

 

Arduino Blog 10 Sep 08:16
arduino  communication  midi  midi input  midi output  music  opto-isolator  tutorials